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How many moles are in 88 grams of CH4?

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Question: How many moles are in 88 grams of CH4?

Options:

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Correct Answer: 2

Solution: 

Molar mass of CH4 = 12 + 4*1 = 16 g/mol. Number of moles = mass/molar mass = 88 g / 16 g/mol = 5.5 moles.

How many moles are in 88 grams of CH4?

Practice Questions

Q1
How many moles are in 88 grams of CH4?
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Questions & Step-by-Step Solutions

How many moles are in 88 grams of CH4?
  • Step 1: Identify the chemical formula of the substance. In this case, it is CH4 (methane).
  • Step 2: Calculate the molar mass of CH4. Carbon (C) has a mass of 12 grams/mol and Hydrogen (H) has a mass of 1 gram/mol. CH4 has 1 carbon and 4 hydrogens.
  • Step 3: Calculate the total mass of CH4: 12 g/mol (for C) + 4 * 1 g/mol (for H) = 12 g/mol + 4 g/mol = 16 g/mol.
  • Step 4: Use the formula to find the number of moles: Number of moles = mass / molar mass.
  • Step 5: Substitute the values: Number of moles = 88 grams / 16 g/mol.
  • Step 6: Perform the division: 88 / 16 = 5.5 moles.
  • Molar Mass Calculation – Understanding how to calculate the molar mass of a compound by summing the atomic masses of its constituent elements.
  • Moles Calculation – Applying the formula for calculating the number of moles from mass and molar mass.
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