I think it’s 1 mole
If Iam not mistaken
The rows are called Periods.
Answer:
357.475
Explanation:
First you need periodic table and you have to look for mass
Fe = 3 x 55.845 = 167.535
P = 2 x 30.97 = 61.94
o = 4 x 2 so 8 oxygen = 8 x 16 = 128
add all and you get 357.475
-19.15 degrees Celsius. 254k-273.15=-19.15
You have to subtract 273
