Which factor least influences the rate of photosynthesis

Answers

Answer 1

Answer:

light intensity

Explanation:


Related Questions

A cat stands on a scale and finds its weight to be 4. 0 kilograms. If the weight exerted by all four of its paws on the scale is. 25 kilograms per square centimeter, what is the area of one of its paws in square centimeters?

Answers

the area of one of the cat's paws is 4 square centimeters.

The weight of the cat is 4.0 kilograms, which is the force exerted on the scale by the cat's body. The weight per unit area on the scale due to the cat's paws is 0.25 kilograms per square centimeter.

Let A be the area of one of the cat's paws in square centimeters. The weight of the cat is supported by all four paws, so the total force exerted by the paws on the scale is:

force = weight = 4.0 kg

The force exerted by one paw is one-fourth of the total force:

force per paw = force / 4 = 4.0 kg / 4 = 1.0 kg

This force is distributed over the area of one paw, so we can write:

pressure = force per paw / A

where pressure is the weight per unit area, which is given as 0.25 kg/cm

Substituting the values and solving for A, we get:

0.25 kg/cm = 1.0 kg / A

A = 1.0 kg / 0.25 kg/cm = 4 cm

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How many moles are there in 5.6x1015 particles of hydrogen peroxide?

Answers

Answer:

0.9299 x [tex]10^-7[/tex] moles of [tex]OH^-[/tex]

Explanation:

[tex]OH^-[/tex]: 5.6 x 10^(15)  (brainly doesn't allow exponents greater than 9)

This number of particles can also be represented as 5.6e15.

'e' in this case means 'times 10 to the n' where n is the number that follows e.

Use stoichiometry to convert between different units.

[tex]\frac{5.6e15 particles}{1 sample} *\frac{1 mole}{6.022 e22 particles}= 0.9299 e -7 moles[/tex]

So in that sample of particles, there are 0.9299 x [tex]10^-7[/tex] moles of [tex]OH^-[/tex].

6) What is the vapor pressure of water at 100°C?​

Answers

Answer: The vapor pressure of pure water at 100°C is 760mm of Hg.

Explanation: We know tat 100 degree Celsius the water will convert into gas phase.  At boiling point the vapor pressure of any liquid is 1 atmosphere and if we boil the water at 100° Celsius  it means 1 atmosphere . So, 1 atmosphere = 760mm of Hg.

how can enzymes speed up chemical reactions? a.they raise the activation energy needed for the reaction. b.they increase the ph of the reaction. c.they increase the amount of substrate in the reaction. d.they lower the activation energy needed for the reaction.

Answers

Enzymes speed up chemical reactions by lowering the activation energy needed for the reaction. The correct option is d.

Enzymes are biological molecules, typically proteins, that act as catalysts for chemical reactions. Catalysts are substances that can speed up a chemical reaction without being consumed in the process.

Enzymes work by lowering the activation energy needed for a chemical reaction to occur. Activation energy is the energy required to break the bonds of the reactants and initiate the chemical reaction. By lowering the activation energy, enzymes make it easier for reactants to come together and form products.

Enzymes achieve this by binding to the reactants, or substrates, and bringing them into close proximity to each other. This allows the substrates to interact more easily and lowers the energy barrier for the reaction to occur. Enzymes also stabilize the transition state of the reaction, further reducing the activation energy needed for the reaction to proceed.

Therefore, the correct answer is d) they lower the activation energy needed for the reaction.

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An aerosol deodorant can has a pressure of 3.00 atm at 25 °C. What is the pressure inside the can at a temperature of 845 °C? This example illustrates why you shouldn’t incinerate aerosol cans.

Answers

The pressure inside the aerosol can at 845°C is 33.8 atm. This is why it is extremely dangerous to incinerate aerosol cans, as they can explode when exposed to high temperatures.

To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas:

(P1 x V1) / T1 = (P2 x V2) / T2

where P1, V1, and T1 are the initial pressure, volume, and temperature of the gas, and P2, V2, and T2 are the final pressure, volume, and temperature.

We are given the following:

Initial pressure P1 = 3.00 atm

Initial temperature T1 = 25°C = 298 K

We need to find the final pressure P2 at T2 = 845°C = 1118 K.

Since the can is sealed, volumes V1 and V2 remain the same.

