Answer:
the correct answer to your question is 20
Molar mass of CaCl2 = 40+ ( 35.5 ×2)=110
Mr of Ca(OH)2 = 40+ (16+1)×2 =74
%of Ca = (40÷ 74)×10=...
1 m = 100cm...
1cm = (1÷100) m
So 45.5 cm = 45.5 ×(1÷100) =....
1km = 1000m
1m = 100 cm
1cm =10mm
So 1km = 1000×100×10 mm
Now convert
From the balanced equation, we know that one mole of lithium oxide is produced for every two moles of lithium metal. Therefore, we have:
8 moles Lithium * (1 mole Li2O)/(2 moles Lithium) = 4 moles Li2O
The answer is: Aststine (At)
Explanation:
Each atom type contains the same number of protons. Chemical bonds link elements together to form more complex molecules called compounds. A compound consists of two or more types of elements held together by covalent or ionic bonds