whoever responds first will get brainliest :) Reactions must be balanced because of the conservation of matter, which means all of these EXCEPT which one (Which is WRONG about balancing)?


A. Atoms cannot be destroyed

B. New elements, but not new substances can form New substances

C. New substances, but not new elements can form

D.Atoms cannot be created

89.08 g/mol is the molar mass of an unknown gas with a density of 14.1 g/L at 4.00 atm and 35.0 °C.

We know that

PV=nRT.

where,

P = Pressure of the gas

V = Volume of the gas

n = Mole

Mole = Given mass/Molar mass

= m /Mw

R = Real gas constant = .08205 L atm/mole k

T = temperature

Now,

PV = mRT/Mw

Mw= mRT/PV. ( m/V=density)

Mw = dRT/P

Mw = 14.1 g/L × 0.08205 × 308/4

Mw = 89.08 g/mol

Hence we can say that Molar mass is 89.08 g/mol.

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In the given diagram of photosynthesis:

1. Carbon dioxide CO₂

2. Glucose C₆H₁₂O₆

3. ATP

Photosynthesis can be described as a process by which phototrophs convert light into chemical energy. This chemical energy is stored in the form of sugars, which are generated from water and carbon dioxide.

Photosynthesis reaction involves carbon dioxide and water which yield two products oxygen and glucose. Therefore, the photosynthesis reaction is said to be an endothermic reaction.

[tex]6CO_2 + 6H_2O \longrightarrow C_6H_{12}O_6 + 6O_2[/tex]

Photosynthesis takes place when plants use light energy to transform carbon dioxide gas and water into glucose and oxygen gas. Each chloroplast in plants contains a green-colored pigment known as chlorophyll. Sunlight is absorbed by chlorophyll whereas carbon dioxide and oxygen enter via the tiny pores of the stomata of leaves.

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Answer:

Radon, Bismuth, Lead, and Thallium

Explanation:

Its from smallest to largest. Hope it helps!

1. The name of the reaction is double displacement reaction

2. Aluminum (Al) will react with CuCl₂ but not with MgCl₂ because Mg is higher than Al in the electrochemical series

1. How do I know the type of reaction occurring?

To know the type of reaction occurring, we shall write the balanced equation for the reaction. Details below:

MgCl₂ + Na₂CO₃ -> 2NaCl + MgCO₃

From the balanced equation above, we can see clearly that there is an exchange of ions as Na and Mg exchanges and likes Cl₂ and CO₃.

Thus, we can conclude that the reaction is a double displacement reaction

2. Why will Al react with CuCl₂ but not with MgCl₂?

The reactivity of metals is controlled by their position in the electrochemical series.

Metals higher in the electrochemical series are more reactive and will displace the less reactive metals from solution.

The attached photo shows the electrochemical series of metals.

We can see that magnesium, Mg is higher than aluminum, Al in the electrochemical series and as such, Al can not displace Mg from solution.

Thus, we can conclude that Al can not react with MgCl₂ since Mg is higher than Al in electrochemical series.

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The balanced chemical equation is 3 Sr(OH)₂ + Al₂(SO₄)₃[tex]\rightarrow[/tex] 3 SrSO₄ + 2 Al(OH)₃.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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Alcohol iodide nucleophile Is identified as  the alkyl iodide and the nucleophile that would be used.

Nucleophile is defined as a chemical species that provides an electron pair to create a chemical bond in response to an action. A nucleophile typically has one electron pair and is negatively charged or neutral.

Alcohols with alkyl halides of hydrogen. Alcohols often undergo a nucleophilic substitution reaction to produce an alkyl halide and water when exposed to HBr or HCl. Alkanes and alcohols can be converted into alkyl halides through a nucleophilic substitution process.

Thus, alcohol iodide nucleophile Is identified as  the alkyl iodide and the nucleophile that would be used.

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The  spontaneous reaction among the given reactions is :

Spontaneous reactions are reactions that can proceed on their own without the addition of energy from an external source.

The free energy change of spontaneous reactions must be less than zero.

This implies that the energy change in a spontaneous reaction favors the formation of products and the reaction will proceed to product formation without an external source of energy supply.

Considering the given reactions:

The reaction that will be spontaneous is one that favors product formation.

Berylium is more reactive than Tin, hence, the reation below is spontaneous.

