Jill and Susan violated safety procedures by not properly listening and/or reading over the instructions to know all the materials, steps, and equipment they need for the lab. Hope this helps!
I believe the answer is C.
Answer:
A. 3
Explanation:
Given
The atomic radius of Hydrogen rH = 53 pm
The atomic radius of Uranium rU = 156 pm
we apply
rU / rH = 156 pm / 53 pm
⇒ rU / rH = 2.943 ≈ 3
then
rU = 3*rH
The new trend will probably be the technology that's in that certain year. Like the trend in the modern days are all electronics or will have to do with electronics.
Shoutout to: @Grimmie