The pool being cooler at the deep end. Also the air closer to the roof of a house being cooler.
Answer:
1. B
2.C
3.D
4.Sorry don't this one :(
5.A
Explanation:
please give me at least 20 points ❤
The first thing we need to do here is to recognize the unit of molarity and the units of the given percentage of nitric acid.
Molarity is mol HNO3 / L of solution. This is our aim
The given percentage is 0.68 g HNO3/ g solution
multiplying this with density to convert g solution into mL solution and dividing with the molecular weight of HNO3 (63 g/mol) to convert g HNO3 to mol. Therefore we obtain
0.016 mol/ mL or 16.23 mol/ L (M)
It is called a cycle because it is repetitive, therefore making it a cycle (or almost never ending)
