Given the reactions, X(s)+12O2(g)⟶XO(s) ΔH=−979.7 kJ XCO3(s)⟶XO(s)+CO2(g)ΔH=+265.5 kJ what is

Given the reactions, X(s)+12O2(g)⟶XO(s) ΔH=−979.7 kJ XCO3(s)⟶XO(s)+CO2(g)ΔH=+265.5 kJ what is ΔH for this reaction? X(s)+12O2(g)+CO2(g)⟶XCO3(s)

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  1. The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10 23 atoms, molecules, or formula units of that substance.

  2. each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

  3. A. ​it generates energy from carbohydrates.b. it requires activation by oxygen.​c. ​it is used by cells to dispose of excess electrons

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