An engineer wants to estimate the mass of gas that is present in a tank. She knows that 1. 00 mol of the gas occupies a volume of 24. 5 L at the set temperature and pressure. If the volume of the tank is 170. 0 L and the molecular weight of the gas is 32. 00 g/mol, what is the mass of gas in the tank? 130 g 222 g 784 g 5,440 g.

Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]