Ask Question, Ask an Expert


Ask Chemistry Expert

Multiple choice problems in Nuclear reactions.

1. To make nuclear fission more efficient, which device is used in a nuclear reactor to slow the speed of neutrons?
i.internal shield
ii.external shield
iii.control rod
v.none of the above

2. In nuclear reactions:
a.small amounts of mass are converted to a large amount of energy
b.mass and energy are destroyed
c.large amount of energy are converted to small amount of mass
d.small amount of mass are converted to large amounts of mass
e.None of the above

3. Which radioactive emanations have a charge of -1?
B.gamma rays
C.alpha particles
D.beta particles
E.none of the above

4. Which sample will decay least over a period of 30 days?
A.10 g of Au-198
B.10 g of I-131
C.10 g of P-32
D.10 g of Rn-222
E.cannot be determined

5. Which nuclide is a radioisotope used in the study of organic reaction mechanisms?

6. Complete the equation 82Pb211 à -1e0 + ¬¬¬¬¬_______ by writing the symbol of the missing particle:
D.82Pb211 +
E. none of the above

7. Plutonium-242 decays via alpha emission, which equation represents this balanced nuclear equation?
A.94Pu242 à 2He4 + 92U236
B.94Pu242 à 2He4 + 92U238
C.94Pu242 à 1n0 + 92U238
D.94Pu242 à 2He4 + 92Pb238
E. none of the above

8. Complete the nuclear equation 73Ta177 electron capture à by writing the symbol of the missing particle:
E. none of the above

Chemistry, Academics

  • Category:- Chemistry
  • Reference No.:- M918994

Have any Question? 

Related Questions in Chemistry

Using the following data calculate the pressure of 1000mol

Using the following data, calculate the pressure of 100.0mol of CO(g) in a 40.0L container at 25 degrees Celcius using both the ideal gas equation and the real gas equation. Why are these two values so different? (aCO=14 ...

A 06745 gram sample of khp reacts with 4175 ml of koh

A 0.6745 gram sample of KHP reacts with 41.75 mL of KOH solution for complete neutralization. What is the molarity of the KOH solution? (Molecular weight of KHP = 204 g/mol. KHP has one acidic hydrogen.)

1if you wish a buffer to have a ph of 1000 what is the

1. If you wish a buffer to have a pH of 10.00, what is the desired [H 3 O + ]? 2. In the buffer from 6, you want to select a weak acid (one of the conjugate pair) with a Ka close to that value of [H 3 O + ]. Explain why, ...

Analyzed individually two solutes have retention times of

Analyzed individually, two solutes have retention times of 17 s and 21 s with peak widths at half-maximum (w1/2) of 1.9 s and 2.8 s, respectively. If the two solutes are analyzed together, what would be the resolution on ...

Calculate the amount of work done for the conversion of 100

Calculate the amount of work done for the conversion of 1.00 mole of Ni to Ni(CO)4in the reaction below, at 75oC. Assume that the gases are ideal. The value of R is 8.31 J/molK.

Discussion 1 in this discussion consider how fats are

Discussion 1: In this discussion, consider how fats are digested and utilized in the body. Address the following questions: What enzyme is necessary for fat digestion?  Where is this enzyme produced and where does fat di ...

Jenny and mark complete a reactivity experiment by placing

Jenny and Mark complete a reactivity experiment by placing samples of metals into water. They initially place small shards of potassium into water and observe that hydrogen gas and potassium hydroxide solution are produc ...

Calculate the change in internal energydelta e for a system

Calculate the change in internal energy(delta E) for a system that is giving off 25.0kJ of heat and is changing from 6.00L to 12.00L in volume at 1.50atm pressure. (101.3J=1 L*atm) The answer is supposed to be -25.9kJ Ca ...

A sealed container holds 100 mole of helium and 200 moles

A sealed container holds 1.00 mole of helium and 2.00 moles of nitrogen at 30.0°C. When the total pressure of the mixture is 666 mm Hg, what is the partial pressure of the nitrogen in mm Hg? Provide an answer correct to ...

Determine the percent yieldwith respect to co2 and ch4 of

Determine the percent yield(with respect to CO2 and CH4) of the reaction if 1.25g of CO2 was formed by reacting 2.50g of CH4(g) with excess O2 in the reaction: CH4(G) +O2(g) ---->CO2(g) +H2O(g).

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro