Well Mendeleev<span> predicted the existence and properties of elements that werent discovered at the time</span>
Answer:
<em>I</em><em> </em><em>think</em><em> option</em> ( b) <em>tea </em><em>is</em><em> right</em><em> answer</em>
Explanation:
1 mole = 6.02 x 10^23 atoms (Avogadro’s number)
Step 1) Determine how many grams of a substance are in the problem
Step 2) Find the amount of grams in 1 mole of the substance
3) Multiply step one by step two
This was an answer i found on google from Nasa
