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3 years ago

Why an increase in temperature increases the reaction rate?

Chemistry

1 answer:

Mariulka [41]3 years ago

4 0

Answer:

Increase in temperature causes the molecules to gain more kinetic energy as heat is supplied to it. These molecules then have higher energy to cross the activation barrier in order to form products, hence increase in temperature increases the rate of reaction

Explanation:

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A rigid container of O has a pressure of 340 kPa at a temperature of 713 K. What is the pressure at 273 K?

tia_tia [17]

Answer:

P₂ = 130.18 kPa

Explanation:

In this case, we need to apply the Gay-Lussack's law assuming that the volume of the container remains constant. If that's the case, then:

P₁/T₁ = P₂/T₂ (1)

From here, we can solve for the Pressure at 273 K:

P₂ = P₁ * T₂ / T₁ (2)

Now, all we need to do is replace the given data and solve for P₂:

P₂ = 340 * 273 / 713

Hope this helps

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3 years ago

How many grams of sodium sulfide can be produced when 45.3 g Na react with 105 g S?

erastova [34]

Balance the equation: 2Na + S --> Na2S
Using the given amount of the reactants in the reaction, calculate the amount of the product:
45.3g Na x (1 mol/22.99 g)= 1.97 mol of Na
105f S x (1 mol/ 32.06g) = 3.28 mol of S
The limiting reactant would be Na:
<span>1.97 mol Na x (1 mol Na2S/ 2 mol Na) x (78.04g/mol) = 76.87g of Na2S produced</span>

8 0

3 years ago

The density of mercury is 13.5g/mL. What is the volume of this liquid if the sample weighs 12.5 pounds?

Mama L [17]

Answer : The volume of liquid is 420 mL.

Explanation :

Density : The mass per unit volume of a substance is known as density.

Formula used:

$\text{Density}=\frac{\text{Mass}}{\text{Volume}}$

As we are given:

Density of mercury = 13.5 g/mL

Mass = 12.5 pounds

First we have to convert mass of sample from pound to gram.

Conversion used:

As, 1 pound = 453.6 g

So, 12.5 pounds = 453.6 × 12.5 g = 5670 g

Now we have to calculate the volume of liquid.

$\text{Density}=\frac{\text{Mass}}{\text{Volume}}$

Now putting all the given values in this formula, we get:

$13.5g/mL=\frac{5670g}{\text{Volume}}$

Volume = 420 mL

Therefore, the volume of liquid is 420 mL.

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3 years ago

What is the formula mass of (NH4)2SO4

Jobisdone [24]

Answer:

132.17 amu.

Explanation:

6 0

3 years ago

How many molecules of ethane ( C2H6) are present in 0.197g of C2H6?

gayaneshka [121]

C2H6/C2H6=1

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3 years ago