PLease help me I am giving a lot of points for this please help me

Evaluate this exponential expression,8. (2 + 3)2 – 42

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.