In a combination reaction, 1.62 g of lithium is mixed with 6.80 g of oxygen.

(b) How many moles of product are formed?

(c) After this reaction, how many grams of each reactant and product are present

Li - ?

O2 - ?

Li2O - ?

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3