CuO + H2 → Cu + H2O(l) ΔH = -130.6 kJ

What is the value of ΔH if the reaction produced water vapor instead of liquid water? (ΔH = 44 kJ/mol for the phase change H2O(l) → H2O(g))

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.