What do the coefficients in the following balanced chemical equation mean? 2h2 + o2 → 2h2o a) 2 moles of oxygen and 1 mole of hydrogen in the products b) 2 moles of hydrogen and 1 mole of oxygen in the products c) 2 moles of oxygen and 1 mole of hydrogen in the reactants d) 2 moles of hydrogen and 1 mole of oxygen in the reactants

This large tectonic plate is bounded on three sides by whats know as the ring of fire. what is the name of this tectonic plate? a) pacific plate b) eurasian plate c) north american plate d) indo- australian plate plz it's science but there's no option for science so i picked chemistry

Fossil fuels are organic compounds that are made from

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]