24 g of a substance requires 270 J of heat to increase its temperature 25 C. What is the specific heat of the substance? Identify what substance is being heated. ( must show work)

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

it would open into a square depending on the type of envelope i’m not sure about the second part

i would say true? if the unit was informational and it "refreshed your understanding", then true.