An unknown liquid has a density of 1.23g/ml. what mass of the unknown liquid in grams will occupy a volume of 31.2ml

Answer is 38.38 g

Explanation;

To find out the mass, we can apply the simple formula,

d = m / v

Where, d is the density of the substance, m is the mass and v is the volume of the substance.

Values of d and v are given as follows;

d = 1.23 g/mL

v = 31.2 mL

m = ?

By applying the formula,

1.23 g/mL = m / 31.2 mL

            m = 1.23 g/mL x 31.2 mL

            m = 38.376 g = 38.38 g

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

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