Calculate the collision frequency for 1.0 mole of Krypton (Kr) at equilibrium at 300 K and 1.0 atm pressure.
Which of the following alterations increases the collision frequency more?

A. doubling the temperature
B. at constant pressure
C. doubling the pressure at constant temperature

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

The vapor pressure of ethanol is 1.00 × 102 mmhg at 34.90°c. what is its vapor pressure at 61.61°c? (δhvap for ethanol is 39.3 kj/mol.)