I'm bored so, who wants to talk? BTW I am 14 and a girl

Compare and contrast physical changes with chemical changes.

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.