Leisschdeadabee Leisschdeadabee

24-10-2016
Chemistry

contestada

if 165. mg of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active after 330 min ?

Respuesta :

syed514 syed514

01-11-2016

330 minutes =5 hours and 30 minutes= 3 half life's
After 1 - 62.5
After 2 - 31.15
After 3 - 15.625
hope it helps

Answer Link

Otras preguntas

How is a plateau similar to a plain?

An object has a weight of 5.10 Newtons (N) at sea level, where the acceleration due to gravity is 9.81 m/s2. What is the acceleration due to gravity on the obje

When two fractions are between 0 and 1/2, how do you know which fraction is greater? Explain

What characteristics separate algae from a) protozoans and b) plants?

Justin works as a car salesman. Last week he had a total of 42,000 dollars in sales. if his Commission is 2 percent how much did Justin earn and last week?

Harold's old school has 52 sixth graders and 39 seventh graders, what's the ratio of 6th graders to 7th graders in simplest form? (:

Point B is on the graph of the function f(x) = -3x2. If the x-coordinate of point B is 2, which ordered pair gives the location of point B?

Solve for " x " --- 20/x = 4/9 ? explain. (:

to meet the increased demand, world food production must rise 50% by 2030. Write this percent as a fraction in simplest form.

rocco wants to use the rest of the money in his savings account ($192) to buy a set of golf irons that has an original price of $350. does rocco have enough mon