If there are options, they are b, c, and d. I've done this question in class before :)
Easy the partial pressure is the 0.9883 as the linguistic compound of the average element of the shell is the same as the boron
Homogeneous because it completely dissolved so its now one. Heterogeneous would be when they don't dissolve and you see 2 separate substances like sand in water.
Scientific law,it describes an observed pattern in nature
The force acting between two charged particles A and B is 5.2 x 105 newtons. Charges A and B are 2.4 x 102 meters apart. If the charge on particle A is 7.2 x 108 coulombs, what is the charge of particle B? (k 7 9.0 x 109 newton meters?/coulomb)