Stoichiometry unit review
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Stoichiometry Unit Review. How many grams are equal to 1.50 moles of krypton?. .0179 41.9 83.8 126 9.03 x 10 23. 4. How many moles of cobalt are equal to 4.7 x 10 23 atoms of cobalt?. .080 .78 1.3 46 2.8 x 10 25. 0. How many moles of zirconium are equal to 270 grams of zirconium?.

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Stoichiometry Unit Review

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Stoichiometry unit review

Stoichiometry Unit Review


How many grams are equal to 1 50 moles of krypton

How many grams are equal to 1.50 moles of krypton?

  • .0179

  • 41.9

  • 83.8

  • 126

  • 9.03 x 1023

4


How many moles of cobalt are equal to 4 7 x 10 23 atoms of cobalt

How many moles of cobalt are equal to 4.7 x 1023 atoms of cobalt?

  • .080

  • .78

  • 1.3

  • 46

  • 2.8 x 1025

0


How many moles of zirconium are equal to 270 grams of zirconium

How many moles of zirconium are equal to 270 grams of zirconium?

  • 2.96

  • 4.49

  • 91.2

  • 24,629

  • 1.78 x 1024

0


243 52 grams of antimony is equal to mole s of antimony or atom s of antimony

243.52 grams of antimony is equal to _______ mole(s) of antimony or _______ atom(s) of antimony.

  • 1; 6.02 x 1023

  • 2; 6.02 x 1023

  • 2; 1.20 x 1024

  • .5; 1.20 x 1024

  • 2; 2

0


What is the molar mass of sulfuric acid h 2 so 4

What is the molar mass of sulfuric acid, H2SO4?

  • 25

  • 49

  • 67

  • 98

  • 194

13


Stoichiometry unit review

0

Sodium sulfide and cadmium(II) nitrate undergo a double replacement reaction. What is the mass of cadmium sulfide that can be produced from 5.00 g of sodium sulfide?Na2S + Cd(NO3)2 2 NaNO3 + CdS

  • 0.34 g

  • 0.64 g

  • 4.69 g

  • 9.38 g

  • 18.8 g


Stoichiometry unit review

0

Hydrogen and nitrogen gases can be combined to form ammonia gas, NH3. How many moles of N2 are required to form 27.0 g of ammonia?3 H2 + N2 2 NH3

  • 0.79 mol

  • 1.59 mol

  • 3.17 mol

  • 44.4 mol

  • 88.8 mol


Stoichiometry unit review

How many grams of the excess reactant will remain when 10.0 g of silicon and 100 g of oxygen react?Si + O2 → SiO2

  • 0.0 g

  • 21.5 g

  • 64.8 g

  • 88.4 g

  • 166 g

0


What is the percent yield if 35 grams of so 3 is produced from 50 grams of so 2 2so 2 o 2 2so 3

What is the percent yield if 35 grams of SO3 is produced from 50 grams of SO2?2SO2 + O2 → 2SO3

  • 15%

  • 30%

  • 56%

  • 80%

  • 94%

30


Stoichiometry unit review

Determine the percent yield of hydrogen if 12.5 grams of hydrogen is collected from the reaction of 500 g of zinc with 500 g of HCl.Zn(s) + 2HCl(aq) ↔ H2(g) + ZnCl2(aq)

  • 14%

  • 46%

  • 77%

  • 91%

  • 110%

30


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