LizzBizz4280 LizzBizz4280

19-12-2022
Chemistry

Answered

The reaction of methane(g) with water(g) to form hydrogen(g) and carbon monoxide(g) proceeds as follows:
CH4(g) + H2O(g) 3 H2(g) + CO(g)
When 5.77 grams of CH4(g) react with sufficient H2O(g) , 74.1 kJ of energy are absorbed .
What is the value of H for the chemical equation given?
ΔHrxn = ______ kJ

Answer :

kjuli1766 kjuli1766

22-12-2022

The value of H for the chemical is ΔHrxn = 205.26kJ.

Calculation:

Mass of methane = 5.77g

Molar mass of methane = 16g/mol

Moles of methane reacted = 5.77g÷16g/mol = 0.361 moles

The energy released by 5.77g methane = 74.1kJ

∆Hrxn = energy absorbed by 1 mole of methane

= 74.1 kJ ÷ 0.361moles = 205.26 kJ

Molecular weight is the mass of a particular molecule and is measured in Daltons. Different molecules of the same compound can have different molecular weights because they contain different isotopes of the element. The molar mass of a substance is the mass in grams of one mole of the substance.

The molar mass of a substance can be obtained by adding the molar masses of the atomic components. The calculated molar mass can then be used to convert the mass and number of moles of the substance. Use the chemical formula to find the number of atoms for each element in the compound.

Learn more about Molar Mass here:- https://brainly.com/question/837939

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