Is 2Zn + 2HCI = ZnCL2 + H2 balanced or unbalanced

When the water vapor cools it condenses select a number that represents his process on the

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

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)]