Question

a quantity of water is poured into a graduated cylinder, which reads 139 mL. what is the mass of the water in kilograms?​

Answer 1

The mass of water is 0.139 kg

Explanation:

The density of a substance is given by the equation

$\rho = \frac{m}{V}$

where

$\rho$ is the density

m is the mass of the substance

V is its volume

In this problem we have:

V = 139 mL is the volume of water

The density of water is:

$\rho = 1 g/mL$

Solving the equation for m, we find its mass:

$m=\rho V = (1.0)(139)=139 g$

And converting into kilograms,

$m=139 g = 0.139 kg$

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