(1 point) 9. A student mixed two clear liquids together in a beaker. A solid and a new liquid
formed. The student forgot to write down the mass of one of the reactants. The rest of
the data are shown in the table below.
liquid reactant A
liquid reactant B
liquid product
solid product
Mass (g)
unknown
9.0
8.0
12.0
What is the mass of liquid reactant A?
O 1.0 g
08.0 g
09.0g
O 11.0 g
O 20.0 g

Can’t seem to figure this one out

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

Someone me i need with this stuff

Me! i will mark you brainliest if you are right and show your i don't get polynomials and all the other stuff. multiply and simplify.2x(^2)y(^3)z(^2) · 4xy(^4)x(^2)show your