Determine the number of molecules of Cr2O3 that form when 1.34 x 103 g of oxygen completely reacts according to the following equation: 4 Cr(s) + 3 02(g) → 2 Cr2O3(s)

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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2:32 PM Mon Oct 19
Question 25 of 49
Su
Determine the number of molecules of Cr2O3 that form when 1.34 x 10³|
g of oxygen completely reacts according to the following equation:
4
Cr(s) +
3 02(g) →
2 Cr203(s)
STARTING AMOUNT
ADD FACTOR
ANSWER
RESET
*( )
52.00
4.24 x 103
152.00
3
1.34 x 103 2.52 × 1025
32.00
1
1.68 x 1025
2
3.78 x 1025
6.022 x 1023
g Cr2O3
g O2
molecules Cr2O3
mol Cr2O3
g Cr
mol Cr
mol O2
Transcribed Image Text:2:32 PM Mon Oct 19 Question 25 of 49 Su Determine the number of molecules of Cr2O3 that form when 1.34 x 10³| g of oxygen completely reacts according to the following equation: 4 Cr(s) + 3 02(g) → 2 Cr203(s) STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 52.00 4.24 x 103 152.00 3 1.34 x 103 2.52 × 1025 32.00 1 1.68 x 1025 2 3.78 x 1025 6.022 x 1023 g Cr2O3 g O2 molecules Cr2O3 mol Cr2O3 g Cr mol Cr mol O2
Mon Oct 19
令
Question 22 of 49
How many moles of H2SO4 are required to completely react with 7.20 mol of Al
according to the balanced chemical reaction:
2
Al(s) +
H2SO4(aq) → Al2(SO4)3(aq) +
H2(g)
STARTING AMOUNT
ADD FACTOR
ANSWER
RESET
*( )
2
7.,20
26.98
2.02
21.6
342.14
1
3.60
2.40
6.022 x 1023
10.8
98.08
g H2SO4
mol H2SO4
g H2
g Al2(SO4)3
mol Al
g Al
mol H2
mol Al2(SO4)3
Transcribed Image Text:Mon Oct 19 令 Question 22 of 49 How many moles of H2SO4 are required to completely react with 7.20 mol of Al according to the balanced chemical reaction: 2 Al(s) + H2SO4(aq) → Al2(SO4)3(aq) + H2(g) STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 2 7.,20 26.98 2.02 21.6 342.14 1 3.60 2.40 6.022 x 1023 10.8 98.08 g H2SO4 mol H2SO4 g H2 g Al2(SO4)3 mol Al g Al mol H2 mol Al2(SO4)3
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