5. Ten analyses of the concentration of albumin gave a mean of 20.92 g/1 and a standard deviation of 0.45 g/1. Calculate the 95% confidence interval of the mean. (a) 20.92 + 0.07 (b) 20.92 + 0.15 (c) 20.92 + 0.64 (d) 20.92 + 0.32

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5. Ten analyses of the concentration of albumin gave a mean of 20.92 g/1 and a
standard deviation of 0.45 g/l, Calculate the 95% confidence interval of the mean.
(a) 20.92 + 0.07
(b) 20.92 +0.15
(c) 20.92 + 0.64
(d) 20.92 + 0.32
6. How many grams of Pbl, will dissolve in 0.500 L of 0.0634 M Nal?
(a) 4.08 x 10-4
(b) 6.58 x 10-5
(c) 7.54 x 10-
(d) 2.96 x 10-3
7. Calculate the ionic strength of 0.060 M FeCla.
(a) 0.98
(b) 0.36
(c) 0.75
(d) 1.38
8. 50.00 mL of 0.100 M NaCI solution is titrated with 0.100 M AGNO,. Calculate the
chloride ion concentration after the addition of 60.00 mL of AgNO,.
(a) 2.36 x 10-0
(b) 1.10 x 10-8
(c) 4.50 x 10-10
(d) 5.88 x 10-8
9. Calculate the potential of the following electrochemical cell under the given
conditions:
Pt/TiO?+(0.20 M),Ti** (0.10 M), H*(0.0020 M)||SO,-(0.20 M), PbSO.(s)|Pb
(a) 0.244 V
(b) -0.244 V
(c) -0.335 V
(d) -0.133 V
Transcribed Image Text:5. Ten analyses of the concentration of albumin gave a mean of 20.92 g/1 and a standard deviation of 0.45 g/l, Calculate the 95% confidence interval of the mean. (a) 20.92 + 0.07 (b) 20.92 +0.15 (c) 20.92 + 0.64 (d) 20.92 + 0.32 6. How many grams of Pbl, will dissolve in 0.500 L of 0.0634 M Nal? (a) 4.08 x 10-4 (b) 6.58 x 10-5 (c) 7.54 x 10- (d) 2.96 x 10-3 7. Calculate the ionic strength of 0.060 M FeCla. (a) 0.98 (b) 0.36 (c) 0.75 (d) 1.38 8. 50.00 mL of 0.100 M NaCI solution is titrated with 0.100 M AGNO,. Calculate the chloride ion concentration after the addition of 60.00 mL of AgNO,. (a) 2.36 x 10-0 (b) 1.10 x 10-8 (c) 4.50 x 10-10 (d) 5.88 x 10-8 9. Calculate the potential of the following electrochemical cell under the given conditions: Pt/TiO?+(0.20 M),Ti** (0.10 M), H*(0.0020 M)||SO,-(0.20 M), PbSO.(s)|Pb (a) 0.244 V (b) -0.244 V (c) -0.335 V (d) -0.133 V
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