How many moles of each atom in the formula HClO3

H has one mole

Cl has one mole

O has three mole

Explanation:

There is a single Hydrogen, thus there is one mole, this also applies to Cl.

With Oxygen, there are three O's, thus there are three moles of Oxygen.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

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