Chem question? 2. a block of material has a volume of 2 m3. it has a mass of 1 × 104 kg. calculate the density of the material sample and express your results in g/cm3 with appropriate scientific notation.

The density (d) is the quotient when mass (m) is divided by the volume (v). It is specified that the densities be in units of g/cm³. So, there is a need to convert first the given mass and volume to proper units. The calculations are shown below,
                      2 m³ x (100 cm / 1 m)³ = 2.0x10^6 cm³
                     1x10^4 kg x (1000 g/ 1 kg) = 1.0x10^7 g

Calculating for density,
                d = m/v = (1.0x10^7 g) / (2.0x10^6 cm³) = 5 g/cm³

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

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