# chemistry

posted by .

calculate the molality of one molarity solution of sodium nitrare. the density of solution is 1.25g cm cube.

• chemistry -

molality = moles/kg solvent
M = moles/L = 1 mole NaNO3/L soln.

The mass of 1000 mL =
1000 x 1.25 g/mL = 1250 grams.
1 mole NaNO3 = 85 grams (approximately--you need to do it more accurately).
1250 = mass soln
85 = mass NaNO3
----
1,165 grams H2O or 1.165 kg solvent.
m = 1 mole/1.165 kg = 0.858m
Check my work.

## Similar Questions

1. ### chemistry

A solution of HCI has a density of 1.18 g/ml and is 36% (m/m). what is the molarity and molality of this solution?
2. ### chemistry

calculate the molality of one molarity solution of sodium nitrare. the density of solution is 1.25g cm cube.

4. ### Chemistry

Sodium metal dissolves in liquid mercury to form a solution called a sodium amalgam. The densities of Na(s) and Hg(l) are 0.97 g/cm3 and 13.6 g/cm3, respectively. A sodium amalgam is made by dissolving 1.0 cm3 Na(s) in 20.0 cm3 Hg(l). …
5. ### Chmistry

Sodium metal dissolves in liquid mercury to form a solution called a sodium amalgam. The densities of Na(s) and Hg(l) are 0.97 g/cm3 and 13.6 g/cm3, respectively. A sodium amalgam is made by dissolving 1.0 cm3 Na(s) in 20.0 cm3 Hg(l). …
6. ### chemistry

An aqueous solution is made using 137g of diluted to a total solution volume of 1.30L .Calculate the molarity.molality and mass percent of solution.*assume a density of 1.08g/ml for the solution..
7. ### chemistry

100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density is 1.25g/ml 50ml of 20.8% bacl2 and 100ml of 9.8% h2s04 solutions are mixed. Molarity …
8. ### chemistry Thank a lot help

100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density 1.25g/ml. 50ml of 20.8% bacl2 and 100ml of 9.8% h2s04 solution are mixed. Molarity …
9. ### chemistry

a solution is made by dissolving 25 g NaCl in enough water to make 1.0 L solution. Assume that density of the solution is 1.0 g/mL. calculate the mass percent, molarity, molality, and mole fraction of NaCl. whats wrong 25 g NaCl 1.0 …
10. ### chemistry

a solution is made by dissolving 25 g NaCl in enough water to make 1.0 L solution. Assume that density of the solution is 1.0 g/mL. calculate the mass percent, molarity, molality, and mole fraction of NaCl. help please 25g/58.44g NaCl=.428 …

More Similar Questions