How are the codes (chemical formulas) for elements different from those for compounds?
1 answer:
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Answer= 16g
Explanation:-
Convert grams to moles:
No. of moles= mass/molar mass (Mr)
So,
9.7/24=0.40 mols
Now, multiply the mols with the coefficients of Mg and MgO in this way:
0.40 x 2/2= 0.4 mols
Finally, multiply 0.4 mols with the molar mass (Mr) of MgO:
0.4 x 40= 16g
16 grams of MgO.
Check the picture to understand>>
Explanation:-
Convert grams to moles:
No. of moles= mass/molar mass (Mr)
So,
9.7/24=0.40 mols
Now, multiply the mols with the coefficients of Mg and MgO in this way:
0.40 x 2/2= 0.4 mols
Finally, multiply 0.4 mols with the molar mass (Mr) of MgO:
0.4 x 40= 16g
16 grams of MgO.
Check the picture to understand>>