23 Sandwiches
Slices of cheese
6 slices of bread
0 slices of cheese
I think this is right.
Hope this helps :)
Atomic mass of Potassium = Mass of 1 atom of Potassium = 39.1 amu
Then
Mass of 6.02 x 1023 atoms of potassium = 39.1 x 6.02 x 1023 amu
=
We already know that
1 mole = 6.02 x 1023 atoms
Also
Number of mole = mass in grams/ atomic mass
Then
Mass in gram = Number of mole x atomic mass
= (39.1 x 6.02 x 1023)/(6.02 x 1023)
= 39.1 g
The correct option among all the options that are given in the question is the third option or option "B".
Answer: A
Happens when familiar things are selectively ignored.
The [Oh-] in the solution with a POh of 11.25 is 5.623 x 10^-12 M
<u><em>calculation</em></u>
POH= - log [ OH-]
Therefore - log [oH-] =11.25
To calculate [oh-] concentration find the antilog of 11.35
= 10^- 11.25 = 5.623 x 10^-12 M
It is aluminium as it’s in the 13th group, which mean it has 3 valence electrons