4FeCr207 + 8K2CO3 + 02 2Fe2O3 + 8K2CrO4 + 8C02 How many grams of FeCr207 are required to produce 3.44 g of CO2?

What is the formula that this ionic compounds could form sr2+p3-o2-

Compare and contrast physical changes with chemical changes.

Which aqueous solution of ki freezes at the lowest temperature? 1) 1 mol of ki in 500. g of water 2) 2 mol of ki in 500. g of water 3) 1 mol of ki in 1000. g of water 4) 2 mol of ki in 1000. g of water