A compound of magnesium contains $21.9 %$ magnesium, $27.8 %$ phosphorus and $50.3 %$ oxygen. What will be the simplest formula of the compound?

M g_{2} P_{2} O_{7}

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M g P O_{3}

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M g_{2} P_{2} O_{2}

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M g P_{2} O_{4}

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Solution

The correct option is B $M g_{2} P_{2} O_{7}$
Element Mass % Atomic mass (g) Mass at. mass( $\frac{M a s s %}{A t o m i c m a s s}$ ) Integral ratio
Mg 21.9 24.3 0.90 2
P 27.8 31 0.90 2
O 50.3 16 3.14 7
Simplest formula is therefore $M g_{2} P_{2} O_{7}$ .

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The simplest formula of a compound containing 21.9%Mg, 27.8%P, 50.3% O, by mass is.......

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Q. What is the empirical formula of a compound that contains

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Q. If

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In a compound of magnesium (Mg = 24) and nitrogen (N= 14 ), 18 g of magnesium combines with 7 g of nitrogen.
Deduce the simplest formula by answering the following questions:
(a) how many gram atoms of magnesium are equal to 18 g?
(b) how many grams atoms of nitrogen equal to 7 g of nitrogen?
(c) calculate simple ratio of gram atoms of magnesium to gram atoms of nitrogen and hence the simplest formula of the compound formed.

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Element	Mass %	Atomic mass (g)	Mass at. mass( $\frac{M a s s %}{A t o m i c m a s s}$ )	Integral ratio
Mg	21.9	24.3	0.90	2
P	27.8	31	0.90	2
O	50.3	16	3.14	7

A compound of magnesium contains 21.9% magnesium, 27.8% phosphorus and 50.3% oxygen. What will be the simplest formula of the compound?

The correct option is B Mg2P2O7 Element Mass % Atomic mass (g)Mass at. mass(Mass%Atomic mass)Integral ratio Mg 21.924.3 0.90 2 P 27.831 0.90 2 O 50.316 3.14 7Simplest formula is therefore Mg2P2O7.

A compound of magnesium contains $21.9 %$ magnesium, $27.8 %$ phosphorus and $50.3 %$ oxygen. What will be the simplest formula of the compound?

The correct option is B $M g_{2} P_{2} O_{7}$
Element Mass % Atomic mass (g) Mass at. mass( $\frac{M a s s %}{A t o m i c m a s s}$ ) Integral ratio
Mg 21.9 24.3 0.90 2
P 27.8 31 0.90 2
O 50.3 16 3.14 7
Simplest formula is therefore $M g_{2} P_{2} O_{7}$ .