You should always do A. form a hypothesis before performing an experiment also the other options cannot happen until after an experiment.
Answer:
which is 6160.506
Explanation:
32 grams of sulfur will contain 6.022 X 1023 sulfur atoms
No, because HPO₄ is a multi-atom ion and has its own name which is Hydrogen phosphate.
Ka for weak acids is ---> Ka= (X)²/ (initial- X)
initial= 0.0400 M
to find X, you can find the H concentration using pH
[H+]= 10^-pH
[H+]= 10^-1.80= 0.016 which is X
ka = (0.016)²/ (0.0400 - 0.016) = 0.011
