Hurry A powder and a liquid with a total mass of 20 grams are combined in an open beaker. A reaction occurs, as indicated by the production of gas bubbles. The final mass of the solution is less than 20 grams. What best explains the difference in mass?

The differecne is the reaction made it less.

Explanation:

:)

when the power and liquid turned into a gas, some of the mass went with it

Explanation:

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current