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Calculate the concentration of sodium sulphate (na2s04) in parts per billion (ppb) if 5 g ofna2s04 was dissolved in 10 kg of solution. Na: 22.99, S:32.06, 0:16.00 g/mol
Accepted Answer
Concentration of Sodium Sulphate (Na2SO4)
Step 1: Calculate the molar mass of Na2SO4
Na2SO4 = 2(22.99 g/mol) + 32.06 g/mol + 4(16.00 g/mol)
= 142.04 g/mol
Step 2: Convert 5 g of Na2SO4 to moles
Moles of Na2SO4 = 5 g / 142.04 g/mol
= 0.0352 moles
Step 3: Convert 10 kg of solution to liters
10 kg = 10,000 g
= 10,000 g / 1 g/mL
= 10,000 mL
= 10 L
Step 4: Calculate the concentration in parts per billion (ppb)
ppb = (Moles of Na2SO4 / Volume of solution in L) x 10^9
= (0.0352 moles / 10 L) x 10^9
= 3520 ppb
Therefore, the concentration of sodium sulphate (Na2SO4) in parts per billion (ppb) is 3520 ppb.
Step 1: Calculate the molar mass of Na2SO4
Na2SO4 = 2(22.99 g/mol) + 32.06 g/mol + 4(16.00 g/mol)
= 142.04 g/mol
Step 2: Convert 5 g of Na2SO4 to moles
Moles of Na2SO4 = 5 g / 142.04 g/mol
= 0.0352 moles
Step 3: Convert 10 kg of solution to liters
10 kg = 10,000 g
= 10,000 g / 1 g/mL
= 10,000 mL
= 10 L
Step 4: Calculate the concentration in parts per billion (ppb)
ppb = (Moles of Na2SO4 / Volume of solution in L) x 10^9
= (0.0352 moles / 10 L) x 10^9
= 3520 ppb
Therefore, the concentration of sodium sulphate (Na2SO4) in parts per billion (ppb) is 3520 ppb.
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