Plugging these values into the combined gas law, we get:

(P1 x V1) / T1 = (P2 x V2) / T2

(3.00 atm x V1) / 298 K = (P2 x V1) / 1118 K

Simplifying this equation, we get the following:

P2 = (3.00 atm x V1 x 1118 K) / (298 K x V1)

P2 = 33.8 atm

Therefore, the pressure inside the aerosol can at 845°C is 33.8 atm, which is significantly higher than at room temperature. This demonstrates why it is extremely dangerous to incinerate aerosol cans, as they can explode when exposed to high temperatures.

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If a 100.0g sample of water at 27.8 degrees Celsius is added to a 100.0g sample of water at 73.7 degrees Celsius determine the final temperature of the water assume no heat is lost to the surroundings

Answers

The final temperature of the water is 32.3°C.

If 500.0 g of water at 80.0°C is mixed with 300.0 g of water at 20.0°C, what is the final temperature of the mixture assuming no heat is lost to the surroundings?

The final temperature of the mixture is 53.3°C.

How much heat is lost by a 50.0 g piece of copper initially at 200.0°C when it is placed in 100.0 g of water initially at 25.0°C? The final temperature of the copper and water is 50.0°C.

The heat lost by the copper is 4.19 kJ.

To determine the final temperature of the water, we can use the principle of conservation of energy. The total heat gained by the cooler water is equal to the total heat lost by the hotter water. The heat gained or lost by a substance can be calculated using the formula:

Q = mcΔT

where Q is the heat gained or lost, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.

Let's assume that the final temperature of the water is T. Then, the heat lost by the hotter water is:

Q1 = mcΔT = (100.0 g) x (4.184 J/g°C) x (73.7°C - T)

The heat gained by the cooler water is:

Q2 = mcΔT = (100.0 g) x (4.184 J/g°C) x (T - 27.8°C)

Since the total heat gained is equal to the total heat lost, we can equate Q1 and Q2:

(100.0 g) x (4.184 J/g°C) x (73.7°C - T) = (100.0 g) x (4.184 J/g°C) x (T - 27.8°C)

Simplifying the equation:

3134.4 - 41.84T = 418.4T - 11702.72

459.24T = 14837.12

T = 32.3°C

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What do the red-colored blocks indicate?

Answers

The red-colored blocks indicate non metals in the periodic table. Nonmetals are located on the right side of the periodic table, in the p-block.

Non-metals are composed of a variety of elements, such as carbon, nitrogen, oxygen, sulfur, phosphorus, and selenium. These elements are generally non-reactive, but some of them can form compounds with other elements. They are also used in various industries, such as the production of plastics, fertilizers, and explosives. Non-metals are divided into two categories: metalloids and non-metalloids. Nonmetals are characterized by their lack of luster and their low thermal conductivity.

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an impure sample of table salt that weighed 0.8421 g when dissolved in water and treated with excess agno3 formed 2.044 g of agcl. what percentage of nacl is in the impure sample?

Answers

The percentage of NaCl in the impure sample is 76.25%.

The given weight of an impure sample of table salt is 0.8421 g, and the weight of AgCl formed is 2.044 g. The percentage of NaCl in the impure sample can be determined as follows:

Calculations: Gram molecular weight of NaCl = 23 + 35.5 = 58.5 g

Number of moles of AgCl = weight of AgCl / gram molecular weight of AgCl= 2.044 / 143.5 = 0.0142 mol

The equation of the reaction between NaCl and AgNO3 is given as follows:

NaCl + AgNO3 → NaNO3 + AgCl

It can be seen from the above equation that 1 mole of NaCl gives 1 mole of AgCl.So, the number of moles of NaCl present in the sample is 0.0142 mol.

Percentage of NaCl in the sample = number of moles of NaCl present in the sample / number of moles of the impure sample × molar mass of NaCl × 100= (0.0142 / (0.8421 / 58.5)) × 100= 76.25%

Therefore, the percentage of NaCl in the impure sample is 76.25%.

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Find the volume in liters of a 1. 80 m solution of potassium chloride is required to prepare

0. 100 l of a 0. 600 m solution

Answers

the volume of a 1.80 M solution of potassium chloride that is required to prepare 0.100 L of a 0.600 M solution is 0.0333 L, or 33.3 mL.

