Adding helium to a balloon increased its volume from 790.8 mL to 1.860 L. If the final number of moles of helium in the balloon is 15.3 mol, what was the initial number of moles of helium in the balloon

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

1. combine iron and copper (ii) sulfate solution. (hint: iron will form the iron (iii) ion) fe + cuso4 → 2. combine lead (ii) nitrate and potassium iodide solutions. pb(no3)2+ kl → 3. combine magnesium metal and hydrochloric acid solution. mg + hcl → 4. electrolysis (splitting) of water. h2o → 5. burning magnesium. mg + o2 →

Which statement names the physical property of wood a. wood is softer than coal b. wood does not rust c. wood can rot d. wood can burn