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vampirchik [111]
3 years ago
5

Anyone no this please i need help to pass next grade

Chemistry
1 answer:
Anastaziya [24]3 years ago
6 0

Exothermic is when heat escapes an object. So the answer should be the last one.

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Which term is the rate at which work is done <br><br><br><br><br><br> Answer: power
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Answer:

Power

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During the reaction, 3.40 μmolμmol of HClHCl are produced. Calculate the final pHpH of the reaction solution. Assume that the HC
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What mass of ch4 is consumed when 587. 9 kj of energy is evolved from the combustion of a mixture of ch4(g) and o2(g)? show the
katen-ka-za [31]

Mass of CH₄ is 10.591 g.

The molar mass is a crucial characteristic of the material that is independent of sample size. The coherent unit of molar mass in the International System of Units (SI) is kg/mol. However, molar masses are usually generally given in g/mol due to historical considerations.

A chemical compound's molar mass is calculated by dividing its mass by the number of moles of the substance that make up the sample.

Δg = 587.9 KJ

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mol CH₄ = Δg / ΔH°

              = 587.9 / 890.3 KJ/ mol

              = 0.6603 mol CH₄

Mass CH₄ = 0.6603 × 16.05 g/mol

                = 10.591 g

Therefore, the mass of  CH₄ is 10.591 g.

Learn more about molar mass here:

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Why should you never heat a test tube that is closed?
Burka [1]
It will explode.... I think
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Help me if you know this pleaseeee
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Explanation:

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