To determine the volume of a 1.80 M solution of potassium chloride that is required to prepare 0.100 L of a 0.600 M solution, we can use the formula:

M1V1 = M2V2

where M1 is the initial molarity, V1 is the initial volume, M2 is the final molarity, and V2 is the final volume.

Let's use this formula to solve the problem:

M1 = 1.80 M (since we are starting with a 1.80 M solution)

V1 = ? (what we are trying to find)

M2 = 0.600 M (since we want to prepare a 0.600 M solution)

V2 = 0.100 L (since we want to prepare 0.100 L of the final solution)

Substituting these values into the formula, we get:

1.80 M x V1 = 0.600 M x 0.100 L

Simplifying, we get:

V1 = (0.600 M x 0.100 L) / 1.80 M

V1 = 0.0333 L, or 33.3 mL

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How many g of water are needed to create a 4 molal solution with 9 moles of NaOH?

Answers

The grams of water needed to create a 4 molal solution with 9 moles of NaOH is 2250 grams.

How to calculate grams of water?Molality is defined as moles of solute per kilogram of solvent. Changing the values of moles and molality in the equation will provide the kg of solvent. 4=9/kg of solvent2.25 kilograms per kilogram of solventThe term "total moles of a solute contained in a kilogram of a solvent" is used to define molality. Molality is often referred to as molal concentration. It gauges the amount of solutes in a solution. Solute and solvent are the two parts that make up the solution. which is equivalent to 2250 grams of water.Molality, often known as molal concentration, is the product of the solute's mass and the solvent's mass: Molality = nsolute / msolvent = msolute / (Wsolute msolvent), where: nsolute is the quantity of the solute (in moles)

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When an antacid tablet dissolves in water, the fizz is due to a reaction between sodium hydrogen carbonate (sodium bicarbonate, NaHCO3) and citric acid (H₂CH₂O7).
3 NaHCO3(aq) + H₂C6H₂O7(aq) →3 CO₂(g) + 3 H₂O(l) + Na3CH₂O₂(aq)
How many moles of Na3C6H5O7 can be produced if one tablet containing 0.0217 mol of NaHCO3 is dissolved?

Answers

Therefore, 0.00723 moles of Na3C6H5O7 can be produced if one tablet containing 0.0217 mol of NaHCO3 is dissolved.

What is balanced chemical reaction?

The balanced chemical equation shows that 3 moles of NaHCO3 react with 1 mole of H2C6H6O7 to produce 1 mole of Na3C6H5O7. Therefore, the number of moles of Na3C6H5O7 produced is directly proportional to the number of moles of NaHCO3.

If one tablet containing 0.0217 mol of NaHCO3 is dissolved, then according to the balanced chemical equation, the number of moles of Na3C6H5O7 produced is:

(0.0217 mol NaHCO3) x (1 mol Na3C6H5O7 / 3 mol NaHCO3) = 0.00723 mol Na3C6H5O7

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At the carnival, a baby was given a helium balloon whose pressure equaled the

atmospheric pressure at the carnival which was 102. 7 kPa. However, the baby wasn't

paying attention and the balloon floated away into the troposphere where the

atmospheric pressure is 97. 8 kPa. What is the positive difference between the

pressure in the balloon and the pressure of the troposphere in atm?

atm

Answers

The positive difference between the

pressure in the balloon and the pressure of the troposphere is 0.048 kPa .

The balloon is being compressed by atmospheric force. The balloon is trying to inflate owing to gas pressure. The atmospheric pressure (outside pressure) in a fully inflated balloon is lower than the internal gas pressure.

An inflated balloon has a higher internal pressure than its surrounding air. Because the contracting force produced by the rubber's surface tension balances the expanding force caused by the pressure differential, the balloon remains stable.

Because to the air pressure on the walls, a balloon's surface feels tighter when it is inflated. The internal air pressure gives the balloon its shape. The balloon will therefore be more pressurized after being inflated.

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If 25 g of NH, and 96 g of H₂S react according to the following reaction, what is the maximum mass of ammonium sulfide that can be formed?
2 NH, + H₂S → (NH4)₂S​

Answers

To solve this problem, we need to use stoichiometry to determine the limiting reactant and the theoretical yield of the product.

