A student places a 12-gram cube of ice inside a container. After six hours, the student returns to observe the contents of the container. Which mtence suggests that the container is an open system?
O A. The container contains 12 grams of liquid water and no ice.
ОВ. The container contains 12 grams of ice and no liquid water.
Ос.
The container contains 8 grams of liquid water and no ice.
OD. The container contains 8 grams of ice and 4 grams of liquid water.
OE.
The container contains 8 grams of liquid water and 4 grams of water vapor.

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]