Answer :
Explanation : To find density, we can use the formula as given below;
density ρ =
Here, we have the mass as 89.6 g and the volume is ,
on calculating we get,
This means that the density of the copper sample is
Li (3)
N (7)
F (9)
Depends on if you are putting them in smallest to greatest.
Answer:
The molecules or ions in a solution can freely intermingle.
Explanation:
The reactant molecules and ions can move freely in solution, so thy are more likely to collide with each other and form products.
A is wrong. Solutions are homogeneous.
B and C are wrong. The statements are correct, but they are not the reason why reactions are carried out in solution.
D is wrong. Chemical reactions do not always produce a colour change.
F is wrong. Some chemicals react with water, so other (often flammable) solvents must be used.
Answer:
D
Explanation:
Technically, these are all just different types of growth. So if there is an all of the above option, I'd choose it. But, if I had to choose a specific answer I'd go with D; In my opinion it is the best example of how living things grow and develop, being the most detailed.