The combustion of hydrogen and oxygen is commonly used to power rocket engines:
2H2 (g) + O2 (g) → 2H20 (g)
If the final pressure of water vapor was 0.875 atm and the
temperature is 400. K, how many mols of H2O was produced
assuming that the reaction went to completion in a 250.L
engine?
mol

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign

What is the effect of returning nuclear reactor cooling water back into bodies of water?

Elizabeth has two separate samples of the same substance. sample is in the liquid state, and the other is in the solid state. the two samples most likely differ in which property?