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What is the number of moles in 10 grams of Na?
What is the number of moles in 10 grams of Na?
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Practice Questions
1 question
Q1
What is the number of moles in 10 grams of Na?
0.43
0.22
0.5
0.1
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Molar mass of Na = 23 g/mol. Number of moles = mass / molar mass = 10 g / 23 g/mol = 0.43 moles.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the number of moles in 10 grams of Na?
Solution:
Molar mass of Na = 23 g/mol. Number of moles = mass / molar mass = 10 g / 23 g/mol = 0.43 moles.
Steps: 7
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Step 1: Identify the substance. In this case, we are working with sodium (Na).
Step 2: Find the molar mass of sodium (Na). The molar mass is 23 grams per mole (g/mol).
Step 3: Write down the mass you have. Here, the mass is 10 grams.
Step 4: Use the formula to calculate the number of moles. The formula is: Number of moles = mass / molar mass.
Step 5: Plug in the values into the formula: Number of moles = 10 g / 23 g/mol.
Step 6: Perform the division: 10 divided by 23 equals approximately 0.43.
Step 7: Conclude that there are about 0.43 moles of sodium in 10 grams.
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