Which of the following represents a phase change? a. melting b. crushing c. expanding d. burning

Smog is the term used to describe the combination of fog and smoke

How many moles of gas are present if p=11 atm, v=12l, t=185k?

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.