# Chemistry

posted by .

In each of the following, determine how much solute (in g or mL) must be added to the correct quantity of water to make the given amount of solution at the correct concentration.

a)KI to make 50.0mL of a 0.50 M solutioon
b)12.0 M HCL to make 500 mL of a 1.0 M HCl
c)Sucrose (C12 H22 O11) to make 1.0 kg of a 5% sucrose (by mass) solution
d)1.0M NaCl to make 100.0 mL of 0.10 M NaCl

• Chemistry -

All of these are done strictly by definition. If you know the definition you should be able to do the problem.
Here is the first one. Try the others on your own.
a)
M = moles/L.
Therefore, moles = M x L
We want 0.50M x 0.050 L = 0.025 moles.
moles = grams/molar mass and we rearrange to grams = moles x molar mass.
0.025 moles x molar mass KI = grams KI.

The others all follows this type solution (no pun intended) although they will vary somewhat depending upon the definition of the solution.

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### chemistry

Which of the following is NOT true for solutes and solvents?
2. ### chemistry

AgNO3 was dissolved in water to make 10mL of solution. Then 3.0mL of that solution was used to make a new solution with a total volume of 1.000L. What was the concentration of the silver ion in the final solution?
3. ### chemistry

A solution is made by adding 5.0 g Na2CO3 * 10H2O to enough water to make a 500 mL solution. what is the molarity. I have: M=mol solute/liter solution = (5/286)/.5 = .035M 286 is what i got for the molar mass of Na2CO3 * 10H2O Is that …
4. ### chemistry

Assuming that the volumes are additive, what volume of water must be added to 35.0mL of 23.0 M HCl to make a solution which is 3.00 M?
5. ### chem

Calculate the final concentration of a. 4.0 L of a 4.0 M HNO3 solution is added to water so that the final volume is 8.0L b. Water is added to 0.35L of a 6.0M KOH solution to make 2.0L of a diluted KOH solution. c.A 20.0 mL sample …
6. ### Chemistry

How do you prepare 600.0mL of 0.48M Al(NO3)3*9H2O?
7. ### Chemistry revision

all these questions I got wrong on my homework today ...I'm trying to find out why and what the correct answers were .. please help How many grams of solute are required to make a 504 mL solution of copper (I) nitrate with a concentration …
8. ### Chemistry LAB 2

Calculate the Molar Enthalpy of Neutralization in kJ/mol of the reaction between a monoprotic acid and a monoprotic base, given the following information: *Make sure you report your answer using the correct sign* The temperature change …
9. ### Chemistry

When 3.10 g of a nonelectrolyte solute is dissolved in water to make 755 mL of solution at 26 °C, the solution exerts an osmotic pressure of 821 torr. What is the molar concentration of the solution?
10. ### Chemistry

When 3.15 g of a nonelectrolyte solute is dissolved in water to make 135 mL of solution at 21 °C, the solution exerts an osmotic pressure of 869 torr. What is the molar mass of the solute?

More Similar Questions