(a) Interpretation: The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% ( σ R c / R c < 0.05 ) . The total number of count is to be determined when the counting rate is 50cpm. Concept introduction: The formula for the standard deviation for the corrected counting rate is given as- σ R c = R x t x + R b t b ……. (1) Where, R x = counting rate for sample R b = counting rate for background t x = time required for counting rate for sample t b = time required for counting rate for background σ R c = standard deviation for the corrected counting rate Relative standard deviation is represented by the following formula- = σ R c R c …… (2) Also, R c = R x − R b

Question

Want to see the full answer?

Answer 1

Question

Chapter 32, Problem 32.8QAP

Interpretation Introduction

(a)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 50cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Interpretation Introduction

(b)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 300cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

For the determination of iron in used jet engine oil, 30 analyzes with 3 repetitions each were made by atomic absorption method and the standard deviation was found s=2.4 µg Fe/mL. Since this standard deviation value is close to the ϭ value, the iron concentration of 18.5 µg Fe/mL(a) by a single analysis,(b) as the average of the two analyzes,(c) Calculate the 80% and 95% confidence intervals if found as the mean of four analyses.

8) Two different analytical methods are compared for determining Ca. The following are two sets of data. Set 1 Set 2 155.779 155.784 155.787 155.787 155.813 155.765 155.781 155.793 i. i. Determine the mean and the standard deviation in Set 1. Calculate the 95% confidence limit for data in Set 1. Identify a possible outlier in Set 2. Use the Q-test to determine whether it can be retained or rejected at 95% confidence level. ii.

A solution is prepared by weighing 5.0000 g of cesium iodide into a 100-mL volumetric flask. The balance used has a precision of 0.2 mg reported as a standard deviation, and the volumetric flask could be filled with a precision of 0.15mL also reported as a standard deviation. What is the estimated standard deviation of concentration (g/mL)?

Answer 2

Question

Chapter 32, Problem 32.8QAP

Interpretation Introduction

(a)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 50cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Interpretation Introduction

(b)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 300cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 32, Problem 32.8QAP

Interpretation Introduction

(a)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 50cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Interpretation Introduction

(b)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 300cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 32, Problem 32.8QAP

Interpretation Introduction

(a)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 50cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Interpretation Introduction

(b)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 300cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 32, Problem 32.8QAP

Interpretation Introduction

(a)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 50cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Interpretation Introduction

(b)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 300cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Answer 6

Chapter 32, Problem 32.8QAP

Interpretation Introduction

(a)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 50cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Answer 7

Chapter 32, Problem 32.8QAP

Interpretation Introduction

(a)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 50cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Answer 8

Interpretation Introduction

(b)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 300cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Answer 9

Interpretation Introduction

(b)

Interpretation:

The counting rate 9cpm is the background counting rate in the laboratory which was measured at the time period of 3 min and it is required that the value of standard relative deviation should be less than the 5% (σRc/Rc<0.05). The total number of count is to be determined when the counting rate is 300cpm.

Concept introduction:

The formula for the standard deviation for the corrected counting rate is given as-

σRc=Rxtx+Rbtb ……. (1)

Where,

Rx = counting rate for sample

Rb = counting rate for background

tx = time required for counting rate for sample

tb = time required for counting rate for background

σRc = standard deviation for the corrected counting rate

Relative standard deviation is represented by the following formula-

=σRcRc …… (2)

Also,

Rc=Rx−Rb

Answer 10

Expert Solution & Answer

Answer 11

Expert Solution & Answer

Answer 12

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 13

Ch. 32 - Identify X in each of the following nuclear...Ch. 32 - Prob. 32.2QAP Ch. 32 - Prob. 32.3QAP Ch. 32 - Prob. 32.4QAP Ch. 32 - Prob. 32.5QAP Ch. 32 - Prob. 32.6QAP Ch. 32 - Prob. 32.7QAP Ch. 32 - Prob. 32.8QAP Ch. 32 - Prob. 32.9QAP Ch. 32 - Prob. 32.10QAP

Solution Summary: The author explains that the counting rate 9cpm is the background count rate in the laboratory which was measured at the time period of 3 min.

Want to see the full answer?

Chapter 32 Solutions