Be(s) + Sn²⁺ (aq) ---> Sn(s) + Be²⁺ (aq)

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Answer:

varying altitude and latitude create unequal heating of Earth's atmosphere

Explanation:

the higher you are, the colder it is(most of the time)

and latitude determines how close you are to the poles, the closer the cooler

The synthesis of the ATP takes place in the organelle known as the mitochondrion. Therefore, option (A) is correct.

Mitochondrion can be described as the membrane-bound organelles in the cytoplasm of all eukaryotic cells, that synthesize adenosine triphosphate (ATP), the main energy source used by the cell.

It is also known as the “Powerhouse of the cell,” Mitochondrion is found inside the cytoplasm and essentially functions as the cell’s digestive system.

Mitochondrion plays a major role in breaking down nutrients and producing energy-rich molecules for the cell. Many of the biochemical reactions in cellular respiration occur within the mitochondria.

The mitochondrion's structure can be described as a double-membraned, rod-shaped structure found in both animal cells and plants.

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Answer:

As you travel away from the Earth's surface, your mass stays the same but your weight reduces as gravitational pull decreases. For example, an astronaut orbiting the Earth and floating weightlessly in the cabin still has the same mass.

Explanation:

Answer:

Explanation:

Dimensional analysis, using mole ratio from the balanced reaction: (7.63 mole CuO) * (1 mole N2 /3 mole CuO) = 2.54 mole N2

Answer:

Explanation:The electronic configuration of Oxygen is 1 s 2 2 s 2 2 p 4 .

1s²2s²2p⁶ is a reasonable electron configuration. Therefore, the correct option is option D.

The arrangement of an atom's or molecule's (or other physical structure's) electrons in their atomic or molecular orbitals is known as the electron configuration in atomic physics or quantum chemistry. For instance, the neon atom's electron configuration is 1s2 2s2 2p6, which means that 1, 2 and 6 electrons, respectively, are present in each of the 1s, 2s, and 2p subshells.

According to electronic configurations, each electron moves individually within an orbital while being surrounded by an average field produced by all other orbitals. Slater determinants and configuration state functions are used to mathematically describe configurations. 1s²2s²2p⁶ is a reasonable electron configuration.

Therefore, the correct option is option D.

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Answer:

It is based on the boiling point or volatility of its components.

Explanation:

because Distillation separates liquid from solid.

Answer: Chorine's atomic radius in larger than that of Argon.

Explanation: Thinking in terms of atomic radius, as you move from left to right on the periodic table, atomic radius decreases. However, as you move from top to bottom on the periodic table, the atomic radius increases. This is because when you are moving from top to bottom on the periodic table, more orbitals are added. When you move from left to right, the number of orbitals remains the same but the number of protons in the nucleus is still increasing. They have a stronger hold on the electrons and pull them closer. This also makes it harder for outside photons to remove an electron from an atom (ionization energy) as you move from left to right on the periodic table.

Now let's think about chlorine and argon. They are right next to each other in the upper right-hand corner of the periodic table. However, chlorine does come first and if we think back to the atomic radius, it gets smaller as you move from left to right. Chlorine comes before Argon when looking left to right.

In conclusion, chorine's atomic radius is larger than that of argon.

Ideal gas law is valid only for ideal gas not for vanderwaal gas. To solve such, we need to know the relation between rate of effusion and molar mass of gases. Therefore, the molar mass of unknown gas is 53.6g/mol.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature.

Mathematically the relation between rate of effusion of gases and their molar masses can be given as:

rate of effusion of unknown gas/rate of effusion of carbon dioxide gas=√molar mass of carbon dioxide/molar mass of particular gas

rate of effusion of carbon dioxide=1.087 ×rate of effusion of unknown gas

Substituting all the given values we get

rate of effusion of unknown gas÷ 1.087 ×rate of effusion of unknown gas=√44 g/mol÷ molar mass of unknown gas

1÷  1.087=√44 g/mol÷ molar mass of unknown gas

squaring both side

0.82=44 g/mol÷ molar mass of unknown gas

molar mass of unknown gas= 53.6g/mol

Therefore, the molar mass of unknown gas is 53.6g/mol

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In this chemical equation below 2Mg + HCI are called the reactants. Therefore, option (4) is correct.

