A 430 mL container of nitrogen gas is at a pressure of 600 mmHg.
If the temperature is held constant, what volume container would
be needed if the pressure were lowered to 500 mmHg? NOTE: You
must show your calculation on the attached scratch paper, including which of the Gas Law formulas you used.
A. 358 mL
B. 516 mL
C. 698 mL
D. need more information
(Show your work please)

Answer:

temperature and number of molecules of gas

Explanation:

Boyle's law is one of the gas laws, which states that the volume of a gas is inversely proportional to the pressure at a constant temperature. The Boyle's law equation is given as follows:

P ∝ (1/V)

P = K/V

PV = K

Based on these, the temperature of an ideal gas and the number of molecules in the gas are kept constant in Boyle's law.

Answer:

Hello, Im Mack. Hope you're doing well. :)

Here is my Correct, custom answer for the lab Question, (I also took the same assignment and got a 100% score)

Explanation:

The heating of the sodium acetate solution made it change from super-saturated to un-saturated. Yet now that it cooled back to room temperature Im sure it is saturated. it wasn't able to disolve the excess sodium acetate left over at room temperature and had to be heated so now that it is back to room temperature I Think it will not disolve the sodium acetate left in the solution until it is heated again.    

Hope this helped you out,

Please feel free to comment for further help, and I'll reply asap.

Have a great day my friend :)

Answer:

While ionic bonds join metals to nonmetals, and covalent bonds join nonmetals to nonmetals, metallic bonds are responsible for the bonding between metal atoms. In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize.

Explanation:

Answer:

A

Explanation:

Hydrogen isn't an alkali metal

Answer:

hydrogen

Explanation:

hydrogen is a gas not a metal

The identity of the sample is copper. The correct option is  D. copper

To determine the identity of the sample, we will determine its specific heat, c.

From the formula

Q = mcΔT

Where Q is the quantity of heat

m is the mass

c is the specific heat of the substance

and ΔT is the change in temperature

From the given information

Q = 3080 J

m = 200 g

ΔT = T₂ - T₁ = 60°C - 20°C = 40°C

Putting the parameters into the formula, we get

3080 = 200 × c × 40

3080 = 8000c

∴ c = 3080 ÷ 8000

c = 0.385 J / g°C

From specific heat table, the substance that has a specific heat of 0.385 J / g°C is Copper.

Hence, the identity of the sample is copper. The correct option is  D. copper

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Answer:

option B

Explanation:

The ΔH fusion of a substance is the energy evolved per one mole. Then mass of the substance that evolves 1 KJ of energy is 1 KJ divided by ΔH fusion. Then divide the obtained mass by density in g/ml. Thus option B is correct.

Fusion enthalpy is the heat energy released during the fusion of molecules in a substance. The liquid phase changes to solid phase by fusion. The enthalpy of fusion depends on the bond type and temperature as well as presence of impurities if any.

The heat of fusion, ΔH fusion for a substance is the energy released by the fusion of one mole of that substance. The mass of one mole is expressed in g/mol.

Then, the number of moles  of the substance that release 1 KJ energy is:

1 KJ / ΔH fusion

then, mass = no.of moles × mass

then, volume = mass/density in g/ml

then the expression, becomes

1kJ * 1/ΔHfusion * g/mol x ml/g liquid

Therefore, option B is correct.

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Answer:

555 g of CaCl2

530 g of Na2CO3

Explanation:

The equation of this reaction is;

CaCl2 + Na2CO3 ------>CaCO3 + 2NaCl

Number of moles of CaCO3 produced = 500g/100g/mol = 5 moles

If the reaction is in a mole ratio of 1:1 then i need 5 moles of CaCl2 and 5 Moles of Na2CO3.

Mass of CaCl2 required = 5 moles * 111 g/mol = 555 g

Mass of Na2CO3 required = 5 moles * 106 g/mol  = 530 g

Answer:

The answer is A: (more below)

Liquid A: Neutral

Liquid B: Acid

Liquid C: Base

Explanation:

Ph scale: 1 - 6 are acids, 7 is neutral, 8 - 14 are bases.  

