kishae15 kishae15

11-02-2021
Chemistry

contestada

how many moles are in 5g of Na2CO3?
a) 0.047
b) 1
c) 2
d)21.2

Respuesta :

waleedkhan001002 waleedkhan001002

11-02-2021

Answer:

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:

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