Answer :
(a)The molarity of KCl solution is, 0.9713 mole/L
(b)The molarity of  solution is, 0.00525 mole/L
 solution is, 0.00525 mole/L
(c)The molarity of  solution is, 0.0612 mole/L
 solution is, 0.0612 mole/L
(d)The molarity of  solution is, 7.61 mole/L
 solution is, 7.61 mole/L
(e)The molarity of  solution is, 0.0565 mole/L
 solution is, 0.0565 mole/L
(f)The molarity of  solution is, 0.0113 mole/L
 solution is, 0.0113 mole/L
Explanation :
<u>(a) 1.457 mol of KCl in 1.500 L of solution</u>
Formula used :

Solute is KCl.

The molarity of KCl solution is, 0.9713 mole/L
<u>(b) 0.515 gram of  , in 1.00 L of solution</u>
, in 1.00 L of solution</u>
Formula used :

Solute is 
Molar mass of  = 98 g/mole
 = 98 g/mole

The molarity of  solution is, 0.00525 mole/L
 solution is, 0.00525 mole/L
<u>(c) 20.54 g of  in 1575 mL of solution</u>
 in 1575 mL of solution</u>
Formula used :

Solute is 
Molar mass of  = 213 g/mole
 = 213 g/mole

The molarity of  solution is, 0.0612 mole/L
 solution is, 0.0612 mole/L
<u>(d) 2.76 kg of  in 1.45 L of solution</u>
 in 1.45 L of solution</u>
Formula used :

Solute is 
Molar mass of  = 250 g/mole
 = 250 g/mole

The molarity of  solution is, 7.61 mole/L
 solution is, 7.61 mole/L
<u>(e) 0.005653 mol of  in 10.00 ml of solution</u>
 in 10.00 ml of solution</u>
Formula used :

Solute is  .
.

The molarity of  solution is, 0.0565 mole/L
 solution is, 0.0565 mole/L
<u>(f) 0.000889 g of glycine,  , in 1.05 mL of solution</u>
, in 1.05 mL of solution</u>
Formula used :

Solute is 
Molar mass of  = 75 g/mole
 = 75 g/mole

The molarity of  solution is, 0.0113 mole/L
 solution is, 0.0113 mole/L