Chem 132: In a chloride ion determination, you actually titrated 50.0 mg/L standard chloride solution but you got 46.2 mg/L. Calculate your percent error.

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Question:

In a chloride ion determination, you actually titrated 50.0 mg/L standard chloride solution but you got 46.2 mg/L. Calculate your percent error.

Select one:
a. 7.60% is the actual value larger or smaller than the experimental value?
b. 0.076%
c. -7.6%
d. 42.5%
e. -7.60%

Answer

a. 7.60

 

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Chem 132: How many significant figures are in the number 0.0040090?

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Question:

How many significant figures are in the number 0.0040090?

Select one:
a. 5
b. 8
c. 4
d. 7
e. 6

 

Answer

a. 5

 

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Chem 132: How many of the following electron configurations for the species in their ground state are correct?

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Question:

How many of the following electron configurations for the species in their ground state are correct?
I. Ca: 1s22s22p63s23p64s2
II. Mg: 1s22s22p63s1
III. V: [Ar] 3s23d3
IV. As: [Ar] 4s23d104p3
V. P: 1s22s22p63p5

Select one:
a. 1
b. 2
c. 3
d. 5
e. 4

 

 

Answer

b. 2

 

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