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4 years ago

How many moles are equal to 47.2 g of K2O

Chemistry

2 answers:

HACTEHA [7]4 years ago

7 0

Answer: 0.50 mole K2O

Explanation: To convert the mass of K2O to moles we will need to find the molar mass of K2O.

47.2 g K2O x 1 mole K2O / 94 g K2O

= 0.50 mole K2O

makkiz [27]4 years ago

3 0

Answer:

0.5mole

Explanation:

First, we need to calculate the molar mass of K2O. This is illustrated below:

Molar Mass of K2O = (39x2) + 16 = 78 + 16 = 94g/mol

Mass of the K2O from the question = 47.2g

Number of mole of K2O =?

Number of mole = Mass /Molar Mass

Number of mole of K2O = 47.2/94 = 0.5mole

Therefore, 0.5mole is equal to 47.2g of K2O.

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At a wastewater treatment plant, FeCl3(s) is added to remove excess phosphate from the effluent. Assume the following reactions

RoseWind [281]

Answer : The concentration of $Fe^{3+}$ needed is, $2.37\times 10^4M$

Explanation :

First we have to calculate the mole of phosphate.

As we are given that, 1 mg P/L that means, 1 mg of phosphate present in 1 L of solution.

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Now we have to calculate the concentration of phosphate.

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4 years ago

How many molecules are in 165 g of carbon dioxide?

Svet_ta [14]

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3 years ago

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