Multiple choice questions in nuclear chemistry

Assignment Help Chemistry

Reference no: EM1317025

Multiple choice questions in nuclear chemistry.

1. Magnesium-28 decays via beta emission, which equation represents the balanced nuclear equation?

A.12Mg28 à -1e0 + 14Si28

B.2Mg28 à 2He4 + 10Ne28

C.12Mg28 à 1n0 + 13Al28

D.12Mg28 à -1e0 + 13Al28

E.none of the above

2. Complete the nuclear equation by 86Rn220 à 2He4 + ______ writing the symbol of the missing particle:

A.84Po216

B.84Po214

C.82Pb218

D.82Pb222

E.none of the above

3. Silicon-26 decays via positron emission, which equation represents the balanced nuclear equation?

A.14Si26 à -1e0 + 13Al26

B.14Si26 à 2He4 + 13Al26

C.14Si26 à 1e0 + 13Al28

D.14Si26 à 1e0 + 13Al26

E.none of the above

4. Complete the nuclear equation 10Ne19 à 1e0 + ______ by writing the symbol of the missing particle:

A.9F18

B.10Ne18

C.9F19

D.10Ne19

E.none of the above

5. Argon-37 decays via electron capture emission, which equation represents the balanced nuclear equation?

A.18Ar37 à -1e0 + 17Cl37

B.18Ar37 + -1e0 à 17Cl37

C.18Ar37 + 1e0 à 17Cl37

D.18Ar37 + -1e0 à 16S37

E.none of the above

6. 131I decays with a t1/2 = 8.07 hrs. If we begin with 3.0 mg, how much remains after 6 half-lives?

A.0.0469 mg

B.0.0234 mg

C.0.50 mg

D.0.25 mg

E.0.01875

7. The half-life of Pa-234 is 6.75 hr. Approximately what fraction of a sample of isotope remains after

20.25 hours?

A.¼

B.1/8

C.1/16

D.1/3

E.½

8. The half-life of Rn-222 is 3.823 day. What was the original mass of a sample of this isotope if 0.0500 g

remains after 7.646 day?

A.0.398 g

B.0.199 g

C.0.085 g

D.0.800 g

E.0.042 g

9. The half-life of Th-227 is 18.2 day. How many days are required for 0.70 of a given sample to decay?

A.4 days

B.16 days

C.32 days

D.64 days

E.128 days

10. An object taken from a cave has a carbon-14 fraction which is 0.89 of the amount in a living organism.

How old is the object? (half-life for C-14 is 5730 yr)

A.240 yrs

B.480 yrs

C.960 yrs

D.1920 years

E.3840 years

Reference no: EM1317025

Questions Cloud

Make nuclear fission more efficient : Multiple choice questions in Nuclear reactions - make nuclear fission more efficient, which device is used in a nuclear reactor to slow the speed

Computing the unit cost growth from given data : Elizabeth Corday, a quality control supervisor for Surgery Products, Inc., Compute the unit cost growth rate using the constant rate of change model with continuous compounding.

Explain finding the required rate of return : Explain Finding the required rate of return and valuation of Preferred Stock

Linear equations by substitution method : Linear Equations by substitution method

Multiple choice questions in nuclear chemistry : Multiple choice questions in nuclear chemistry - which equation represents the balanced nuclear equation

Productive and allocative efficiency of monopoly firm : Use the price-cost formula to determine whether or not the firm's operations are productively-efficient. (e) Use the price-cost formula to determine whether or not the firm's operations are allocatively efficient.

Identify long-term factors : MBA 640 Exam 1: Spring 1, 2014: Determine whether Deep Blue should accept this special sales order. Identify long-term factors Deep Blue should consider in deciding whether to accept the special sales order.

Accessing link support in circuit switching : If circuit switching is utilized, how many user can this access link support?

Using schedule performance index : Use the CPI to determine the estimate at completion (EAC) for this project. Describe whether project is performing better or worse than planned? Use the schedule performance index (SPI) to estimate how long ~ will take in order to finish this proje..

User Account

All Pages