During an investigation a scientist heated 27 g of mercuric oxide till it decomposed to leave a dry product. the total mass of the product formed was 25 g. does the law of conservation of mass hold true in this case?

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

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

Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products