What's the molar mass of alumina, Al2O3? The atomic weight of aluminum is 26.98 and the atomic weight of oxygen is 16.00. Question 16 options:

A)

101.96 g/mol

B)

48.00 g/mol

C)

42.98 g/mol

D)

149.96 g/mol

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

In apex! a liquid heated beyond a certain temperature becomes

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