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Gram to Gram Stoichiometry Exam

Authored by Jennifer Salazar

Chemistry

10th Grade

NGSS covered

Used 57+ times

Gram to Gram Stoichiometry Exam
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8 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

#1


The average human requires 120 grams of glucose (180.18 g/mol) per day. How many grams of CO2 (44.01 g/mol) are required to produce this amount of glucose in plants?

The photosynthetic reaction is:


6 CO2 + 6 H2O ------> C6H12O6 + 6 O2

16.36 g CO2

175.86 g CO2

81.88 g CO2

2947.73 g CO2

Tags

NGSS.HS-PS1-7

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

#2


Silver sulfide (Ag2S) is the common tarnish on silver objects.


What mass of silver sulfide can be made from 12.30 g of hydrogen sulfide (H2S) obtained from a rotten egg?


4Ag + 2H2S + O2 -----> 2Ag2S + 2H2O

268.24 g Ag2S

1.69 g Ag2S

894.1 g Ag2S

89.41 g Ag2S

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-2

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

#3


How many moles of Cu are needed to react with 3.50 moles of AgNO3?


Cu + 2 AgNO3 ---> Cu(NO3)2 + 2 Ag

3.50 moles Cu

1.75 moles Cu

7.0 moles Cu

10.75 moles Cu

Tags

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

#4


Cu + 2 AgNO3 ---> Cu(NO3)2 + 2 Ag


If 89.5 grams of Ag were produced, how many grams of Cu reacted?

86.49 g Cu

105.46 g Cu

75.96 g Cu

26.36 g Cu

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

#5


Molten iron and carbon monoxide are produced in a blast furnace by the reaction of iron(III) oxide and coke (pure carbon). If 250 grams of pure Fe2O3 is used, how many grams of iron can be produced?


Fe2O3 + 3 C ---> 2 Fe + 3 CO

3.13 g Fe

43.71 g Fe

111.49 g Fe

174.86 g Fe

Tags

NGSS.HS-PS1-7

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

#6


4 NH3 + 5 O2 ---> 4 NO + 6 H2O


When 1.20 moles of ammonia (NH3) reacts, the total mass of water produced is?

28.82 g water

32.44 g water

16.22 g water

6 g water

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

#7


2 NaClO3 ---> 2 NaCl + 3 O2


12.00 moles of NaClO3 will produce how many grams of O2?

576 grams of Oxygen

5.41 grams of Oxygen

7.22 grams of Oxygen

19.96 grams of Oxygen

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