Which of the following is an example of a hormone?

adrenaline

blood

calcium

thyroid

Idon't really understand this can you me and show your work.☺☺[ chemistry b] subject [ electron transfer in lonic bonds]grade( 12)

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

The density of benzene at 15 °c is 0.8787 g/ml. calculate the mass of 0.1500 l of benzene at this temperature. enter your answer in terms of grams