Unit 6 Lesson Three Exercise: Stoichiometry

 

 

 

CHEMISTRY

 

 

 

 

 

Stoichiometry may be regarded as the maths of chemistry. It entails utilizing relationships between reactants and/or merchandise to find out such portions as mass, moles, and variety of atoms. Dimensional Assessment is a option to simplify stoichiometric drawback fixing. On this exercise, you’ll use dimensional Assessment in an effort to rely the variety of atoms in a given substance.

 

 

 

 

 

Text Box: Record in Table 11.  A pattern of gold (Au) has a mass of 35.12 g.                            http://www.chemistryexplained.com/images/chfa_02_img0374.jpgmolar mass

 

a.   Text Box: Record in Table 1Calculate the variety of moles of gold (Au) within the pattern and file in Desk 1. Present your work under.

 

b.   Calculate the variety of atoms of gold (Au) within the pattern and file in Desk 1. Present your work under.

 

 

 

 

 

 

Text Box: Record in Table 1

 

 

 

2.  A pattern of desk sugar (sucrose, C12H22O11) has a mass of 1.202 g.

 

oxygenhttp://www.chemteam.info/Mole/Hydrogen.GIF

 

a.   Calculate the variety of moles of C12H22O11 contained within the pattern and file in Desk 1. Present your work. (Begin with molar mass from periodic desk and multiply by variety of atoms of every ingredient.)

 

a.    Discover molar mass of Carbon. .         1.202 g (1mol sucrose)/(342g)=Three.5 x 10^-Three mol surcose

 

 

 

 

Discover molar mass of Hydrogen.

 

 

Discover molar mass of Oxygen.

 

 

 

 

Text Box: Record in Table 1Then, add all Three totals to seek out complete molar mass of C12H22O11.

 

Then calculate moles of C12H22O11.

 

 

b.   Text Box: Record in Table 1Calculate the moles of every ingredient in C12H22O11 and file in Desk 1. Present your work. Take the moles of C12H22O11 and multiply by the variety of atoms of every ingredient within the compound.

 

 

Text Box: Record in Table 1Text Box: Record in Table 1

 

 

c.    Calculate the variety of atoms of every kind in C12H22O11 file in Desk 1. Present your work. Take the moles of every ingredient above and multiply by 6.02 x 1023 to seek out the variety of atoms of every ingredient within the compound. Be sure your solutions are appropriately written in scientific notation (In scientific notation all numbers are expressed as a product of a quantity that’s > 1 however < 10  and an exponent of 10.)

 

 

 

 

Text Box: Record in Table 1

 

 

 

Text Box: Record in Table 1

 

 

Text Box: Record in Table 1

 

 

 

 

Desk 1

 
 

 

Au

C12H22O11
Mass (grams)

35.12 g

 

1.202 g
Molar mass (g/mol)  

 

  
 

 

 

 

 

Moles of every ingredient

  

 

 

 

Au moles:

  

C:

 

 

H:

 

 

O:

 
 

 

 

Atoms of every ingredient

 

 

 

  

 

Atoms of Au:

  

C:

 

 

H:

 

 

O:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RUBRIC

 

 

 

 

Three

2

1

zero

Factors Awarded
Question Assignment #1 N/A  

Work is proven for each calculations.

 

  

 Work is proven for one calculation.

 

  

 Work is just not proven for any calculation.

 

  

                ___ /2

 
Question Assignment #2  

 All work is proven for 3 calculations.

 

  

 All work is proven for each calculations.

 

  

 All work is proven for one calculation.

 

  

 Work is just not proven for any calculation.

 

  

 ___×Three = ___ /9

 
Information Desk  

 All information is correct.

 

  

 Most information is correct.

 

  

 Little information is correct.

 

  

 No information is correct.

