3)
A radioactive isotope of potassium (K) has a half-life of 20 minutes. If a 40.0 gram sampl...
Mathematics, 21.03.2020 02:17 daniellecraig77
3)
A radioactive isotope of potassium (K) has a half-life of 20 minutes. If a 40.0 gram sample of this isotope is allowed to decay for 80 minutes, how many grams of the radioactive isotope will remain?
A) 2.5 grams
B) 5.0 grams
C) 10.0 grams
D) 40.0 grams
Answers: 2
Mathematics, 21.06.2019 18:30
The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base
Answers: 1
Mathematics, 21.06.2019 18:50
The volume of a cone is 37x3 cubic units and its height is x units. which expression represents the radius of the cone's base, in units? 1 s o 3x o 6x obx 93x2
Answers: 1
Mathematics, 21.06.2019 19:50
If the scale factor between two circles is 2x/5y what is the ratio of their areas?
Answers: 3
Mathematics, 21.06.2019 20:50
Find the missing variable for a parallelogram: a = latex: 32in^2 32 i n 2 h = b = 6.3 in (1in=2.54cm)
Answers: 2
History, 27.06.2019 15:30
Mathematics, 27.06.2019 15:30
History, 27.06.2019 15:30
Mathematics, 27.06.2019 15:30
Chemistry, 27.06.2019 15:30
Mathematics, 27.06.2019 15:30
Mathematics, 27.06.2019 15:30
History, 27.06.2019 15:30
English, 27.06.2019 15:30
Mathematics, 27.06.2019 15:30
History, 27.06.2019 15:30
Mathematics, 27.06.2019 15:30