C3H8 + 5O2—> 3CO2 +4H2O 65.8 grams of C3H8 reacted with excess oxygen. The percent yield of water was 35.0%. How many grams of water were produced?

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

Calculate the number of molecules present in 0.750 mol of mgo.

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point