Answer:
1.12 moles of potassium
6.76x10²³ atoms of potassium
Explanation:
In order to <u>convert g of potassium to moles</u>, we need to use its <em>molar mass </em>(which we can find via the periodic table):
- Molar Mass of K = 39.09 g/mol
- 43.9 g K ÷ 39.09 g/mol = 1.12 mol K
Then, to <u>convert moles into atoms</u>, we use <em>Avogadro's number </em>(6.023x10²³ atoms per mole):
- 1.12 mol K * 6.023x10²³
= 6.76x10²³ K atoms
Answer:
number of moles of
=4.16mol
Explanation:
experiment data:
temperature=
=273+22 k=295k
pressure=1.007 atm
volume is missing so assuming volume-=100L
using ideal law relationship
ideal gas means gas which occupies negligible space and there is no interaction between the molecules of gases.
PV=nRT
put all the experimental data, we get
n=4.15 mol
number of moles of
=4.16mol
The atomic number is the number of protons in the nucleus
They are stronger than hydrogen bonding forces.