Answer:
I predict that the wider rubber bands are harder to stretch due to having more condensed material to be stretched than the narrow ones
Explanation:
Answer: incompressibility, rigidity, and density
Explanation:
The reaction is a single replacement reaction, as the aluminum is REPLACING the copper attached to the sulfate. the exponents on the equation, in order, would be 2, 3, 1, 3. The reaction represents a chemical change because a new compound is being formed; if the original compound was simply changing state ( from liquid to gas, etc), then the change would be physical.
The last question requires some stoichiometry. My work is attached.
Answer:
the correct answer would be c.
Answer : It increases
Rusting is where oxygen binds to iron and forms iron oxide.
So once iron rusts, there is oxygen, just not in air; it's in the iron oxide.
All reactions are reversible, albeit at different rates (the "irreversible" ones are still reversible, but much slower given that they take so much collision luck and energy.