Ethanol melts at -114 °C and boils at 78 °C. Predict the state of ethanol at:
a) -150 °C,
b) 25 °C,
c) 0 °C,
d) 100 °C.

Acontrol during an experiment. might change remains constant does not exist does change

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth