Yehuda which is a valid mole ratio from the equation which is balanced: 2fe2o3+3c yields 4fe + 3co2?

two moles of f e two o three over four moles of f e

four moles of c over three moles of f e

two moles of f e two o three over four moles of c

three moles of c over four moles of c o two

Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2

Which of these describes how heat is transferred by convection* a. sunlight travels through space without the aid of fluids or solids. b. warm air rises and takes the heat with it, eventually, it cools and sinks c. air at the equator rises and sinks at the poles. d. air molecules touch the warm ground, heating them up *not conduction