Assuming that the heat capacities don't change with temperature, how much energy in kilojoules is needed to heat 7.70 g of Hg from a temperature of 58 to 51

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?

How much energy is required to vaporize 2 kg of copper? a 4730 kj b 207kj c 9460 kj d 414kj