Use the periodic table to determine how many atoms of phosphorus (P) are in a sample that has a mass of 172.90 g.

3.48 × 1021 atoms

1.97 × 1022 atoms

3.36 × 1024 atoms

1.04 × 1026 atoms

the temperature of the gas, in k, not celsius.

the answer is 0.8m.

by: nicholas

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.