First, we need to determine the limiting reactant by calculating the number of moles of each reactant:

Number of moles of NH3 = mass / molar mass = 25 g / 17.03 g/mol = 1.47 mol
Number of moles of H2S = mass / molar mass = 96 g / 34.08 g/mol = 2.82 mol

According to the balanced equation, the reaction requires 2 moles of NH3 for every mole of H2S. Therefore, NH3 is the limiting reactant since we only have 1.47 moles of NH3, while we need 2.00 moles to react with all of the H2S.

Now, we can use the number of moles of NH3 to calculate the theoretical yield of (NH4)2S:

Number of moles of (NH4)2S = 1.47 mol NH3 x (1 mol (NH4)2S / 2 mol NH3) = 0.735 mol (NH4)2S

Finally, we can use the molar mass of (NH4)2S to convert the number of moles to mass:

Mass of (NH4)2S = number of moles x molar mass = 0.735 mol x 68.15 g/mol = 50.0 g

Therefore, the maximum mass of ammonium sulfide that can be formed is 50.0 g.

which process could result in the net movement of a substance into a cell, if the substance is more concentrated in the cell than in the surroundings? group of answer choices

Answers

The process that could result in the net movement of a substance into a cell, if the substance is more concentrated in the cell than in the surroundings is called osmosis.

Osmosis is a passive transport process where water molecules move from an area of high concentration to an area of low concentration through a selectively permeable membrane. In this process, a solute moves from a region of high concentration to a region of low concentration. A selectively permeable membrane is a type of biological membrane that allows certain molecules or ions to pass through it by diffusion and occasionally specialized "facilitated diffusion" and passive or active transport processes, while preventing other molecules or ions from passing through it. Therefore, the correct answer is the option C - Osmosis.

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How many grams of NH3
form when 22.3 L
of H2(g)
(measured at STP) reacts with N2
to form NH3
according to this reaction?

N2(g)+3H2(g)→2NH3(g)

Answers

Answer:

11.2823 grams of NH3 are produced
Explanation:

No. of moles for H2 = 22.3/22.4 = 0.9955 moles

By calculating number of moles produced of NH3, by using ratios:

N2 + 3H2 → 2NH3
1    :   3    :    2
? : 0.9955:  ?

part value = 0.9955/3 = 0.33183
No. of moles for NH3 = 2 * 0.33183 = 0.6637 moles

mass of produced NH3 (Molar mass = 17 g/mol) = 0.6637*17 = 11.2823 grams

. We __________ fossil fuels, which releases carbon into the atmosphere.

Answers

Answer:

burn

Explanation:

we burn fossil fuels, which releases carbon into the atmosphere

Answer:

polution

Explanation:

if the global of earth all polution in earth so,use electric bike

is the diamond cubic structure close-packed? explain your rationale. note: a close-packed structure is one where you can find a plane of atoms in that structure where all the atoms touch. for example, fcc and hcp are close- packed structures.

Answers

Yes, the diamond cubic structure is close-packed. In a close-packed structure, you can find a plane of atoms where all the atoms touch. To understand why the diamond cubic structure is close-packed, follow these steps:

1. Identify the structure: The diamond cubic structure consists of two interpenetrating face-centered cubics (fcc) lattices with a relative shift of 1/4 along the space diagonal.

2. Locate the planes: In the diamond cubic structure, there are several planes where atoms touch each other, forming a hexagonal close-packed (hcp) arrangement. For instance, the (111) plane in one of the fcc sublattices is close-packed.

3. Examine neighboring atoms: In these close-packed planes, the atoms are arranged so that each atom touches its neighboring atoms. This close arrangement of atoms maximizes the packing efficiency.

So, based on the presence of close-packed planes and the neighboring atoms touching each other, the diamond cubic structure is considered a close-packed structure.

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what is the mass of 29.3 L of carbon monoxide at STP?

hey guys.. show. work.. i have no idea whats going on

Answers

Answer:

33.67g

Explanation:

To calculate the mass of carbon monoxide, we can use the ideal gas law, which relates the pressure, volume, number of moles, and temperature of a gas:

PV = nRT

Where:

P = pressure

V = volume

n = number of moles

R = ideal gas constant

T = temperature

At STP (standard temperature and pressure), the pressure is 1 atm and the temperature is 273.15 K. The ideal gas constant is R = 0.08206 L atm/(mol K).

