Answer:
0.2402 M
Explanation:
0.945 L sol contains = 0.227 moles
1 L sol will contain = (0.227/0.945)*1 = 0.2402 moles
Molarity = 0.2402 moles/L or M
261.162 grams. Use the equation n=M÷Mr.
the answer is b it is composed of protons and neutrons.
hope this helped