Homework Help: Chemistry

Posted by Sharon on Wednesday, January 26, 2011 at 12:01am.

1. Write balanced equations for each of the following processes.
a. Chromium- 51, which targets the spleen and is used as a tracer in studies of red blood cells, decays by electron capture.

b. Iodine-131, used to treat hyperactive thyroid glands, decays by producing a beta particle.

2. In each of the following nuclear reactions, supply the missing particle?
a. ^60Co -> ^60Ni + ?
b. ^97Tc + ? -> ^97Mo
c. ^99Tc -> ^99Ru + ?
d. ^239Pu -> ^235U + ?

3. A chemist wishing to do an experiment requiring 47Ca (half life = 4.5 days) needs 5.0駪 of the
nuclide. What mass of 47Ca must be ordered if it takes 48 h for delivery from the supplier? Assume that the atomic mass of ^47Ca iis 47.0

4. What is the ratio of ^209Pb/^238U by mass in a rock that is 4.5x10^9 years old? (For 238 U, t1/2= 4.5x10^9 years)

Chemistry - Sharon, Thursday, January 27, 2011 at 12:47am
Please help me.

Answer this Question

Related Questions

Chemistry - 1. Write balanced equations for each of the following processes. a...
Chemistry! - 1. Write balanced equations for each of the following processes. a...
Chemistry - Write balanced equations for the following reactions. Express your ...
Chemistry PLZ HELP!!!!! - write balanced equations of hydrogen with the ...
Chemistry PLZ HELP!!!!! - write balanced equations of hydrogen with the ...
science - To 90.0mL of a solution that contains 0.100M Cr(NO3)2 and 0.490M HNO3 ...
HHEELLPP!!!!!!!!!!!!!!!!! - can anyone write a real world situation that can be ...
chemistry-balanced redox equations - Use the following steps to balance the ...
general chem - Using the activity series (Table 4.5), write balanced chemical ...
chemistry - Write balanced equations for the following: K3P + Ge = Al2(CO3)3 + ...

For Further Reading

First Name:
School Subject:
Answer: