Chemistry Answers

 2NOCl (g) ↽−−⇀ 2NO (g) + Cl₂ (g)

Calculate the final temperature that results from mixing 245 grams of cobalt, specific heat 0.446 J/g0C, at 1420C with 106 grams of water at 24.80C.

calculate number of zinc ions in 10g of zinc hydroxide

The partial pressures of the gases in a 22.414 L volume of air at STP are: oxygen, 21.224 kPa; nitrogen, 79.119 kPa; argon 0.946 kPa; and carbon dioxide, 0.036 kPa. Determine the gram-molecular weight of air

In a coffee-cup calorimeter, 100.0 g of H2O and 100.0 mL of HCl are mixed. The HCl had an initial temperature of 44.6oC and the water was originally at 24.6oC. After the reaction, the temperature of both substances is 31.3 oC.

2.1. Was the reaction exothermic or endothermic? Explain your answer

2.2. Calculate how much heat HCl lost or gained after the reaction

in chemical reaction between nitrogen and hydrogen what happens if you increase the pressure

What effect does heat have on the reaction between nitrogen and hydrogen?

Draw the qualitative molecular orbital

diagram for dinuclear Re and Mo

complexes

Derek is reading two different definitions of a base. An Arrhenius base is a chemical that increases the concentration of OH^- in water, and a Bronsted Lowry base is a chemical that accepts a proton (H⁺.) Explain why using only the Arrhenius base definition in your Chemistry 12 course would not be adequate.

Draw and name the seven aldehydes and ketones with the formula

C5H10O