please answrr all 4

A sample of Ca weighs 59.9 grams. Will a sample of He that contains the same number of atoms weigh more or less than 59.9 grams? A sample of He weighs less than 59.9 grams. A sample of He weighs more than 59.9 grams. Calculate the mass of a sample of He that contains the same number of atoms. Mass =gHe A sample of dichlorodibromosilane, SiCl2Br2, contains 0.0456 mol of the compound. What is the mass of the sample, in grams? 9 A sample of chloroethane, C2H5Cl, has a mass of 16.3g. What amount, in moles, does this mass represent? mol \begin{tabular}{|c|c|c|c|c|c|} \hline Mass of Sample & Moles of Sample & \\ \hline 4.81gC6H6 & & \\ g & 0.298molHH2O & \\ g & & 2.331022 molecules CO2 \\ \hline \end{tabular}