14

13

12

11

10

9

8

7

6

5

4

3

2

1

Answer:I believe it is c.

Explanation:

Answer:

C., or "geothermal energy."

Answer:

a) 2 (H+) ions

b) 1 (SO3²-) ions

c) 1.36 × 10^-22 grams.

Explanation:

According to this question, sulfurous acid has a chemical formula; H2SO3. It is made up of hydrogen and sulfite ion. Hydrogen ion (H+) is the cation while sulfite ion (SO32-) is the anion.

Based on the chemical formula, there are 2 moles of hydrogen ions that reacts with 1 mole of sulfite ion as follows:

2H+ + SO3²- → H2SO3

Hence;

- there are 2 hydrogen ions (2H+) present in H2SO3.

- there is 1 sulfite ion (SO3²-) present in H2SO3.

c) The mass of one formula unit of H2SO3 is calculated thus:

= 1.008 (2) + 32.065 + 15.999(3)

= 2.016 + 32.065 + 47.997

= 82.08 a.m.u

Since, 1 gram is = 6.02 x 10^23 a.m.u

82.08 a.m.u = 82.08/6.02 × 10^-23

= 13.6 × 10^-23

= 1.36 × 10^-22 grams.

Answer:

Atoms have protons and neutrons in the center, making the nucleus, while the electrons orbit the nucleus. The modern atomic theory states that atoms of one element has its own characteristics atomic number.

Answer: single, normal weather event like a hurricane

Explanation:

Climate change is variation in the average weather conditions. This brings about a wetter, drier or warmer condition. Climate change is typically caused by human activities.

Some of the recent changes in global climate include prairies giving way to deserts in Africa and the American West, more and longer heat waves and coral reefs dying off.

It should be noted that a single, normal weather event like a hurricane isn't a result of climate change.

Answer:

1.9 L

Explanation:

Step 1: Given data

Step 2: Calculate the final volume of the gas

If we assume ideal behavior, we can calculate the final volume of the gas using the combined gas law.

P₁ × V₁ / T₁ = P₂ × V₂ / T₂

V₂ = P₁ × V₁ × T₂ / T₁ × P₂

V₂ = 1.5 atm × 3.0 L × 303 K / 293 K × 2.5 atm = 1.9 L

Answer:

D

Explanation:

sound is produced when the matter vibrates

Answer:

D

Explanation:

the sound that is made is basically energy. This energy we call it vibration

Mass of Calcium Carbonate = 500 grams

The required reaction would be:

CaCl₂ + Na₂CO₃ → CaCO₃ + 2NaCl

Number of moles of CaCO₃:

Number of moles = given mass / molar mass

Number of moles = 500 / 100              [molar mass of CaCO₃ = 100g/mol]

Number of moles = 5 moles

Using the power of stoichiometry!!!

CaCl₂ + Na₂CO₃ → CaCO₃ + 2NaCl

from the balanced reaction listed above, we can see that one mole of CaCl₂ and one mole of Na₂CO₃ produces one mole of CaCO₃

Moles of CaCl₂ = Moles of Na₂CO₃ = Moles of CaCO₃

we just solved for the number of moles of CaCO₃, which gives us

Moles of CaCl₂ = Moles of Na₂CO₃ = 5 moles

Hence, 5 moles of CaCl₂ and Na₂CO₃ each is required

Answer:

39.2 g

Explanation:

2Ni₂O₃(s) ⟶ 4Ni(s) + 3O₂(g)

First we convert 55.3 g of Ni₂O₃ into moles, using its molar mass:

55.3 g ÷ 165.39 g/mol = 0.334 mol Ni₂O₃

Then we convert 0.334 Ni₂O₃ moles into Ni moles, using the stoichiometric coefficients of the balanced reaction:

0.334 mol Ni₂O₃ * [tex]\frac{4molNi}{2molNi_2O_3}[/tex] = 0.668 mol Ni

Finally we convert 0.668 Ni moles into grams, using its molar mass:

0.668 mol * 58.69 g/mol = 39.2 g

Given

Mass of NO - 824 g

Molar mass of NO - 30.01g/mol

No of moles of NO = Given mass/Molar mass

No of moles of NO = 824/30.01= 27.45 mole

Hence 27.5 moles of NO are formed!

