In the laboratory you are asked to make a 0.355 m potassium carbonate solution using 255 grams of water. How many grams of potassium carbonate should you add? grams.

10

please do not just add both together. I need to find the grams of water in the soulution

Chlorine bleach is a solution containing sodium hypochlorite and water.  The typical bottle of bleach has a concentration of 5.5% mass by volume of sodium hypochlorite.  Determine the volume of bleach that will contain 3.25g of sodium hypochlorite.

A solution contains 8.5 g of NaCl in 900 ml, what is the concentration in mM?

You need to dilute a solution of 5.78 M sulfuric acid. You need the dilute solution to be 0.75 M and only need 133. mL of it. How many mL of the concentrated solution are needed? mL

What is the mass percent of 60 g NaCl in a 200-g solution? Express your percent as a decimal.

You have a concentrated stock solution of 5 M NAOH and want to use it to produce a 300 mL solution of 3 M NaOH. What volume of water and stock solutions will you measure out to make this new solution? O a. 200 mL of water, 100 mL of NAOH stock O b. 100 mL of water, 200 mL of NaOH stock O c. 120 mL of water, 180 mL of NAOH stock d. 150 mL of water, 150 mL of NaOH stock

The lab instructor needs to prepare 15 sets of solutions for a chemistry lab.  Each set must have 70.0 cm3 of 0.200M magnesium nitrate.  What mass of magnesium nitrate is required to prepare enough solution for the class?

A solution is made using 200.0 mL of methanol (density 0.7920 g/mL) and 775.1 mL of water (density 1.000 g/mL). What is the mass percent of the methanol?