tasjanayroberts
11.02.2021 •
Chemistry
How many moles are in 5g of Na2CO3?
a) 0.047
b) 1
c) 2
d)21.2
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Ответ:
0.047
Explanation:
Data : 5g , Na2CO3
Formula:
Molecular mass of Na2Co3 = no.of atomic mass x no. of atom
moles = mass÷ molecular mass
molecular mass = 2(23)+1(12)+3(16)
=106amu
moles = 5÷106
= 0.047 Ans:
Ответ:
i think the answer is dis lololol