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Suppose you have a 100-gram sample of each of the following compounds. Which sample contains the largest number of moles of compound?

chromium(III) chloride
ammonia
magnesium chloride
phosphoric acid
potassium chloride
nitrogen trioxide
methane
propane
lithium chlorate

Respuesta :

Answer:

The sample with the largest amount of moles compound is methane, 6.234 moles

Explanation:

Step 1: Data given

Mass = 100 gram

Molar mass of chromium(III) chloride = 158.36 g/mol

Molar mass of ammonia = 17.03 g/mol

Molar mass of Magnesium chloride = 95.21 g/mol

Molar mass of phosphoric acid = 97.99 g/mol

Molar mass of potassium chloride = 74.55 g/mol

Molar mass of nitrogen trioxide = 76.01 g/mol

Molar mass of methane = 16.04 g/mol

Molar mass of propane = 44.1 g/mol

Molar mass of lithium chlorate =  90.39 g/mol

Step 2: Calculate moles

Moles = mass / molar mass

moles chromium(III) chloride = 100.0 grams / 158.36 g/mol = 0.6315 moles

moles ammonia = 100.0 grams / 17.03 g/mol = 5.872 moles

moles magnesium chloride = 100.0 grams / 95.21 g/mol = 1.050 moles

moles phosphoric acid = 100.0 grams / 97.99 g/mol = 1.021 moles

moles nitrogen trioxide = 100.0 grams / 76.01 g/mol = 1.316 moles

moles methane = 100.0 grams / 16.04 g/mol = 6.234 moles

moles propane = 100.0 grams / 44.1 g/mol = 2.268 moles

moles lithium chlorate = 100.0 grams / 90,39 = 1.106 moles

The sample with the largest amount of moles compound is methane, 6.234 moles

The given sample that contains the largest amount of number of moles is methane, 6.234 moles.

Given:

Mass = 100 gram

We know,

Molar mass of chromium(III) chloride = 158.36 g/mol

Molar mass of ammonia = 17.03 g/mol

Molar mass of Magnesium chloride = 95.21 g/mol

Molar mass of phosphoric acid = 97.99 g/mol

Molar mass of potassium chloride = 74.55 g/mol

Molar mass of nitrogen trioxide = 76.01 g/mol

Molar mass of methane = 16.04 g/mol

Molar mass of propane = 44.1 g/mol

Molar mass of lithium chlorate =  90.39 g/mol

To Calculate moles:

[tex]Moles = \frac{\text{Mass}}{\text{Molar mass}}[/tex]

Moles of chromium(III) chloride = 100.0 grams / 158.36 g/mol = 0.6315 moles

Moles of ammonia = 100.0 grams / 17.03 g/mol = 5.872 moles

Moles of magnesium chloride = 100.0 grams / 95.21 g/mol = 1.050 moles

Moles of phosphoric acid = 100.0 grams / 97.99 g/mol = 1.021 moles

Moles of nitrogen trioxide = 100.0 grams / 76.01 g/mol = 1.316 moles

Moles of methane = 100.0 grams / 16.04 g/mol = 6.234 moles

Moles of propane = 100.0 grams / 44.1 g/mol = 2.268 moles

Moles of lithium chlorate = 100.0 grams / 90,39 = 1.106 moles

 

The sample with the largest amount of moles compound is methane having 6.234 moles.

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