Amines and amides are derivatives of: 1. nitrogen gas 2. ammonia 3. nitrous oxide 4. aldehyde

Agas mixture with a total pressure of 745 mmhg contains each of the following gases at the indicated partial pressures: co2, 245 mmhg ; ar, 119 mmhg ; and o2, 163 mmhg . the mixture also contains helium gas. part a what is the partial pressure of the helium gas? phe p h e = nothing mmhg request answer part b what mass of helium gas is present in a 10.2-l sample of this mixture at 283 k ? m m = nothing g request answer

How many grams of n2h4 will be consumed by 23 g of n2o4

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '