Which of the following errors could cause your percent yield to be falsely high, or even over 100%? select all that apply. select all that apply. (but not select every selections)

a. taking the mass of the empty crucible without the lid, but including the lid in all other mass measurements.

b. handling the crucible directly with your hands.

c. failing to completely decompose the sodium bicarbonate sample.

d. taking the mass of all samples with the lid included.

e. heating the sample too vigorously.

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.