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Suma > Elsevier Calculations > Flashcards

Elsevier Calculations Flashcards

1
Q

How many liters are in 4 dl?

a. 400
b. 40
с. 0.4
d. 0.04

A

с. 0.4L

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2
Q

How many liters are in 3 uL?
a. 0.003
b. 0.000003
с. 0.0000003
d. 0.000000003

A

b. 0.000003

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3
Q

How many micrograms are in 10 mg?
a. 100
b. 1000
с. 10000
d. 100000

A

с. 10000

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4
Q

How many grams are in 0.85 kg? a. 8.5
b. 85
c. 850
d. 8500

A

c. 850

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5
Q

25 Cis equivalent to how many degrees Fahrenheir?
a. 31.7
b. 45.9
с. 77
d. 102.6

A

с. 77

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6
Q

80°F is equivalent to how many Kelvin?
a. 285.4
b. 299.7
c. 353.0
d. 359.4

A

b. 299.7

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7
Q

How would you prepare a 1/5 dilution of a urine sample?
a. 1 part urine +3 parts diluent
b. 1 part urine+4 parts diluent
c. 1 part urine + 5 parts diluent
d. 1 part urine+ 6 parts diluent

A

b. 1 part urine+4 parts diluent

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8
Q

A 50-g/L solution was diluted 1:5. This diluted sample was then diluted 1:10. What is the concentration of the final solution?
a. 0.8 g/L
b. 1 g/L
c. 2.9 g/L
d. 3.3g/L

A

b. 1 g/L

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9
Q

How much diluent is needed to prepare 300 mL of a 0.2-M working solution from a 0.8-M stock solution?
a. 75 ml
b. 225 mL
с. 900 mL
d, 1200 mL

A

b. 225 mL

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10
Q

What is the molarity of a solution containing 2 mol of sodium in 400 mL of water?
a. 0.005 M
b. 0.5 M
с. 5 M
d. 50 M

A

с. 5 M

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11
Q

How many moles of glucose are in 300 mL of a 2-M
glucose solution?
a. 0.6
b. 6
с. 60
d. 600

A

a. 0.6

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12
Q

How many grams of NaCl are required to make 0.50 L of a 1.5-M NaCI solution? (MW of NaCI = 58.5 g/mol)
a. 4
b. 19.5
с. 44
d. 175.5

A

с. 44

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13
Q

What volume of diluent is in a 4-M solution containing 125.6 g of KCI (MW =74.5 g/mol)?
a. 0.42 L
b. 2.37 L
c. 6.74 L
d. 421 L

A

a. 0.42 L

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14
Q

What is the normality of a 2-L solution of 54.2 g
H≥S04 (MW = 98.0 g)?
a. 0.28 N
b. 0.56 N
c. 0.91 N
d. 1.11 N

A

b. 0.56 N

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15
Q

How many grams of NaCI (MW =58.5 g/mol) are in a 0.67-osmol/kg solution that was made from 3.0 kg of water?
a. 39.4
b. 59.1
c. 102.2
d. 236.4

A

b. 59.1

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16
Q

In the calculation of the mean, what does “n” represent?
a. The sum of the values
b. The number of values in the set
c. The average of the values
d. The middle number of the set

A

b. The number of values in the set

17
Q

What is the mode a reflection of in a data set?
a. The average of the individual values in the data set
b. The most frequent number in the data set
c. The average of the lowest and highest numbers in the data set
d. The number in the middle of the date set

A

b. The most frequent number in the data set

18
Q

Which of the following statistics is equivalent to the square root of the variance?
a. Coefficient of variation
b. Standard deviation
c. Sensitivity
d. Specificity

A

b. Standard deviation

19
Q

What is the midrange of the following data set: 10, 4, 6, 7, 12, 9, 14?

a. 7
b. 8.8
c. 9
d. 9.5

A

c. 9

20
Q

Which of the following is correct when rounding 2.25 to one decimal place?

a. 2.2
b. 2.3

A

a. 2.2

21
Q

What is the sum of the following figures:

0.125 + 3.45 + 32.981?

a. 36.556
b. 36.55
c. 36.56
d. 36.6

A

c. 36.56

22
Q

Which of the following represents the product of

(4x10^3) (6×10^2)

a. 10 × 105
b.10 x106
с. 24 × 105
d. 24 x 105

A

с. 24 × 10^5

23
Q

The closeness of a test value to the actual value describes which of the following?
a. Accuracy
b. Precision
c. Reproducibility
d. Reliability

A

a. Accuracy

24
Q

Which of the following Westgard rules is indicative of random error?
a. 1 3s
b. 2 2s
c. 4 1s
d. 10x

A

a. 1 3s

25
Q

Which of the following pairs of concepts are correctly matched?
a. Sensitivity: prevent false negatives :: specificity:
prevent false positives
b. Sensitivity: prevent false positives :: specificity:
prevent false negatives
c. Sensitivity: precision : specificity: accuracy
d. Sensitivity: coefficient of variation :: specificity:
standard deviation

A

a. Sensitivity: prevent false negatives :: specificity:
prevent false positives

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