Question 7 How much heat does it take to warm 13.0 g of pure water from 90.0°C to 100.0°C?
(specific heat of water = 4.18 J/gºC)
O 543 joules
O 13.0 joules
O 54.3 joules
10.5 joules

If 4.8 moles of x and 3.4 moles of y react according to the reaction below, how many moles of the excess reactant will be left over at the end of the reaction? 3x + 2y “yields”/ x3y2. a. 1.7 mol y left over b. 1.6 mol x left over c. 0.2 mol y left over d. 0.1 mol x left over