what is the molarity of 820 ml of Kl solution that contains 36.52 g of Kl? plz help me
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The formula is molarity (M) = moles / liters
molarity (M) = ?
1/ mass = 36.52 g of KCl (you need to find the mole)
mole = mass / Molar mass
Molar mass of KCl:
K = 39.10 g/mol
Cl = 35.45 g/mol
Add K and Cl together: 39.10 + 35.45 = 74.55 g/mol
mole = 36.52 g of KCl / 74.55 g/mol
mole = 0.489 mol of KCl
2/ Volume = 820 mL ( you need to convert to the l)
820 / 1000 = 0.82 L
= M = mol / L
M = 0.489 mol / 0.82 L
M = 0.59 mol/L
molarity (M) = ?
1/ mass = 36.52 g of KCl (you need to find the mole)
mole = mass / Molar mass
Molar mass of KCl:
K = 39.10 g/mol
Cl = 35.45 g/mol
Add K and Cl together: 39.10 + 35.45 = 74.55 g/mol
mole = 36.52 g of KCl / 74.55 g/mol
mole = 0.489 mol of KCl
2/ Volume = 820 mL ( you need to convert to the l)
820 / 1000 = 0.82 L
= M = mol / L
M = 0.489 mol / 0.82 L
M = 0.59 mol/L
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