A chemical equation can be defined as a representation of a chemical reaction with help of chemical symbols, and molecular formulae of the substances. A chemical equation exhibits reactants participating, formed products in the reaction, and an arrow shows the direction of the chemical reaction.

The chemical equation in which the number of atoms of each element on either side of the equation should be equal is called a balanced chemical equation.

A chemical equation obeys the law of conservation of mass.  By obeying this law,  in a balanced chemical equation, the total mass on the reactant side must be equal to total mass on the product side.

In the given chemical equation, Mg and HCl are reactants and MgCl₂and H₂ are products.

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Explanation:

no. of H atoms is 12..

no of C atoms is 5....

all the C atoms are sharing a bond with each other and so are H atoms...

The rate of effusion of CO at 2.00 atm in the same container would be 1.74 mL/min.

According to Graham's law of effusion of gases, at constant pressure, the rate of effusion of gases is inversely proportional to the square root of their molar masses.  

Graham's law of effusion of gases can be mathematically represented as:

[tex]r_1/r_2[/tex] = [tex]\sqrt\frac{Mm_2}{Mm_1}[/tex]

Where [tex]r_1[/tex] and [tex]r_2[/tex] are effusion rates of gas 1 and gas 2, and [tex]Mm_1[/tex] and [tex]Mm_2[/tex] are their molar masses respectively.

In this case:

Gas 1 = CH

Molar mass of CH = 12 + 1 = 13 g/mol

[tex]r_1[/tex] = 2.55

Gas 2 = CO

Molar mass = 12 + 16 = 28 g/mol

[tex]r_2[/tex] = ?

Making [tex]r_2[/tex] the subject of the formula and substituting the values into the equation:

2.55/[tex]r_2[/tex] = [tex]\sqrt\frac{28}{13}[/tex]

2.55/[tex]r_2[/tex] = 1.4676

[tex]r_2[/tex]        = 2.55/1.4676

          = 1.74 mL/min

In other words, the rate of effusion of CO at 2.00 atm in the same container would be 1.74 mL/min.

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Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, the volume of gas will be collected for the complete reaction of 24.23 g of NiO is 4.19L.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature. There is no force of attraction between the particles.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of gas sample

V= volume of gas sample

n =number of moles of gas sample

T =temperature of gas

R = Gas constant = 0.0821 L.atm/K.mol

Substituting all the given values, we get

Molar mass of NiO=74.6928g/mol

mass of NiO= 24.23 g

Number of moles of NiO =0.324

From reaction the molar ratio between NiO and O[tex]_2[/tex] is 2:1

Number of moles of O[tex]_2[/tex] =0.16moles

applying ideal gas equation

0.98atm×V =0.16× 0.0821×313

V =4.19L

Therefore, the volume of gas will be collected for the complete reaction of 24.23 g of NiO is 4.19L.

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so basically maybe you should

Answer:

no. of H = 10

no. of C = 4

C4H10

Here the substance is water. So, we need to know the value of specific heat capacity of water to solve this question.

The specific heat capacity of water is 4.18 J/g° C.

This is the heat required to increase the temperature by one degree Celsius. To increase the temperature by 20 degree C, the heat required will be 2 times of 4.18 J/g° C.

The heat required to raise the temperature of n grams of a substance by m0C will be,

Let us rewrite the equation as,

q = mc Δ t

Where q is the heat required, m is the mass of the substance, c is the specific heat capacity of the substance and Δ t is the temperature difference.

Given that,

m = 200g

Δ t = 55° C – 35° C = 20° C

c = 4.18 J/g° C

Let us substitute the values:

q = 200*4.18*20

Hence the heat required is 16720J.

Converting it to kJ, the heat required to raise the temperature of 200 grams of water from 55° C to 35° C is 167 KJ.

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The number of food Calories (Cal) that are in the package of M&M's are

431000 Joules.

When we measure the temperature change of the calorimeter, we may use this equation to compute the heat released by a sample because the calorimeter is an instrument for which we are aware of (or can ascertain) its heat capacity.

When a liquid absorbs or loses energy, the temperature of the liquid varies.

In accordance with the formula

Q= mCΔT

m = 200g

ΔT = 550 - 35

ΔT = 515

C = 4.182 J/kg °C

Q is equal to 200 * 4182 * 515

Q = 430746 Joules.

