Answer:
True
Explanation:
According to Aufbau's principle "sublevels with lower energies are filled up before those with higher energies".
Sublevels do not fill up in numerical order but there is a certain manner in which they are filled. The pattern is shown below:
1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p e.t.c
We see that the 4s gets filled before the 3d sublevel.
<span>Energy is required in order to maintain homeostasis--without a constant, organized internal state, the cell will die.</span>
Answer:
19 protons, 20 neutrons and 18 electrons.
Explanation:
Answer:
10.42g
Explanation:
First you divide your sample by its molar mass, 250g÷15.999g which gives you around 15.63 moles. You get this because you are dividing your sample by its molar mass so for ever 15.999g it's 1 mol. Next you'll multiply 15.63 by 2 then divide it by 3 because that's the mole ratio of KIO3 and O2.