1) Theoretically, how many kilograms of air are necessary to completely burn 5 kg of ethane gas?:

Select one:

a. 330 kg.

b. 81 kg.

c. 191 kg.

d. 19,0 kg.

e. 0,8 kg.

2)

A container contains 70 g of water (B) and 30 g of NaOH (A). Calculate the mole fraction of MW (NaOH) 40 g/mol and MW (H2O) 18 g/mol

Select one:

a. 0.3

b. 0.7

c. 0.83

d. 0.17