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

Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?

Yasmin purchased 6 heads of cabbage that each weighed 2 3/8 pounds how much did the cabbage way all together