How many atoms are in 0.85 moles of Platinum?

Answer is in the photo. I can only upload it to a file hosting service. link below!

tinyurl.com/wpazsebu

i am going to put the answers in order i dint feel like typing it out so yeah

a

d

c

b

b

b

a

d

a

b

c

c

c

b

d

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.