a compound contains only hydrogen and carbon. 1.17g of the compound takes up a volume of 400 at standard temperature and pressure. calculate the molar mass of the compound.

How many moles of al3+ ions are in 1.25 moles of al2o3

The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 × 10 – 5 m/s 2 0.076 0.060 2.8 × 10 – 5 m/s 3 0.076 0.030 1.4 × 10 – 5 m/s the rate law for this reaction must be:

What is the significance sodium hydroxide and hydrochloric acid