s9036169 s9036169

13-11-2020
Chemistry

contestada

Technetium-104 has a half-life of 18.0 minutes. How much of a 165.0 g sample remains after 36.0 minutes?

Respuesta :

quasarJose quasarJose

14-11-2020

Answer:

41.25g

Explanation:

Given parameters:

Half-life of Technetium - 104 = 18minutes

Mass = 165g

Unknown:

Mass of sample remaining after 36minutes = ?

Solution:

The half-life of a radioactive element is the time taken for half of the element to decay;

Now;

Start First half life Second half-life

Time 0 18min 36min

Mass 165g 82.5g 41.25g

Answer Link

Otras preguntas

temperature is a measure of the amount of heat in a substance , true or false

While writing in a persuasive piece, which appeal should you use to evoke emotions in your audience ?

Given: AB tangent to circle O at B, and secant through point A intersect the circle at points C and D. Find CD, if AB = 4 cm, AC = 2 cm;

SOMEONE PLEASE HELP ASAP

If rust is scraped off a nail, and the nail is shiny on the inside, the inside was A. chemically changed also. B. not chemically changed. C. physically a

In the equation below, a and b are constants. If a = b, what is the value of x in terms of y ? 2xa=8yb Select one: A. 13y B. 3y C. 8y D. y

Which of the following is not a noncommercial food service operation? hotel dining room school dining hall hospital cafeteria ballpark hot dog vendor

which of the following laws best illustrates the Jewish emphasis on personal responsibility? A.Everyone must eat only food that are kosher (clean) and avoids ot

at a school assembly three out of the first 10 students were wearing spirit wear based on this information if 400 students were at the assembly, then how many s

why has traditional Lenka poetry changed? A. the original materials are no longer available B. the artists are no longer available C. to suit modern tastes D.