gujacksongu6

06.07.2021 • 

Chemistry

Why are chemical equations balanced? A. To show that the total number of moles of substances does not change
B. To show that the mass of atoms in the products must equal the mass of atoms in the reactants O
c. To show that the total number and type of each atom does not change
D. To show that the total mass can only change when the total number of moles of substances changes​

Ответ:

judyewert

29.01.2021

Chemistry

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16 g of reacted with the magnesium

Explanation:

from the equation of reaction: 2Mg + →

48g of Mg requires 32g of O2 to yield 80g of MgO

That is :

    48 : 32 : 80

Hence 12 : x: 32

xg of O2  =

= 16 g of

Therefore:

16 g of reacted with the magnesium

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