i need help with chemistry!! thank you?

Question

1. Determine the number of protons, electrons, and neutrons in each of the following isotopes:
a. sodium-23
b. calcium-40
c.64/29Cu
d. 108/47Ag

2.Write the nuclear symbol and hyphen notation for each of the following isotopes:
a. mass number of 28 and atomic number of 14
b. 26 protons and 30 neutrons
c. 56 electrons and 82 neutrons

4.to two decimal places, what is the relative atomic mass and the molar mass of the lement potassium, K?

5.Determine the mass in grams of the following:
a. 2.00 mol N
b. 3.01 x 10(to the power of 23), atoms F

6. determine the amount of moles of the following:
a. 12.15 g Mg
b. 1.50 x 10 (to the power of 23), atoms F

7. Determine the number of atoms in the following:
a. 2.50 mol Zn
b. 1.50 g C


i would very much apreciate if you could give me these answers!!! thank you very much, and if you dont know them all just answer the ones you know, once again thank you

lol i dont understand anything about chemistry!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! i hate science man :(

Answer 1

You should be able to do these by applying the principles: Protons = atomic number, atomic wt = protons+neutrons, electrons= protons. For example sodium is atomic no 11, so it has 11 protons, 11 electons, and for isotopic Na with weight 23, 12 protons.

#2. Same deal here, except that you figure out the element name.

Rest of them: principal 1 g-atom or g-mole of an element is 6.02 x 10^23 atoms . 1 mole of an element is its atomic weight in grams.