 

  

 ___×Three = ___ /9

 

 

 

 

Complete factors: ___ /20

 

Feedback :

 

 

 

 

 

Identify:                                                                            Date:

 

 

 

   

 

Unit 6 Lesson Three Exercise: Stoichiometry

 

 

 

CHEMISTRY

 

 

 

 

 

Stoichiometry may be regarded as the maths of chemistry. It entails utilizing relationships between reactants and/or merchandise to find out such portions as mass, moles, and variety of atoms. Dimensional Assessment is a option to simplify stoichiometric drawback fixing. On this exercise, you’ll use dimensional Assessment in an effort to rely the variety of atoms in a given substance.

 

 

 

 

 

Text Box: Record in Table 11.  A pattern of gold (Au) has a mass of 35.12 g.                            http://www.chemistryexplained.com/images/chfa_02_img0374.jpgmolar mass

 

a.   Text Box: Record in Table 1Calculate the variety of moles of gold (Au) within the pattern and file in Desk 1. Present your work under.

 

b.   Calculate the variety of atoms of gold (Au) within the pattern and file in Desk 1. Present your work under.

 

 

 

 

 

 

Text Box: Record in Table 1

 

 

 

2.  A pattern of desk sugar (sucrose, C12H22O11) has a mass of 1.202 g.

 

oxygenhttp://www.chemteam.info/Mole/Hydrogen.GIF

 

a.   Calculate the variety of moles of C12H22O11 contained within the pattern and file in Desk 1. Present your work. (Begin with molar mass from periodic desk and multiply by variety of atoms of every ingredient.)

 

a.    Discover molar mass of Carbon. .         1.202 g (1mol sucrose)/(342g)=Three.5 x 10^-Three mol surcose

 

 

 

 

Discover molar mass of Hydrogen.

 

 

Discover molar mass of Oxygen.

 

 

 

 

Text Box: Record in Table 1Then, add all Three totals to seek out complete molar mass of C12H22O11.

 

Then calculate moles of C12H22O11.

 

 

b.   Text Box: Record in Table 1Calculate the moles of every ingredient in C12H22O11 and file in Desk 1. Present your work. Take the moles of C12H22O11 and multiply by the variety of atoms of every ingredient within the compound.

 

 

Text Box: Record in Table 1Text Box: Record in Table 1

 

 

c.    Calculate the variety of atoms of every kind in C12H22O11 file in Desk 1. Present your work. Take the moles of every ingredient above and multiply by 6.02 x 1023 to seek out the variety of atoms of every ingredient within the compound. Be sure your solutions are appropriately written in scientific notation (In scientific notation all numbers are expressed as a product of a quantity that’s > 1 however < 10  and an exponent of 10.)

 

 

 

 

Text Box: Record in Table 1

 

 

 

Text Box: Record in Table 1

 

 

Text Box: Record in Table 1

 

 

 

 

Desk 1

 
 

 

Au

C12H22O11
Mass (grams)

35.12 g

 

1.202 g
Molar mass (g/mol)  

 

  
 

 

 

 

 

Moles of every ingredient

  

 

 

 

Au moles:

  

C:

 

 

H:

 

 

O:

 
 

 

 

Atoms of every ingredient

 

 

 

  

 

Atoms of Au:

  

C:

 

 

H:

 

 

O:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RUBRIC

 

 

 

 

Three

2

1

zero

Factors Awarded
Question Assignment #1 N/A  

Work is proven for each calculations.

 

  

 Work is proven for one calculation.

 

  

 Work is just not proven for any calculation.

 

  

                ___ /2

 
Question Assignment #2  

 All work is proven for 3 calculations.

 

  

 All work is proven for each calculations.

 

  

 All work is proven for one calculation.

 

  

 Work is just not proven for any calculation.

 

  

 ___×Three = ___ /9

 
Information Desk  

 All information is correct.

 

  

 Most information is correct.

 

  

 Little information is correct.

 

  

 No information is correct.

 

  

 ___×Three = ___ /9

 

 

 

 

Complete factors: ___ /20

 

Feedback :

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