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3 years ago

If 7.4 moles of carbon dioxide is produced in this reaction, how many moles of oxygen gas would be needed?

Chemistry

1 answer:

Nimfa-mama [501]3 years ago

4 0

Answer:

11.6 mol O₂

Explanation:

C₇H₁₆ + 11 O₂ → 7 CO₂ + 8 H₂O

In order to solve this problem we need to convert moles of carbon dioxide (CO₂) into moles of oxygen gas (O₂). To do so we'll use a conversion factor containing the stoichiometric coefficients of the balanced reaction:

7.4 mol CO₂ * $\frac{11molO_2}{7molCO_2}$ = 11.6 mol O₂

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A gas is collected at 30 Celsius and has a pressure of 200 kPa. What pressure would it exert if the temperature changed to 40 Ce

garik1379 [7]

Answer:

$206.6\ \text{kPa}$

Explanation:

$P_1$ = Initial pressure = 200 kPa

$P_2$ = Final pressure

$T_1$ = Initial temperature = $30^{\circ}\text{C}$

$T_2$ = Final temperature = $40^{\circ}\text{C}$

We have the relation

$\dfrac{P_2}{P_1}=\dfrac{T_2}{T_1}\\\Rightarrow P_2=\dfrac{T_2}{T_1}P_1\\\Rightarrow P_2=\dfrac{40+273.15}{30+273.15}\times 200\\\Rightarrow P_2=206.6\ \text{kPa}$

The pressure that would be exerted after the temperature change is $206.6\ \text{kPa}$ .

6 0

3 years ago

Suppose you have a liquid solution containing two components, acetone and nonane. The boiling point of pure acetone is 56 C and

Tom [10]

Answer:

The boiling point is somewhere between 56 and 151 °C

Explanation:

Hello,

In this case, it is possible to compute it via rigorous methods in phase equilibrium by using for example a cubic equation of state to model the vapor phase and a suitable excess Gibbs free energy model for the liquid phase, nonetheless, it is an arduous task. In such a way, since the information about both acetone's and nonane's pure boiling points is given as well as acetone's mole fraction, which points out it is about a binary liquid solution, one could make up the boiling point is somewhere between 56 and 151 °C precising that it should be closer to 151 °C as the mixture is 90% nonane and 10% acetone.

Best regards.

4 0

3 years ago

Pls help me 20 points ty

qaws [65]

Answer:

what do you need help with i cant see it

Explanation:

6 0

3 years ago

Read 2 more answers

Read the scientific question below.

svetlana [45]

If we fertilize a plant, then its height increases fast. Always use if then format

8 0

3 years ago

For the Earth's atmosphere, section number two in the pie graph BEST represents the percentage of A) argon B) oxygen C) nitrogen

larisa86 [58]

-Oxygen

According to Google these are the percentages of the Earths Atmosphere

1 78% - Nitrogen

2 21% - Oxygen

3 0.9% - Argon

4 0.3 - Carbon Dioxide with very small percentage of other elements.

3 0

3 years ago