If 12.45gm NaCI is dissolved in 115ml of water, what is the density of NaCI?

To find the density of NaCI, we need to know the mass and volume of the substance.

Given:
Mass of NaCI = 12.45 gm
Volume of water = 115 ml

Density is defined as the mass per unit volume. Therefore, we can find the density of NaCI by dividing its mass by its volume.

Density (ρ) = Mass (m) / Volume (V)

Substituting the given values:
Density (ρ) = 12.45 gm / 115 ml

To calculate the density, we need to ensure that the mass and volume have the same units. Let's convert the volume from milliliters (ml) to grams (gm) since the mass is given in grams.

Water has a density of 1 g/ml. Therefore, the volume of water in grams is the same as the volume in milliliters.

Density (ρ) = 12.45 gm / 115 gm

Now we can calculate the density of NaCI.

Density (ρ) = 0.108 gm/ml

Therefore, the density of NaCI is 0.108 gm/ml.