What is the volume of a gas 35 psi (like your car’s tire might require), if the gas had occupied 30 L at a pressure of 10 psi?

In which environment would primary succession take place? Select 2 options.

kotegsom [21]

Answer:

a cooling lava flow

a deserted mine

Explanation:

7 0

3 years ago

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What is the chemical potential of an element in its standard state? Select the correct answer below: −1.00kJ/mol 0kJ/mol 1.00kJ/

Elenna [48]

Answer:

0 kJ/mol.

Explanation:

Hello,

In this case, since the chemical potential can be represented in terms of the Gibbs free energy of formation:

$\mu = \frac{\Delta _fG}{n}$

Thus, since the Gibbs free energy of formation of an element is zero, the chemical potential is also zero, or just 0 kJ/mol.

Best regards.

4 0

4 years ago

Metamorphic rocks are caused because...

jarptica [38.1K]

Answer: Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet.

Explanation:

6 0

3 years ago

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Predict the element that will have the highest mass percent composition in each compound without doing any calculations. Identif

Andrej [43]

Answer:

Carbon has the highest mass percent

Explanation:

Step 1: Data given

Predict the element that will have the highest mass percent composition in each compound without doing any calculations.

For C3H6O, carbon will have the highest mass percent. The molar mass of of Oxygen and carbon are more or less the same. But we have 3x more Carbon than oxygen.

Identify the element that has the highest mass percent composition in C3H6O .

atomic mass C = 12.01 g/mol

atomic mass O = 16.0 g/mol

atomic mass H = 1.01 g/mol

molar mass C3H6O = 58.08 g/mol

%C = (3*12.01 / 58.08) * 100 %

%C = 62.04%

%O = (15.99 /58.08) *100%

%O = 27.53 %

%H = (6*1.01 / 58.08) * 100%

%H = 10.43

Carbon has the highest mass percent

6 0

3 years ago

Calculate ΔHrxn for the following reaction: C(s) + H2O(g) --> CO(g) + H2(g) Use the following reactions and given ΔH values:

valentina_108 [34]

Answer:

ΔH = 130.5 kJ

Explanation:

Hello,

In this case, by using the Hess law, we compute the enthalpy of the required reaction:

C(s) + H2O(g) --> CO(g) + H2(g)

Thus, the first step is to keep the following reaction unchanged:

C (s) + O2 (g) → CO2 (g), ΔH = -393.5 kJ

Next, we invert and halve this reaction:

2 CO (g) + O2 (g) → 2 CO2 (g), ΔH= -566.0 kJ

So the enthalpy of reaction is inverted and halved:

CO2 (g) → CO (g) + 1/2 O2 (g) ΔH= 283 kJ

Then, we also invert and halve this reaction:

2 H2 (g) + O2 (g) → 2 H2O ΔH= -483.6 kJ

So the enthalpy of reaction is inverted and halved as well:

H2O → H2 (g) + 1/2 O2 (g) ΔH= 241.8 kJ

Finally, we add the three reactions to obtain the required reaction:

= C (s) + O2 (g) + CO2 (g) + H2O → H2 (g) + 1/2 O2 (g) + CO (g) + 1/2 O2 (g) + CO2 (g)

= C (s) + O2 (g) + CO2 (g) + H2O → H2 (g) + O2 (g) + CO (g) + CO2 (g)

= C (s) + H2O → H2 (g) CO (g)

So enthalpy is computed by:

ΔH = -393.5 kJ + 283 kJ + 241.8 kJ

ΔH = 130.5 kJ

Best regards.

5 0

3 years ago