According to the following reaction, what is the change in enthalpy (kJ) per mole of the reaction?  Do not type units into your answer.   2NH3(g) + 3O2(g) + 2CH4(g) ⟶⟶ 2HCN(g) + 6H2O(g)     ΔH=−948.4kJΔH=−948.4kJ

A chemist carefully measures the amount of heat needed to raise the temperature of a 533.0 mg sample of CH,N from 53.8 °C to 68.3 °C. The experiment shows that 16.5 J of heat are needed. What can the chemist report for the molar heat capacity of CH,N? Round your answer to 3 significant digits. -1 - 1 J•mol • K x10

A chemist measures the enthalpy change AH during the following reaction: 2 KCl(s) + 30₂(g) →2 KClO3(s) Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction 2 KCI(s) + O₂(g) →KCIO₂ (s) 6K CIO3 (s) 6KCI(s) + 90₂ (g) 2K CIO3(s) 2KCI(s) 2KCl(s) + + 30₂ (g) ΔΗ = 78. kJ ΔΗ เม Ок kJ kJ kJ x10 X Ś

Consider the thermochemical equation for the combustion of acetone (C3H₂O), the main ingredient in nail polish remover: C3H6O (1) + 4 O₂ (g) → 3 CO₂ (g) + 3 H₂O (g) ΔΗ° rxn = 1790 kJ If a bottle of nail polish remover contains 222 mL of acetone, what is the magnitude (the value) of heat released by the complete combustion of the acetone in the bottle? The density of acetone is 0.788 g/mL. The molar mass of acetone is 58.08 g/mol. The units are kJ. Do not include units in your answer.