Physical change will not change the composition of a substance.
Answer:
It’s D
Explanation:
It’s an alloy so it is not pure. If you take a small sample and analyze it, the mixture will be similar throughout. Think of Gatorade as a homogeneous mixture because it is the same concentration of all ingredients throughout. Think of pizza for heterogeneous mixtures. There isn’t the pepperoni (or whatever you prefer) throughout.
Answer:
A and E for sure.
Explanation:
Can't be B or C, since it is stated in the problem. And probably not D because candy don't have magnetism to them.
No, the nonmetals in groups 5A, 6A, and 7A would form negatively charged ions. This is because they would accept electrons so that they can have a full octet. For example, N³⁻, O²⁻, F⁻.
Answer:
m = 673 g
Explanation:
We need to find the mass of 5.90 mol of
Molar mass of is:
Let m be the mass of 5.90 mol of . Using mole concept to find it.
No of moles = mass/molar mass
So, the required mass is 673 g. Hence, the correct option is (d).