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60.5% + 39.7% = 100%
A compound is formed when 9.03 g
Mg combines completely with 3.48 g
N. What is the percent composition
of this compound?

The percent composition  of this compound :

Mg = 72.182%

N = 27.818%

Given

9.03 g  Mg

3.48 g  N

Required

The percent composition

Solution

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

Total mass of the compound :

= 9.03 g + 3.48 g

= 12.51 g

The percent composition :

Mg : 9.03/ 12.51 g x 100% = 72.182%

N : 3.48 / 12.51 g x 100% = 27.818%

i think it is d. e because the next one is igneous.

2b2t

explanation:

2b2t