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How many moles are in 200 grams of H2SO4?

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Question: How many moles are in 200 grams of H2SO4?

Options:

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Correct Answer: 2

Solution: 

Molar mass of H2SO4 = 2 + 32 + 16*4 = 98 g/mol. Number of moles = 200 g / 98 g/mol = 2.04 moles.

How many moles are in 200 grams of H2SO4?

Practice Questions

Q1
How many moles are in 200 grams of H2SO4?
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Questions & Step-by-Step Solutions

How many moles are in 200 grams of H2SO4?
  • Step 1: Identify the chemical formula of sulfuric acid, which is H2SO4.
  • Step 2: Calculate the molar mass of H2SO4 by adding the atomic masses of its elements: 2 hydrogen (H), 1 sulfur (S), and 4 oxygen (O).
  • Step 3: The atomic mass of hydrogen (H) is approximately 1 g/mol, sulfur (S) is approximately 32 g/mol, and oxygen (O) is approximately 16 g/mol.
  • Step 4: Calculate the total mass: 2 * 1 g/mol (for H) + 32 g/mol (for S) + 4 * 16 g/mol (for O) = 2 + 32 + 64 = 98 g/mol.
  • Step 5: Use the formula for calculating moles: Number of moles = mass (in grams) / molar mass (in g/mol).
  • Step 6: Substitute the values: Number of moles = 200 g / 98 g/mol.
  • Step 7: Perform the division: 200 / 98 = approximately 2.04 moles.
  • Molar Mass Calculation – Understanding how to calculate the molar mass of a compound by summing the atomic masses of its constituent elements.
  • Mole Concept – Applying the mole concept to convert grams of a substance to moles using its molar mass.
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