i'm no sciance wiz part 2?

Question

Earth's greatest speed of rotation occurs at the
equator.
Tropic of Cancer.
Arctic Circle.
North Pole.

Lead has an electron configuration of 2, 8, 18, 32, 18, 4. How many protons does lead have?
2
18
32
82

Which set of characteristics best describes mafic magma?
high silica content, thin and fluid, forms dark-colored rock
high silica content, thick and slow-flowing, forms light-colored rock
low silica content, thin and fluid, forms dark-colored rock
low silica content, thick and slow-flowing, forms light-colored rock

Which is the most probable reason for the difference between the properties of diamonds and graphite?
Diamond is a silicate; graphite is composed of carbon.
Diamond has weaker bonds; graphite has stronger bonds.
Diamond and graphite are different structural forms of carbon.
Diamond and graphite are different structural forms of silica.

Two locations separated by 1 degree of longitude differ in solar time by about
1 minute.
4 minutes.
15 minutes.
60 minutes.

Answer 1

You again ? Short-cutting your home work ?
Well, the answers are :
** At the equator. Because any point on equator will travel the largest distance than any point on the other options.
** 82. If you add up all the electrons in different shells (2+8+18+31+18+4) it gives you total number of electrons, each carrying a unit negative charge. To keep the atom neutral, we have to balance the total negative charge due to this 82 electrons by equivalent positive charge. This can only be done by 82 protons, each having a unit positive charge.
** Mafic magma has a low silica content, low viscosity (although not always) and forms mafic rocks which are dark coloured. So your third option is correct.
**Both diamond and graphite are different forms of carbon (Polymorphs). They are basically nothing but carbon, but the difference is in their molecular structure. So the answer is your third option.
**Calculate yourself. A complete rotation of earth, i.e., 360 degrees takes 24 hours (24 X 60 minutes). So 1 degree is (24X60)/360 =4 minutes.
Next, time do it yourself. Depending on others is going to harm you.

Answer 2

Cancer is the nearest of your choices to the equator - hence faster than others

Add up the electrons - needs same number of protons = 82

Don't know this one

The 3rd answer - diff, forms of carbon

360 degs gives time differenc of 24 hours (! rotation for the earth)

so 1 deg gives difference of 24 hour/360

=4 mins according to my calculation