To find the number of moles of carbon monoxide in 29.3 L at STP, we can rearrange the ideal gas law to solve for n:

n = PV/(RT)

n = (1 atm)(29.3 L)/(0.08206 L atm/(mol K) * 273.15 K)

n = 1.203 mol

The molar mass of carbon monoxide (CO) is 28.01 g/mol. Therefore, the mass of 1.203 mol of CO is:

mass = n * molar mass

mass = 1.203 mol * 28.01 g/mol

mass = 33.67 g

Therefore, the mass of 29.3 L of carbon monoxide at STP is approximately 33.67 grams.

Please help and write full solution

Answers

The pH of the solution is 1.8. Option C is the right answer

How The answer was obtained

First, we need to calculate the moles of LiOH and HNO3:

Moles of LiOH = 0.1 mol/L × 0.025 L = 0.0025 mol

Moles of HNO3 = 0.1 mol/L × 0.035 L = 0.0035 mol

Next, we need to determine which of the reactants will be limiting. LiOH and HNO3 react in a 1:1 stoichiometric ratio, so whichever reactant is present in the smaller amount will be limiting. In this case, LiOH is limiting because it has fewer moles than HNO3.

The balanced chemical equation for the reaction between LiOH and HNO3 is:

LiOH + HNO3 → LiNO3 + H2O

Since LiOH is limiting, all of it will react with HNO3. This means that all of the moles of HNO3 will be consumed, and there will be some excess LiOH remaining.

Moles of LiOH remaining = Moles of LiOH - Moles of HNO3 = 0.0025 mol - 0.0035 mol = -0.0010 mol

Note that the result is negative, which means that all of the HNO3 has been consumed, and there is still some LiOH remaining.

The concentration of LiOH in the final solution is:

[LiOH] = Moles of LiOH remaining / Total volume of solution = -0.0010 mol / (0.025 L + 0.035 L) = -0.010 mol/L

Again, the result is negative, which is not physically meaningful. This indicates that our assumption that LiOH is limiting is incorrect.

To correct this, we can assume that HNO3 is limiting and repeat the calculations. In this case, all of the HNO3 will react with LiOH, and there will be some excess HNO3 remaining.

Moles of HNO3 remaining = Moles of HNO3 - Moles of LiOH = 0.0035 mol - 0.0025 mol = 0.0010 mol

The concentration of HNO3 in the final solution is:

[HNO3] = Moles of HNO3 remaining / Total volume of solution = 0.0010 mol / (0.025 L + 0.035 L) = 0.01 mol/L

The balanced chemical equation for the reaction between HNO3 and LiOH is:

HNO3 + LiOH → LiNO3 + H2O

The stoichiometry of this reaction tells us that one mole of HNO3 reacts with one mole of LiOH to produce one mole of water. Therefore, the moles of water produced in the reaction are equal to the moles of HNO3 remaining:

Moles of water = 0.0010 mol

The volume of the final solution is:

Volume = 0.025 L + 0.035 L = 0.06 L

The molarity of the water in the final solution is:

Molarity of water = Moles of water / Volume of solution = 0.0010 mol / 0.06 L = 0.0167 mol/L

The pH of water is 7.0, and the pH of a solution is related to the concentration of H+ ions in the solution. Since water is neutral and does not contribute any H+ ions, the pH of the final solution is:

pH = 7.0 - log[H+] = 7.0 - log(0.0167) ≈ 1.8

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Determine the pH of the solution when 25ml of 0.1mLiOH is added to 35ml of 0.1m nitric acid

(A) 0.23

(B) 0.47

(C) 1.8

(D) 7.0

The particles in.......... can be separated from
heterogeneous mixtures by passing the mixture through a filter.
-suspension
-solution
-colloid
-pure substance

Answers

The particles in suspension can be separated from heterogenous mixtures by passing the mixture through a filter. Option 1.

Particles in a suspension

The particles in suspension can be separated from heterogeneous mixtures by passing the mixture through a filter.

A suspension is a heterogeneous mixture in which the particles are large enough to settle out over time and can be separated by physical means such as filtration.

Other options such as solution, colloid, and pure substances cannot be separated using a filter.

