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How many grams of NaOH are needed to prepare 0.5 moles of NaOH solution? (Molar
How many grams of NaOH are needed to prepare 0.5 moles of NaOH solution? (Molar mass of NaOH = 40 g/mol)
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Practice Questions
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Q1
How many grams of NaOH are needed to prepare 0.5 moles of NaOH solution? (Molar mass of NaOH = 40 g/mol)
20 g
40 g
10 g
30 g
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To find the mass, use the formula: mass = moles × molar mass. Thus, 0.5 moles × 40 g/mol = 20 g.
Questions & Step-by-step Solutions
1 item
Q
Q: How many grams of NaOH are needed to prepare 0.5 moles of NaOH solution? (Molar mass of NaOH = 40 g/mol)
Solution:
To find the mass, use the formula: mass = moles × molar mass. Thus, 0.5 moles × 40 g/mol = 20 g.
Steps: 5
Show Steps
Step 1: Identify the number of moles of NaOH you need, which is 0.5 moles.
Step 2: Find the molar mass of NaOH, which is given as 40 g/mol.
Step 3: Use the formula to calculate mass: mass = moles × molar mass.
Step 4: Substitute the values into the formula: mass = 0.5 moles × 40 g/mol.
Step 5: Calculate the result: 0.5 × 40 = 20 grams.
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