2al + 6hcl → 2alcl3 + 3h2 if 3.0 grams of h2 were produced, how many grams of al reacted? (molar mass of al = 27 g/mol, molar mass of h2 = 2.0 g/mol) grams

If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has: