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How many moles are in 50 grams of CaCO3?
How many moles are in 50 grams of CaCO3?
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Practice Questions
1 question
Q1
How many moles are in 50 grams of CaCO3?
0.5
1
1.25
2
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Molar mass of CaCO3 = 100 g/mol. Number of moles = mass / molar mass = 50 g / 100 g/mol = 0.5 moles.
Questions & Step-by-step Solutions
1 item
Q
Q: How many moles are in 50 grams of CaCO3?
Solution:
Molar mass of CaCO3 = 100 g/mol. Number of moles = mass / molar mass = 50 g / 100 g/mol = 0.5 moles.
Steps: 7
Show Steps
Step 1: Find the molar mass of CaCO3 (calcium carbonate). This is the total mass of one mole of CaCO3.
Step 2: Calculate the molar mass by adding the atomic masses of calcium (Ca), carbon (C), and oxygen (O).
Step 3: The atomic mass of Ca is approximately 40 g/mol, C is approximately 12 g/mol, and O is approximately 16 g/mol. CaCO3 has 1 Ca, 1 C, and 3 O.
Step 4: Calculate the molar mass: 40 g/mol (Ca) + 12 g/mol (C) + 3 * 16 g/mol (O) = 100 g/mol.
Step 5: Use the formula to find the number of moles: Number of moles = mass / molar mass.
Step 6: Substitute the values: Number of moles = 50 g / 100 g/mol.
Step 7: Calculate the result: 50 g / 100 g/mol = 0.5 moles.
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