Question

a) Calculate the molarity of a solution prepared by dissolving 12.1 g of Na2CrO4 in enough water to produce a solution with a volume of 760. mL . b) How many moles of KBr are present in 130. mL of a 0.120 M solution? c) How many milliliters of 6.0 M HCl solution are needed to obtain 0.20 mol of HCl?

Name: a calculate the molarity of a solution prepared by dissolving 121 g of na2cro4 in enough water to produce a solution with a volume of 760 ml b how many moles of kbr are present in 130 ml of 27124
Uploaded: 2022-05-13T21:03:52-08:00
Duration: 1 min 51 s
Channel: Ronald Prasad
Description: a calculate the molarity of a solution prepared by dissolving 121 g of na2cro4 in enough water to produce a solution with a volume of 760 ml b how many moles of kbr are present in 130 ml of 27124

          a) Calculate the molarity of a solution prepared by dissolving
12.1 g of Na2CrO4 in enough water to produce a
solution with a volume of 760. mL .
b) How many moles of KBr are present in
130. mL of a 0.120 M solution?
c) How many milliliters of 6.0 M HCl solution are
needed to obtain 0.20 mol of HCl?

Added by Toni J.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Ronald Prasad

05/13/2022

Step 1

Given: - Mass of Na2CrO4 = 12.1 g - Molar mass of Na2CrO4 = 161.97 g/mol - Volume of solution = 760 mL = 0.760 L Moles of Na2CrO4 = Mass / Molar mass Moles of Na2CrO4 = 12.1 g / 161.97 g/mol Moles of Na2CrO4 = 0.0747 mol Molarity (M) = Moles / Volume Molarity Show more…

Show all steps

Thanks for your feedback!

a) Calculate the molarity of a solution prepared by dissolving 12.1 g of Na2CrO4 in enough water to produce a solution with a volume of 760. mL . b) How many moles of KBr are present in 130. mL of a 0.120 M solution? c) How many milliliters of 6.0 M HCl solution are needed to obtain 0.20 mol of HCl?