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kkurt [141]
4 years ago
9

Which of the following is true?

Chemistry
1 answer:
Softa [21]4 years ago
3 0

Answer: 2nd one

Explanation: asked my teacher

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Based on their activation energies and energy changes and assuming that all collision factors are the same, which of the followi
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b is fastest, having the lowest activation energy (35 kJ) and is an exothermic reaction, releasing energy in the form of heat

c is slowest, having the highest activation energy (55 kJ) and is an endothermic reaction, taking in energy from its surroundings

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3 years ago
What is the concentration of a solution?​
Nimfa-mama [501]

The concentration of a substance is the quantity of solute present in a given quantity of solution.

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3 years ago
If 14 moles of Oxygen burn how many moles of water are created? *
andrey2020 [161]

Answer:

A) 12 mol H2O.

Explanation:

Hello,

In this case, for the given reaction:

2C_2H_6+7O_2\rightarrow 4CO_2 + 6 H_2O

We notice that oxygen is in a 7:6 molar relationship with water, for that reason, the resulting moles of water turn out:

n_{H_2O}=14molO_2*\frac{6molH_2O}{7molO_2} \\\\n_{H_2O}=12molH_2O

Thus, the answer is A) 12 mol H2O.

Best regards.

6 0
3 years ago
A glass laboratory flask is filled with gas at 24 ∘C and 0.95 atm pressure, sealed, and then heated to 104 ∘C. What is the press
Elan Coil [88]

The pressure inside the flask on heating it is given as 1.21 atm.

<u>Explanation:</u>

As per Guy Lussac's law, the pressure of any concealed volume of gas particles will be directly proportional to the temperature of the container of the gas particles.

So P ∝ T

To convert celsius to kelvin, add 273.15 to the temperature value in celsius

Since, here the initial temperature of the flask is given as 24°C, so in kelvin it will be 297.15 K. Similarly, the final temperature is said to be 104°C which will be equal to 377.15 K. Then the final pressure will be increased as there is increase in temperature. So, the final pressure inside the flask can be obtained as

\frac{P_{1} }{T_{1} } = \frac{P_{2} }{T_{2} }

P_{2} = \frac{P_{1} }{T_{1} } \times T_{2} =\frac{0.95}{297.15} \times 377.15 =1.21\ atm

So, the pressure inside the flask on heating it is given as 1.21 atm.

3 0
4 years ago
What most likely happens when water vapor cools? A. It changes into gas. B. It changes into liquid. C. Its temperature increases
GREYUIT [131]
B- it changes into liquid. hope this helps

3 0
4 years ago
Read 2 more answers
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