Answer:
hope it's helpful to you .
your 9th question is wrong but I did it correctly
it's not BaS2 it's BaS
Answer:
1370moles
Explanation:
Given parameters:
Number of molecules in methane = 8.25 x 10²⁶molecules
Unknown:
Number of moles of methane = ?
Solution:
A mole of any substance contains the Avogadro's number of particles which is 6.02 x 10²³molecules;
6.02 x 10²³ molecules is contained in 1 mole of a substance
8.25 x 10²⁶molecules of methane will contain = 1370moles
There’s 1,000 grams per liter. I’ll help you out by giving you the formula.
0.50L over 5.00 M= 1,000grams over one liter
Answer:
21 electrons
Explanation:
just subtract their atomic numbers since the atomic number has the same amount of electrons as it has protons