Chemistry, 20.05.2021 14:00, Angeldelissa
PLEASE PLEASE PLEASE HEL I NEED HELP ON A CHEMISTRY TEST
ALSO PLEASE SHOW ALL WORK AND NO LINKS THANKS
18. Calculate the molarity of each solution below. Show ALL work, units and labels.
a) 1.23 g Na2SO4 in 1.00 L of solution
b) 2.34 g CaCl2 in 0.750 L of solution
c) 45.60 g Pb(NO3)2 in 900.0 mL of solution
19. Calculate the mass of solid is needed to prepare the volume and molarity of each solution below. Show ALL work, units and labels.
a) 750. mL of 0.500 M Na2SO4
b) 500. mL of 1.50 M CaCl2
c) 10.00 L of 1.500 M Pb(NO3)2
20. Calculate the number of milliliters of solution that contain the designated number of grams of solute. Show ALL work, units and labels.
a) 2.48 M Na2SO4 containing 31.2 g solute
b) 3.69 M CaCl2 containing 23.1 g solute
c) 0.6543 M Pb(NO3)2 containing 1.098 g solute
Answers: 2
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