What mass of iron(III) chloride contains 1.07 x 1023 chloride ions?

Agas has a volume of 0.7 l at 300 mmhg. what would be the new volume at 900 mmhg

2h2s + 3o2 2so2 + 2h2o which option gives the correct mole ratios? h2s: so2 = 2: 2 and o2: h2o = 3: 2 h2s: so2 = 2: 3 and o2: h2o = 3: 2 h2s: so2 = 4: 4 and o2: h2o = 5: 4 h2s: so2 = 4: 6 and o2: h2o = 4: 4

What does x represent in the formula for the compound xcl4?