Calculate how many grams of NaCl are required to make 100 mL of a 1 M NaCl solution.
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To calculate the number of grams of NaCl required, we need to use the formula:
Number of grams of NaCl = moles of NaCl * molar mass of NaCl
First, let's calculate the number of moles of NaCl in the solution:
moles of NaCl = molarity * volume in liters
Since the volume of the solution is given in milliliters, we need to convert it to liters:
volume in liters = 100 mL / 1000 mL/L = 0.1 L
Now we can calculate the number of moles of NaCl:
moles of NaCl = 1 M * 0.1 L = 0.1 moles
The molar mass of NaCl is 22.99 g/mol for Na plus 35.45 g/mol for Cl:
molar mass of NaCl = 22.99 g/mol + 35.45 g/mol = 58.44 g/mol
Finally, we can calculate the number of grams of NaCl:
Number of grams of NaCl = 0.1 moles * 58.44 g/mol = 5.844 grams
Therefore, 5.844 grams of NaCl are required to make a 100 mL of a 1 M NaCl solution.
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