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Name the following formula: BF2 (hint: treat boron like a nonmetal)
A. Boron fluoride
B. Monoboron difluoride
C. Boron difluoride
D. Boron (II) fluoride
E. Best Friends Forever

Answers

The name of the formula BF2 is : C.) Boron difluoride. The number of atoms of each element in a compound is known by chemical formula.

What is meant by chemical formula?

Chemical formula is an expression that shows elements in a compound and relative proportions of those elements. If only one atom of specific type is present, then no subscript is used. For atoms that have two or more of a specific type of atom present, then a subscript is written after the symbol for that atom.

Chemical formula contains the symbols of atoms of the elements present in the compound and also how many there are for each element in the form of subscripts.

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Is the pattern of atomic radius absolute or general (always true or generally true)?

Answers

Answer:  

Generally true.

Explanation:

As you go down the columns of the Periodic Table, the radius of the atom increases.

As you go across the Periodic Table (left to right), the radius of the atoms decrease.

Therefore, the second element on the table, Helium, has the smallest radius and element 87, Francium has the largest radius.

There are a few exception scattered throughout the table, such as the lanthanides and actinides, but generally speaking the radius increases as you travel from right to left and top to bottom.

Zinc hydroxide, Zn(OH)2, is precipitated from the tailings ponds of zinc mining operations before the water is released into local rivers. This reduces the concentration of Zn2+ ions in the wastewater. 5.00 kg of sludge containing zinc hydroxide is titrated against HCl solution and 1.50 L of 2.0 M acid is required to reach the endpoint and neutralize the zinc hydroxide. What mass of zinc is contained in the 5.00 kg sludge?

Answers

Answer:

First, we need to find the number of moles of HCl used in the titration:

moles HCl = M x V = 2.0 mol/L x 1.50 L = 3.00 mol

Since zinc hydroxide and HCl react in a 1:2 molar ratio according to the balanced chemical equation:

Zn(OH)2 + 2 HCl → ZnCl2 + 2 H2O

we know that twice as many moles of HCl are required to react with each mole of Zn(OH)2. Therefore, the number of moles of zinc hydroxide in the 5.00 kg sludge can be calculated as follows:

moles Zn(OH)2 = 1/2 x moles HCl = 1/2 x 3.00 mol = 1.50 mol

Finally, we can use the molar mass of Zn(OH)2 to convert the number of moles to mass:

mass Zn(OH)2 = moles Zn(OH)2 x molar mass Zn(OH)2

= 1.50 mol x 99.39 g/mol

= 149.1 g

Therefore, the mass of zinc contained in the 5.00 kg sludge is 149.1 grams.

Explanation:

What is the percent composition of MgSO4 in a solution if 18.6 grams MgSO4 is dissolved in 229 g water ?

Answers

Percent of water of crystallisation in MgSO4⋅7H2O=2467×18×100=51. 2 %.

How can you tell what proportion of the composition is water?

Divide by 100 the mass of the hydrate and the volume of water lost. The amount of water in one mole of the hydrate must be multiplied by 100 after being divided by the hydrate's molar mass in order to determine the theoretical (actual) percent hydration (percent water) using the formula.

Hence, this ratio might be represented by one magnesium sulfate formula unit to seven water molecules. Since MgSO47H2O is the chemical formula for magnesium sulfate hydrate, the value of x must be seven. The value of x in the chemical formula for magnesium sulfate hydrate is thus seven.

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Show how to carry out the following transformation in the highest yield possible. Select the appropriate reagents and/or draw the correct organic product at each step. Use an expanded octet on sulfur to minimize formal charges

Answers

Factors that make the higher yield of crop possible are as follows: enough water for irrigation. access of organic manure of high quality . Fertilizers are a factor in the higher yields of high-cost farming.

Fertilizer is used to ensure good vegetative growth (leaves, branches and flowers), giving rise to healthy plants. They are artificially made but have a rapid response. Overuse of fertilisers can cause negative effects like loose soil fertility. There's a risk with any bond that the issuing company might not be able to meet its obligations.

However, the risks of default are typically higher for companies that issue high-yield bonds. Interest rate . If the octet is expanded with preferred number of bonds, formal charge = 0. The S-atom will gain two electrons in order to complete its octet.

