How much energy is required to heat 32.5 g of water from 34°c to 75°c

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2:

What if it is did darwin used to support his theory of evolution