Question

Helppppp me helpp me

Answer 1

The fourth option

Step-by-step explanation:

So if you got the periodic table, you can search for boron and get it's Molar Mass: B=10.811u

We know the given mass and we know that there's only 1 mol of boron given, we can calculate it by the given:
`88.0g *(1 mol)/(10.811g) = 8.14mol`

We use avogadro's number (6.022×10²²), plug in our new value to get the # atoms:
`8.14 *(6.022*10^2^2)/(1 mol) = 4.90*10^2^2` (Multiply 8.14 by Avogadro's number to get the atom number)

so the atom number for 88g of Boron would be : 4.90×10²² atoms of B

Answer 2

Answer: i think its the 3 one

Explanation: hope this helps :)