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HELP MEEE I will give good stuff hahahahhaha, okay help

Answers

Answer: Its the bottom one

if a given amount of gas has a pressure of 787.0mmHg and a volume of 970.0mL what would its final volume be at 897.0mmHg and keeping the temperature constant

Answers

Final volume of the gas would be 850.5 mL when the pressure is increased from 787.0 mmHg to 897.0 mmHg while keeping the temperature constant.

What is Boyle's law?

Boyle's Law explains that when temperature of given mass of confined gas is constant, then the product of its pressure and volume is also constant.

Given, P1 = 787.0 mmHg ; V1 = 970.0 mL; P2 = 897.0 mmHg

V2 = ?

As P1V1 = P2V2

V2 = P1V1/ P2

V2 = (787.0 mmHg x 970.0 mL) / 897.0 mmHg

V2 = 850.5 mL

Therefore, the final volume of the gas would be 850.5 mL when the pressure is increased from 787.0 mmHg to 897.0 mmHg while keeping the temperature constant.

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what does the NaBr + CI2 in the reaction?
NaBr + CI2 -> NaCI + Br2
A. Reactants
B. States of matter
C. Products
D. Yields

Answers

Answer:- NaBr and Cl2 are reactants .

The atoms/molecules/ions on RHS of the reaction which react to give products are called reactants.

So here Sodium bromide and chlorine are the reactants.

Option A is the correct choice.

Additional information:-

Law of conservation of Mass :-

According to this law , the mass of reactants is equal to the mass of the products . Take a chemical reaction ,

C + O2 ==> CO2

Now suppose that if 12g of carbon reacts with 16g of oxygen to form carbon dioxide, then what will be the mass of carbon dioxide? So by law of conservation of Mass we can say that mass of carbon dioxide will be equal to mass of the reactants that will be 12g + 16g = 28g

With this I am leaving a sample problem for you to solve,

Question: Consider the following reaction .

2C + O2 ==> 2CO

If the mass of carbon taken is 24g and the amount of carbon monoxide formed is 56g , find the amount of oxygen used in the reaction.

Answer:D. Yields

Explanation:

I am mixing vinegar and baking soda in a bottle. If I want to be sure that Conservation of Mass is followed, what should I make sure to do?


Answers

Law of conservation of mass was crucial to progression of chemistry, as it helped scientists understand that substances did not disappear as result of reaction.

What is conservation of mass?

Law of conservation of mass explains that in chemical reaction mass is neither created nor destroyed.

To ensure Conservation of Mass is followed when mixing vinegar and baking soda in a bottle, you should make sure to do the following:

Weigh the bottle and its contents before adding vinegar and baking soda. This will give the initial mass of system.

Carefully measure the amounts of vinegar and baking soda you add to bottle.

Quickly and securely cap the bottle after adding baking soda to avoid any gas from escaping.

Weigh the bottle and its contents again after reaction has completed and the gas has stopped escaping. This will give the final mass of the system.

Compare the initial and final masses of system. They should be equal within experimental error.

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How many molecules are contained in
1357 mL of O2 gas at −14◦C and 1437 torr?
Answer in units of molec.

Answers

There are approximately 6.031 x 10^23 molecules of O2 gas contained in 1357 mL of O2 gas at −14°C and 1437 torr.

we can use the ideal gas law:

PV = nRT

where, P = pressure of the gas in torr,

V = volume of the gas in liters,

n = number of moles of gas,

R = ideal gas constant (0.08206 L·atm/mol·K),

T = temperature of the gas in Kelvin.

the volume of the gas from milliliters (mL) to liters (L):

V = 1357 mL / 1000 mL/L

V = 1.357 L

Now to convert the temperature of the gas from Celsius (°C) to Kelvin (K):

T = -14°C + 273.15

T = 259.15 K

Substituting the given values:

(1437 torr) (1.357 L) = n (0.08206 L·atm/mol·K) (259.15 K)

n = (1437 torr x 1.357 L) / (0.08206 L·atm/mol·K x 259.15 K)

n = 1.0008 mol

the number of moles of O2 gas contained in 1357 mL of O2 gas at −14°C and 1437 torr is 1.0008 mol. To find the number of molecules,

we can use Avogadro's number:

1 mol of O2 gas contains 6.022 x 10^23 molecules

So, the number of molecules in 1.0008 mol of O2 gas is:

(1.0008 mol) x (6.022 x 10^23 molecules/mol) = 6.031 x 10^23 molecules

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