Answer:
1) 1,8066*10^24 molecules of water
2)2,4088*10^24 atoms of carbon
3)4,8176*10^24 atoms of oxygen
4)2,6071*10^23 molecules og NaCl
5)107,221 g of calcium bromide
6)0,0814 moles iron III nitrate
Explanation:
I don’t really know how to explain how to write electron configurations in a short paragraph so maybe look up a video? It’s really easy to understand once you get the hang of it but i’ll attach a picture to help you write electron configurations for any element. Try to think of it as reading the periodic table from left to write until you end up on the element.
B) O^2-
Hope this helped :)
Answer:
233.38 g/mol
Explanation:
you find the molar mass of each element and then add them up.