The volume : V = 45.22 L
<h3>Further explanation</h3>
Given
Moles = n = 2
Pressure = P = 780 torr = 1,02632 atm
Temperature = T = 10 + 273 = 283 K
Required
Volume
Solution
Ideal gas law : PV = nRT
where
P = pressure, atm
V = volume, liter
n = number of moles
R = gas constant = 0.08206 L.atm / mol K
T = temperature, Kelvin
Input the value :
V = (nRT)/P
V = (2 x 0.082 x 283)/1,02632
V = 45.22 L
Answer:
the pressure decreases because there is a sudden lack of air. some times, cans will crush if the air is sucked out; this is because the pressure on the outside is greater than the inside
The valence electrons are determined by the column that the element falls in.
Column 1 has 1 valence electron
Column 2 has 2 valence electrons
Column 13 has 3 valence electrons
Column 15 has 5 valence electrons
column 16 has 6 valence electrons
column 17 has 7 valence electrons
Elements are trying to become stable by filling the outer energy level. Columns 1,2,3 do this by losing 1,2 or 3 electrons and becoming positive ions. +1, +2, +3, respectively
Columns 15, 16, 17 do this by taking those electrons and becoming negative ions. -3, -2, -3. respectively.
Conservation of mass is the underlying principle of balancing equation. When we balance equation, this means that we acknowledge that before and after the chemical reaction, the elements are conserved. To balance the chemical equation, we add coefficients before each reactant and product. Here are the following answers:
Reaction 1:
<span>2Al
3ZnCl2
3Zn
2AlCl3
Reaction 2:
</span><span>4NH3
3O2
2N2
6H2O</span>
