Chalk is calcium carbonate. Excess chalk is added to an acid. A reaction occurs in which one of the products is calcium nitrate.
(b) Write a balanced equation for the reaction.

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

un recipient conține 6,4 moli de gaz. gazul hidrogen reprezintă 25% din totalul kilometrilor din container. în cazul în care presiunea totală este de 1.24 atm ceea ce este