Question

At STP, a 7.49-gram sample of an element has a volume of 1.65 cubic centimeters. The sample is most likely

(1) Ta (3) Te
(2) Tc (4) Ti

Answer 1

You can identify an element by its density.

`\rho = (m)/(V)`
ρ - density, m - mass, V - volume


`m=7.49 \ g \\ V=1.65 \ cm^3 \\ \\ \rho=(7.49 \ g)/(1.65 \ cm^3) \approx 4.54 \ (g)/(cm^3)`

It's the density of titanium (Ti). The answer is (4).