Water has a 4,200 J/kg°C (joules per kilogram per degree Celsius) specific heat capacity. This indicates that 4,200 J are required to increase the temperature of 1 kilogram of water by 1°C.

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Each sentence about the bioavailability of minerals in foods should be completed with either increases or decreases as follows:

Nutrients can be defined as the chemical compounds (substances) or minerals that are present in food, and they are needed by the body of a living organism for healthy growth, reproduction, development, proper functioning, and reproduction.

In Science, there are five (5) main classes of nutrients and these include the following:

In conclusion, phytic acid, oxalic acid, and refinement of grains are factors that decrease the bioavailability of minerals in foods while Vitamin C and Vitamin D increases the bioavailability of minerals in foods.

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Photosynthesis may help reduce global warming because the carbon dioxide is consumed during the process.

Global warming has to do with an increase in the average global temperature brought about by the increase in the concentration of greenhouse gases in the atmosphere.

The greenhouse gases form a layer that traps reflected solar radiation in the atmosphere. They prevent these radiations from returning back to space and consequently, the temperature of the planet keeps increasing. The more the concentration of these gases in the atmosphere, the more the warming increases.

Carbon dioxide gas represents a major component of greenhouse gases and has been the main culprit in global warming.

During photosynthesis, carbon dioxide is utilized by green plants to make carbohydrates. Thus, photosynthesis remains a major way through which the concentration of carbon dioxide in the atmosphere can be reduced and consequently reduce global warming.

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Answer:

symmetric

Explanation:

The compound 2,3-dimethyl-2-heptene is symmetric. A compound is symmetric if it has an identical molecular structure on both sides of its central axis. In the case of 2,3-dimethyl-2-heptene, the molecule has a central carbon atom with two methyl groups attached to it, one on the 2nd position and one on the 3rd position. Because the groups attached to the central carbon atom are identical, the molecule is symmetric.

In contrast, an asymmetric compound has a molecular structure that is different on each side of its central axis. For example, a compound with a central carbon atom attached to two different groups, such as a methyl group and a hydrogen atom, would be asymmetric.

Answer:

[tex] \huge{ \boxed{2.0468 \times {10}^{22} \: \text{atoms} }}[/tex]

Explanation:

To find the number of entities in a given substance we use the formula

[tex] \bold{N = n \times L} [/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

n = 0.034 moles

N = 0.034 × 6.02 × 10²³ = 2.0468 × 10²²

We have the final answer as

[tex] \bold{2.0468 \times {10}^{22} \: \text{atoms}}[/tex]

The chemical reaction is fe2+ Pt(s) ∣ fe3+ (aq) ∣∣cr2O²-7(aq),cr+3(aq) ∣ Pt(s)

Reaction where particular set of chemicals changes into another form without changing their nuclei just the transfer or sharing of electrons and formation and breaking of bonds is called as chemical reaction.

cr-2 7​ (aq)+ 14H+(aq)+ 6fe2+(aq)⟶6fe+3(aq)+2cr+3 (aq)+7h2 O(l)

Here,  cr+6 2 02-7  (aq) is reduced to  cr+3  (aq)

& fe+2 (aq) is oxidized to fe+3 (aq)

Reducing takes place at cathode & oxidation takes place at anode.

The cell is represented by anode on the left hand side of electrolyte bridge & cathode on the right hand side of electrolyte bridge.

∴  It can be represented as :

Pt(s) ∣ fe 3 + (aq)fe2+ (aq) ∣∣ cr2 o2-  7(aq),cr+3 (aq) ∣ Pt(s)

The complete question is : The cell reaction cr2 O2(aq)+14H+aq)+ 6fe2+(aq)→ 6fe3+(aq)+ (aq)+7H2 O(l), is best represented by:

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The chirality of the enzyme ensures that a chiral product is obtained.

The term chirality could be simplified to mean "handedness". This idea comes from the fact that a compound could be handed. The handed of aa molecule has to do with the direction to which it rotates plane polarized. As such a compound could be left handed or right handed.

Now, we are told that the product of the enzyme is chiral. This is because the enzyme is also chiral and its shape can only lock into the particular chiral reactant and this is what does give rise to the chiral product.

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Answer: none

Explanation:none