An element liberates 20g of hydrogen gas from dilute acid Assume the
mass of element is 0.5g. What is the
equivalent mass of the
element
1) 20 g/eq
2) 40 g/eq
3) 80 g/eq
4) None of the above​

According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to another? the volume and the shape stay the same. the volume increases to fill the new container, but the shape stays the same. the volume stays the same, but the shape changes to fit the new container. the volume and the shape change to fill the new container.

How does carbon monoxide pose the greatest threat to humans? a. it can be produced by wood fires. b. it can be produced by home furnaces. c. it is produced by acid rain. d. it is produced by modern automobiles.

Just on number 2 (all parts), and if you do answer explain in detail