How many co2 molecules in in 0.0180 moles of co2

Becquerel expected to find ( he developed the photographic plate that had sun-exposed minerals on top of it. becquerel expected to find ( he developed the photographic plate that had been in the closed drawer.

What element breaks down into yttrium-90?

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.