Empirical formula of perchloroethylene given that a 2.58−g sample yields 1.37 g CO2

Which of these reactions are redox reactions? check all that apply. cd + hcl → cdcl2  + h2cucl2  + na2s → 2nacl + cuscaco3  → cao + co2          2zns + 3o2  → 2zno + 2so2          ch4  + 2o2  → co2  + 2h2o

Rank the following four acids in order of increasing bronsted acidity : h2f+ , ch3oh, (ch3)2oh+ , ch3sh2+

The molar mass of iron(fe) is 55.8 g/mol. what is the mass in grams of 2.25 moles of iron?