DateNamePart B: In order to receive the credit, you must show your work.What is the empirical formula of a compound that is 66.6% C, 11.2 % H, and 22.2% O by mass?1.12.011.0116.0029.02Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide:2.CaO (s) + H2O (1)Ca(OH)2 (s)A 3.50 g sample of CaO is reacted with 3.38 g of H2O. How many grams of water remain aftercompletion of reaction?apled by a 2211pleCke/arhat voiur4mCalcium oxide reacts with water in a combination reaction to produce calcium hy droxide:3.CaO (s)+ H2O (1)-Ca(OH)2 (s)In a particular experiment, a 2.00-g sample of CaO is reacted with excess water and 2.14 g of Ca(OH)2 isrecovered. What is the percent yield in this experiment?

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Asked Oct 14, 2019
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Qestion # 2 please

Date
Name
Part B: In order to receive the credit, you must show your work.
What is the empirical formula of a compound that is 66.6% C, 11.2 % H, and 22.2% O by mass?
1.
12.01
1.01
16.00
29.02
Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide:
2.
CaO (s) + H2O (1)Ca(OH)2 (s)
A 3.50 g sample of CaO is reacted with 3.38 g of H2O. How many grams of water remain after
completion of reaction?
apled by a 2211ple
Cke/ar
hat voiur
4m
Calcium oxide reacts with water in a combination reaction to produce calcium hy droxide:
3.
CaO (s)+ H2O (1)-Ca(OH)2 (s)
In a particular experiment, a 2.00-g sample of CaO is reacted with excess water and 2.14 g of Ca(OH)2 is
recovered. What is the percent yield in this experiment?
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Date Name Part B: In order to receive the credit, you must show your work. What is the empirical formula of a compound that is 66.6% C, 11.2 % H, and 22.2% O by mass? 1. 12.01 1.01 16.00 29.02 Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: 2. CaO (s) + H2O (1)Ca(OH)2 (s) A 3.50 g sample of CaO is reacted with 3.38 g of H2O. How many grams of water remain after completion of reaction? apled by a 2211ple Cke/ar hat voiur 4m Calcium oxide reacts with water in a combination reaction to produce calcium hy droxide: 3. CaO (s)+ H2O (1)-Ca(OH)2 (s) In a particular experiment, a 2.00-g sample of CaO is reacted with excess water and 2.14 g of Ca(OH)2 is recovered. What is the percent yield in this experiment?

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Expert Answer

Step 1

The reaction involves,

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2H2O Ca(ОН)2 CaO 3.5g 56.0774g/mol 3.38g 18 g/mol Moles = 0.0624mole 0.188mole.

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Step 2

1 mole of CaO needs 2 mole of H2O

0.0624 moles of CaO needs ‘’x’’ mol...

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(0.0624 moles Ca0)(2 mole H,0 'x'moles of H2 1mole CaO 0.1248 moles.

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