Which chemical equation represents a combustion reaction? A) H2 + 12 → 2H1
B) 2Zn + 2HNO3 → Zn(NO3)2 + H2
C) NaCl + KI → Nal + KCI
D) LC2H6+
+ 702 + 4CO2 + 6H2O

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

What is the mass of phosphorous in a 51-kg person

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?