Finally:
molarity = 0.500 (mol) / 0.200 (L) = 2.50 mol/L
atomic weight of Na = 22.99 g/mole
atomic weight of Cl = 35.453 g/mole
molecular weight of NaCl = 58.445 g/mole
21.0 g/58.445g/mole = 0.359 moles NaCl
.359moles/.2litres =1.80M
Molarity (M) = mols/liters. In this case:
M = 2.0 moles / (.200) Liters = 10 Molar.
200 milliliters of a .5 M solution will contain .1 moles. 1 liter of a 2.0 M solution has 2 moles, so 50 milliliters of this 2 M solution will have .1 moles.
2.0 mol NaCl / 2.0 Litre = 2.0/2.0 = 1.0 mol/L = 1.0M NaCl
Molarity means moles per litre. Therefore you have to multiply by 5 in converting 200ml to a litre. 2*5 is 10 moles per litre.
Molarity (M) = mols/liters. In this case:
M = 0.2 moles / (.200) Liters = 1 Molar.
10M (nova net)
.13 (Plato)
0.20m
4m
Sodium bromide dissassociates into Na+ and Br- ions when it is dissolved in water.NaBr + H2O = Na+ and Br- aq.
well the calcium bromide solution is less soluble than the sodium bromide..... but the lab has nothing to do with the solubility; so i believe it shouldn't make a difference.
Need moles sodium bromide first. 18.7 grams NaBr (1 mole NaBr/102.89 grams) = 0.1817 moles NaBr =====================Now, Molarity = moles of solute/Liters of solution 0.256 M NaBr = 0.1817 moles NaBr/X Liters Liters = 0.1817/0.256 = 0.7098 Liters -------------------------( you do sigi figis )
Sodium Bromide
4m
From the definition of molarity, one liter of the stated solution contains 0.256 mole of sodium bromide. The gram formula weight of sodium bromide is 102.89; therefore, one liter of the solution contains 0.256 X 102.89 or 26.34 grams. 18.7/26.34 = 0.710, the fraction of a liter that contains 18.7 grams of sodium bromide.
So molarity means moles per litre. but you don't have a litre. if you did you'd have 1000/200 times the moles that you have. 2 moles / 200 x 1000 is 10 moles. As it is per litre, it is 2 molar.
Sodium bromide dissassociates into Na+ and Br- ions when it is dissolved in water.NaBr + H2O = Na+ and Br- aq.
Molarity = moles solute/ Liters solution
Start by looking up atomic masses of Na, N and O. Convert grams to kilograms.
well the calcium bromide solution is less soluble than the sodium bromide..... but the lab has nothing to do with the solubility; so i believe it shouldn't make a difference.
In chemistry, the concentration of a substance in solution is determined by molarity, which is symbolized by "M". This indicates the number of moles of a substance dissolved in one liter of a solvent (usually water). For example: - 1 mole of sodium chloride = 58 grams - If 116 grams of sodium chloride are dissolved in 1 liter of water, then that solution is a 2-molar (2 M) solution of sodium chloride. - If 232 grams of sodium chloride are dissolved in 1 liter of water, then that solution is a 4-molar (4 M) solution of sodium chloride.
molecular chlorine is added to a solution of sodium bromide fine the balance equation and the net ionic equation
This molarity is 0,207 mol.
Molarity = moles of solute/Liters of solution ( 1500 mL = 1.5 Liters ) Molarity = 0.800 moles NaOH/1.5 Liters = 0.533 M sodium hydroxide ...
The molarity is 0,125 M.