The reaction of solid sodium hydrogen carbonate and hydrochloric acid is an example of an endothermic reaction. Suppose that the initial temperature of the system is 27°C. How do you expect the temperature to change as the reaction progresses?

What’s the scientific notation for the number 6,840,000,000

Which actions would increase the rate at salt dissolves in water? stir the water? crush the salt? use less water? heat the water? cool the salt

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j