To make a 4.00 M solution, how many moles of solute will be needed if 12.0 liters of solution are required?
A: 6 mol
B: 12 mol
C: 48 mol
D: 120 mol

C

Explanation:

Molarity=number of moles/volume

Hence:

Moles required=Molarity×volume

=4mol/L×12L=48moles

Hint:As L(litre will cancel out))

Answer is C

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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the answer is learned