Nitrogen fixation is the process by which atmospheric nitrogen gas reacts to form ammonia, NH3. How much heat is released from the production of 254 g of NH3? N2(g) + 3 O2(g) - 2 NH3(g)
ΔΗ = -42.0k

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?