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3 years ago

Neutrons _____.

Chemistry

2 answers:

Roman55 [17]3 years ago

8 0

I know the answer is B, because i just had a test. Thanks and have a great day.

tankabanditka [31]3 years ago

6 0

Are found in the nucleus.

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The reaction O3 + NO → O2 + NO2 has Ea = 10.7 kJ/mole and ΔH = – 199.8 kJ/mole. What is the activation energy for the following

inysia [295]

Answer:

Ea = 210.5kJ/mole

Explanation:

When the reaction:

O3 + NO → O2 + NO2

Occurs, requires 10.7kJ/mole and releases -199.8kJ/mole.

For the forward reaction:

O2 + NO2 → O3 + NO

The Ea is the sum of Ea of the forward reaction and - ΔH, that is:

Ea = Ea - (-ΔH)

Ea = 10.7kJ/mol - (-199.8kJ/mol)

Ea = 210.5kJ/mole

4 0

3 years ago

6. What is the pressure of 0.60 moles of a gas if its volume is 10.0 liters at 35.0°C?

denis-greek [22]

Answer: The pressure inside the cylinder will be 1.5 atm. The pressure can be calculated using the Ideal Gas Equation which relates the pressure, volume, temperature, and amount of gas to each other.

Further Explanation

The Ideal Gas Equation is:

$PV = nRT$

where:

P - pressure (in atm)

V - volume (in L)

n - amount of gas (in moles)

R - universal gas constant $0.08206 \frac{L-atm}{mol-K}$

T - temperature (in K)

In the problem, we are given the values:

P = ?

V = 10.0 L (3 significant figures)

n = 0.60 moles ( 2 significant figures)

T = 35.0 degrees Celsius (3 significant figures)

We need to convert the temperature to Kelvin before we can use the Ideal Gas Equation. The formula to convert from degree Celsius to Kelvin is:

$Temperature \ in \ Kelvin = Temperature\ in \ Celsius \ + \ 273.15$

Therefore, for this problem,

$Temperature\ in \ K = 35.0 +273.15\\Temperature\ in \ K = 308.15$

Solving for P using the Ideal Gas Equation:

$P = \frac{nRT}{V} \\P = \frac{(0.60\ mol) \ (0.08206 \ \frac{L-atm}{mol - K}) \ (308.15\ K) \ }{10.0 \ L} \\P = 1.51\ atm$

The least number of significant figures is 2, therefore, the final answer must have only 2 significant figures.

Learn More

1. Learn more about Boyle's Law brainly.com/question/1437490

2. Learn more about Charles' Law brainly.com/question/1421697

3. Learn more about Avogadro's Law brainly.com/question/1964205

Keywords: Ideal Gas Law, Gas Pressure

7 0

4 years ago

The blood carries nutrients to where they are needed. True False

AfilCa [17]

Answer:

True

Explanation:

8 0

3 years ago

Read 2 more answers

How many moles are in 82 g of water?

guajiro [1.7K]

Take 82 grams and divide it by the gfm of water which is 18 g/mole...(82g)/(18.0g/mole)=4.555 -> the answer is 4.6 moles

4 0

3 years ago

If you could place a piece of solid silver into a container of liquid silver, would it float or sink? Explain your answer.

8_murik_8 [283]

Liquid silver is less dense than solid silver, so the solid silver would sink

7 0

3 years ago