lolgirl99392 lolgirl99392

26-04-2024
Chemistry

contestada

The isotope cobalt-57 has a half-life of 272 d. How long will it take a sample of cobalt-57 to decay to 38% of its original activity? Radioactive decay follows first order kinetics.
(A) 103 d
(B) 337 d
(C) 188 d
(D) 380 d

Respuesta :

Otras preguntas

If a= 3 and b= -1, what is the value of ab-b’2?

A baby gains 11 lb in its first year of Life the baby games 4 and 1/4 lb during the first 4 months and three and a half pounds in its second 4 months how much d

can someone help me with these science questions plz?Question 2 which atom will have a positive charge after it becomes a ionA.flourineB. SulfurC.chlorineD.sodi

Canceled cheques are negotiable at the bank for the face value. True False

Which combinations of traits would be possible in future generations if the genes for fur color and eye color assort independently? Select all possibilities. b

The perimeter of a △ABC equals 12 in. The midpoints of the sides M, N and K are connected consecutively. Find the perimeter of △MNK.

Â· Fought a major war against the British in the late 1800s Â· Known for their military tradition as well as their artistic beadwork Â· Their language shares th

Given ∠9≅∠13.Which lines, if any, must be parallel based on the given information? Justify your conclusion.c∥d, Converse of the Same-Side Interior Angles Theore

When air is inhaled, it quickly becomes saturated with water vapor as it passes through the moist upper airways. when breathing dry air, about 25 mg of water ar

Which combinations of traits would be possible in future generations if the genes for fur color and eye color genes are closely linked? Select all possibilities