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If the molar mass of the chlorophyll compound is 892 g, what is the percent by mass of magnesium?

A. 3.0%
B. 2.9%
C. 2.8%
D.2.7%


Sagot :

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Chemical formula of chlorophyll

C₅₅H₇₂O₅N₄Mg

Problem:

If the molar mass of the chlorophyll compound is 892 g, what is the percent by mass of magnesium?  

A. 3.0%

B. 2.9%

C. 2.8%

D.2.7%

Answer:

D.2.7%

Given Data:

mass of chlorophyll = 893.51 g

mass of magnesium = 24.3 g

Percent by mass of magnesium = unknown

Solution:

% mass of magnesium = mass of magnesium ÷ mass of chlorophyll  × 100

                                      = 24.3 g ÷ 893.51 g × 100

                                      = 0.02719 × 100

                                      = 2.719 %

                                     = 2.7 %

                     

Answer:

The percent by mass of magnesium in chlorophyll is equal to 2.7%

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brainly.ph/question/8277371