Determine the number of moles of H in each sample. A) 4.63 mol H2O
B)9.08 mol NH3
C) 0.110 mol N2H4
D)35.4 mol C10H22

What semimetal can form four single covalent bonds.

If the element whose electric configuration ends in the d sublevel, the element is calssified as? a.inner transition b.noble gases c.representative d. transition

Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?