When the following equation is balanced, what is the coefficient for hbr?
zn(s) + hbr(aq) -> znbr2(aq) + h2(g)
a) 3
b) 1
c) 6
d) 2

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

Amixture that has two or more substances that are spread out evenly is called a. compound b. heterogeneous c. substance d. homogeneous

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?