We are given that the concentration of NaOH is 0.0003 M and are asked to calculate the pH

We know that NaOH dissociates by the following reaction:

NaOH → Na⁺ + OH⁻

Which means that one mole of NaOH produces one mole of OH⁻ ion, which is what we care about since the pH is affected only by the concentration of H⁺ and OH⁻ ions

Now that we know that one mole of NaOH produces one mole of OH⁻, 0.0003M NaOH will produce 0.0003M OH⁻

Concentration of OH⁻ (also written as [OH⁻]) = 3 * 10⁻⁴

pOH of the solution:

pOH = -log[OH⁻] = -log(3 * 10⁻⁴)

pOH = -0.477 + 4

pOH = 3.523

pH of the solution:

We know that the sum of pH and pOH of a solution is 14

pH + pOH = 14

pH + 3.523 = 14                              [subtracting 3.523 from both sides]

pH = 10.477                        

Answer:

josephmelichar

Explanation:

In the first step, 2 protons combine. In doing so one of the protons will convert into a neutron by losing a positron (positive electron) and a neutrino; this is also known as beta decay. This changes one of the protons (positive charge) into a neutron (neutral charge) and allows the two particles to combine.

Answer:

A budget is an estimation of revenue and expenses over a specified future period of time and is usually compiled and re-evaluated on a periodic basis. Budgets can be made for a person, a group of people, a business, a government, or just about anything else that makes and spends money.

Answer:

20 moles of o2

5 moles=4moles

?moles=16moles

Monounsaturated Fat 1g

Answer:

Explain

The Akautski is now assembled

The final temperature of the system can be calculated using calorimetric equation. The heat gained by water is equal to the heat lost by iron. Hence, the final temperature is 28 °C.

Calorimetry is an analytical tool used to determine the heat energy absorbed or released by a system. The calorimetric equation connecting the heat energy q with mass m, specific heat capacity c and temperature difference ΔT is given as:

q = m c ΔT

Here, the heat lost by iron = heat gained by water

m of iron = 255.15 g

initial temperature = 816 °C

c = 0.461 J/°C g.

Mass of water = 4000 g

c = 4.18 J/°C g

initial temperature = 23 °C

Let T be the final temperature of the system.

then,

0.461 J/°C g × 255.15 g × (816 - T) = 4.18J/°C g × 4000 g × (T - 23)

117.62 J(816 - T) = 16720 (T - 23)

T = 28°C.

Therefore, the final temperature of the system will be  28°C.

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Answer:

Have 2 filled orbitals and 3 partially filled orbitals.

Explanation:

Hello there!

In this case, according to the given information of the electron configuration for that particle; it is possible for us to infer it has 5 valence electrons, as the electrons on its outermost shell (2). Moreover, we undertand this particle needs three bonds, does not have neither the electron configuration of a noble gas which ends by p⁶ nor that of an alkali earth metal as it ends by s².

Therefore, we infer the correct answer is Have 2 filled orbitals and 3 partially filled orbitals because according to the Hund's rule, the s orbital is fulfilled and the p orbital has 1 electron orbital fulfilled and two partially filled orbitals.

Regards!

Answer:

First you need to convert the cylinder to a boot, then you can successfully compress the water into the tip of the boot, preventing it from busting.

Explanation:

To convert a cylinder to a boot, simply multiply the circumference of the cylinder by 1.3125768927, or 1.31. The .31 is the extra space taken in by the tip of the boot.