What mass of na2 38so4 has an activity of 10.0 mci

Assignment Help Chemical Engineering

Reference no: EM131158818

The curie (Ci) is a commonly used unit for measuring nuclear radioactivity: 1 curie of radiation is equal to decay events per second (the number of decay events from 1 g of radium in 1 s).

a. What mass of Na2 38SO4 has an activity of 10.0 mCi? Sulfur-38 has an atomic mass of 38.0 and a half-life of 2.87 h.

b. How long does it take for 99.99% of a sample of sulfur-38 to decay?

Reference no: EM131158818

Questions Cloud

Design and simulate wien bridge oscillator using ic op-amp : The objective of this assignment is to design and simulate Wien Bridge oscillator using IC Op-amp and calculate of its frequency oscillation.

What amount of heat is necessary to synthesize no2(g) : If 2.50 102 mL of N2(g) at 100.C and 3.50 atm and 4.50 102 mL of O2(g) at 100.C and 3.50 atm are mixed, what amount of heat is necessary to synthesize NO2(g)?

Researcher with ministry of transportation : A researcher with Ministry of Transportation is commissioned to study the drive times to work (one-way) for U.S. cities. The underlying hypothesis is that average commute times are different across cities.

Determining what evidence reveals to you about a crime : Describe the main actions that you intend to put into place to test the hypothesis that you proposed in Question 2. Describe the way in which you would evaluate the success of your program. Include the results that you would deem as a success and ..

What mass of na2 38so4 has an activity of 10.0 mci : The curie (Ci) is a commonly used unit for measuring nuclear radioactivity: 1 curie of radiation is equal to decay events per second (the number of decay events from 1 g of radium in 1 s).

Complain about the lack of scoring in soccer : American sports fans often complain about the lack of scoring in soccer. In particular, many Americans feel that scoreless ties occur way too often.

Define the precise ethical issue : Identify short-term, long-term, positive, and negative consequences for the major alternatives. The short-term gain or loss is often overridden when long-term consequences are considered. This step often reveals an unanticipated result of major im..

Identify and define the problem : 1. Identify and define the problem (and include literature review summary) 2. Determine set of alternative solutions 3. Determine criteria to be utilized to evaluate alternatives 4. Evaluate Alternatives

The diagnosis and treatment of thyroid disease : If a patient with thyroid disease consumes a sample of Na131I containing 10 of 131I, how long will it take for the amount of 131I to decrease to of the original amount?

User Account

All Pages