Ammonia (NH3 (g), Hf = - 45.9 kJ/mol) reacts with oxygen to produce nitrogen and water (H2 O (g), Hf = - 241.8 kJ/mol) according to the equation below. What is the enthalpy of the reaction?

1) - 3,572.1 kJ

2) - 1,267.2 kJ

3) 1,267.2 kJ

4) 3,572.1 kJ

How many moles of HCl are required to neutralize all 0.050 mol of Ca (OH) 2

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Solve for x in the following expression: 3 / x = 7 A) 2.33 B) 21 C) 4 D) 0.4285

Which atom in the ground state has the same electron configuration as a calcium ion, Ca2+, in the ground state? (1) Ar (2) K (3) Mg (4) Ne

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Which earth cycle does the suns energy drive

How many moles are in 10 grams of CaCl2?

Which is the correct formula for phosphorus pentachloride? PCl4 because a subscript of 4 indicates four Cl atoms PCl5 because a subscript of 5 indicates five Cl atoms P5Cl because a subscript of 5 indicates five P atoms P5Cl3 because a subscript of

Why are the elements in groups 3 to 12 often used to make dyes?