Question

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) + H2O(l) → Ca(OH)2(s) In a particular experiment, a 1.00 g sample of CaO is reacted with excess water and 0.82 g of Ca(OH)2 is recovered. What is the percent yield in this experiment? a. 122 b. 1.44 c. 62.2 d. 0.82 e. 82.1 How many significant figures are there in the answer for the following problem? [(165.7 - 143) × 4.08] / 0.800 = ?

Name: calcium oxide reacts with water in a combination reaction to produce calcium hydroxide caos h2ol caoh2s in a particular experiment a 100 g sample of cao is reacted with excess water and 082 80012
Uploaded: 2022-06-13T17:17:05-08:00
Duration: 2 min 15 s
Channel: Ma Ednelyn Lim
Description: calcium oxide reacts with water in a combination reaction to produce calcium hydroxide caos h2ol caoh2s in a particular experiment a 100 g sample of cao is reacted with excess water and 082 80012

          Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide:
CaO(s) + H2O(l) → Ca(OH)2(s)
In a particular experiment, a 1.00 g sample of CaO is reacted with excess water and 0.82 g of Ca(OH)2 is recovered. What is the percent yield in this experiment?
a. 122
b. 1.44
c. 62.2
d. 0.82
e. 82.1

How many significant figures are there in the answer for the following problem?
[(165.7 - 143) × 4.08] / 0.800 = ?

Added by Francis C.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Ma Ednelyn Lim

06/13/2022

Step 1

Given: Mass of CaO = 1.00 g Molar mass of CaO = 56.08 g/mol Molar mass of Ca(OH)2 = 74.09 g/mol Calculate moles of CaO: 1.00 g CaO * (1 mol CaO / 56.08 g CaO) = 0.0178 mol CaO Calculate moles of Ca(OH)2 produced: 0.0178 mol CaO * (1 mol Ca(OH)2 / 1 mol CaO) = Show more…

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Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) + H2O(l) → Ca(OH)2(s) In a particular experiment, a 1.00 g sample of CaO is reacted with excess water and 0.82 g of Ca(OH)2 is recovered. What is the percent yield in this experiment? a. 122 b. 1.44 c. 62.2 d. 0.82 e. 82.1 How many significant figures are there in the answer for the following problem? [(165.7 - 143) × 4.08] / 0.800 = ?