Question

The table shows the mass and density of some substances.


Density of Substances
Mass
(g) Density of Iron
(g/cm3) Density of Silver
(g/cm3)
100 7.8 19.3
200 P Q

Part 1: Is the value of Q less than, greater than, or equal to the value of P?
Part 2: Explain your answer for Part 1.

Answer 1

if I'm interpreting this table correctly - P is the density of iron for a 200g mass, and Q is the density of silver, also for 200g, correct?

In that case, remember that density is an intrinsic property. It does *not* change with mass. The 200g densities are equal to 100g densities. Thus, P = 7.8 and Q = 19.3.