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How many grams are in 0.25 moles of KCl?
How many grams are in 0.25 moles of KCl?
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Practice Questions
1 question
Q1
How many grams are in 0.25 moles of KCl?
35 g
70 g
17.5 g
140 g
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Molar mass of KCl = 39 + 35.5 = 74.5 g/mol. Mass = moles x molar mass = 0.25 moles x 74.5 g/mol = 18.625 g.
Questions & Step-by-step Solutions
1 item
Q
Q: How many grams are in 0.25 moles of KCl?
Solution:
Molar mass of KCl = 39 + 35.5 = 74.5 g/mol. Mass = moles x molar mass = 0.25 moles x 74.5 g/mol = 18.625 g.
Steps: 5
Show Steps
Step 1: Find the molar mass of KCl. K (potassium) has a mass of 39 grams/mol and Cl (chlorine) has a mass of 35.5 grams/mol.
Step 2: Add the masses of K and Cl together: 39 g/mol + 35.5 g/mol = 74.5 g/mol.
Step 3: Use the formula to find mass: Mass = moles x molar mass.
Step 4: Substitute the values into the formula: Mass = 0.25 moles x 74.5 g/mol.
Step 5: Calculate the mass: 0.25 x 74.5 = 18.625 grams.
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