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storchak [24]
3 years ago
8

What is used to measure the energy in a chemical reaction?

Chemistry
2 answers:
vova2212 [387]3 years ago
5 0

I'm pretty sure it's a calorimeter.

White raven [17]3 years ago
3 0

Answer:

calorimeter

Explanation:

calorimeter

A calorimeter is a device used to measure the amount of heat involved in a chemical or physical process. For example, when an exothermic reaction occurs in solution in a calorimeter, the heat produced by the reaction is absorbed by the solution, which increases its temperature.

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How many grams of 02 are present in 7.49 L of oxygen gas?
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10.70grams

Explanation:

Density of a substance = mass/volume

At STP of a gas (standard temperature and pressure), the density of oxygen gas is 1.429 g/L

Hence, according to this question, in 7.49 L of oxygen gas, there would be:

Using D = m/V

1.429 = m/7.49

m = 1.429g/L × 7.49L

m = 10.70g

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Given: logK=nE∘0.0592 What is the value K for this redox reaction? Zn2+(aq) + 2 Cl−(aq) → Zn(s) + Cl2(
anygoal [31]

<em>K</em> = 2.4 × 10^(-72)

<em>Step 1</em>. Determine the <em>value of n </em>

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∴ <em>n</em> = 2

<em>Step 2</em>. Calculate <em>K</em>

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<em>K</em> = 10^(-71.62) = 2.4 × 10^(-72)

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