When calculating the enthalpy of a reaction, if the reactant has a coefficient of 2, what must be done to the δhf value of the reactant?

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

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

Rays from the sun are not considered matter true or false