2.11x10^24 Ca atoms
In order to find the amount of atoms we must use Avogadro’s number, 6.022 x 10^23
Since we have moles, 3.5 the equation would look like this
3.5 moles Ca x 6.022x10^23/1 = 2.1077 x 10^24, which we round to 2.11 x 10^24 atoms of Ca
Using Daltons Law which states that the total pressure of a gas mixture is the sum of the gasses partial pressure.Thus,
Pt(total pressure)= P1+P2+P3
where
Pt= 0.90 atm
P1= 0.26 atm
P2 = 0.28 atm
P3 = ?
substitute the formula with known variables
P3= 0.90 atm-(0.26atm+0.28atm)
P3 = 0.36 atm
The partial pressure of ammonia is 0.36 atm
Tin(II) fluoride or stannous fluoride
Liquids and gases. Hope that helps!
Answer:
1. 18 protons
2. Argon
3. 18 electrons
4. 8 electron
5. Neutral Atom
Explanation:
count the number of electrons on the shells, number of electrons is equal to the number of protons for a neutral Atom.
since the number of proton is 18 then the element is Argon which has an atomic number of 16.
