When 100 grams of calcium carbonate are heated and then reweighed, the weight of the solid product is 56 grams. does this violate the law of conservation of mass? explain your answer.

Endeleev saw trends in the physical and chemical properties of elements when he organized them by

Agas at 155 kpa and standard temperature has an initial volume of 1.00 l. the pressure of the gas rises to 500 kpa as the temperature also rises to 135°c. what is the new volume? 2.16 l 0.463 l 0.207 l 4.82 l

Why does his teacher ask him to balance the equation by including the correct coefficient