# Chemistry

posted by .

Consider 125 mL of 0.110 M MgCl2 solution.
a. How many moles of MgCl2 are contained in 125 mL of 0.0110 M MgCl2?
b. What is the concentration of Mg2+ ion?
c. What is the concentration of Cl- ion?

• Chemistry -

moles MgCl2 = M x L = ??
b. Since there is 1 atom Mg per molecule of MgCl2, the concn Mg = concn MgCl2.
c. Since there are two atoms Cl per molecule of MgCl2, the concn of Cl ions is twice that of MgCl2 or Mg.

## Similar Questions

1. ### chemistry

A 4.691 g sample of MgCl2 is dissolved in enough water to give 750. mL of solution. What is the magnesium ion concentration in this solution?
2. ### chemistry

Determine the chloride ion concentration in a solution containing 50.0 g MgCl2 dissolved in 1500 mL of solution. a. 0.350 M b. 0.700 M c. 1.40 M d. 3.17 M e. 6.34 M
3. ### Chemistry

How many milliliters (ml) of 5 M MgCl2 must be added to 25 ml of a 0.5 M MgCl2 solution to produce 1500 ml with a final MgCl2 concentration = 1.75 M?
4. ### Chemistry

A 4.379 g sample of MgCl2 is dissolved in enough water to give 750.0 mL of solution. What is the chloride ion concentration in this solution?
5. ### Chemistry

In order to make 500.0mL of a 1.835 M MgCl2 solution, then _______g of MgCl2 is needed. Moles of MgCl2= (1.835M)(0.5L)=0.9175mol Molecular Weight of MgCl2= 95.211 g/mol (0.9175mol MgCl2)(95.211 g/mol)= 87.36g of MgCl2 Did I do this …
6. ### Science

what is the concentration (M) of a MgCl2 solution prepared by dissolving 7.2 g of MgCl2 in sufficient water to give 362 mL of solution?
7. ### Chemistry

A 1.0-g sample of MgCl2 produced a 10.00C increase in a calorimeter charged with 40.0mL of deionized water. The specific heat is of MgCl2 is 0.750J/C*g. What is the value of delta(s)H for MgCl2?
8. ### Chemistry

A 1.0-g sample of MgCl2 produced a 10.00C increase in a calorimeter charged with 40.0mL of deionized water. The specific heat is of MgCl2 is 0.750J/C*g. What is the value of delta(s)H for MgCl2?
9. ### Chemistry

The following replicate values were reported for the concentration of magnesium chloride, MgCl2, in mol/L. What value should be reported as the mean concentration of the chloride ion, Cl-, converted to ppm?
10. ### science

The following replicate values were reported for the concentration of magnesium chloride, MgCl2, in mol/L. What value should be reported as the mean concentration of the chloride ion, Cl, converted to ppm?

More Similar Questions