the electronegativity difference (AEN):
<0.5: covalent (non polar)
0.5- 1.7: covalent (polar)
> 1.7 : ionic
BaCl₂
Ba = 0.9
Cl = 3
Cl - B = 3 - 0.9 = 2.1 (ionic)
The number of moles of a gas if it occupy a volume of 4dm at 10 atm and - 200 c is 6.67 moles
calculation
by use of ideal gas equation
that is PV =nRT
where P(pressure) = 10 atm
V( volume) = 4dm^3 = 4L
n(number of moles) =?
R(gas constant) = 0.0821 L.atm/mol.K
T = -200 +273 = 73 K
make n the formula of the subject n = PV/RT
n is therefore = (10 atm x 4l)/(0.0821 L.atm/mol.K x 73 K) = 6.67 moles
Answer:
B - Covalent bonds
Explanation:
Covalent bonds are a class of chemical bonds where valence electrons are shared between two atoms, typically two nonmetals. The formation of a covalent bond allows the nonmetals to obey the octet rule and thus become more stable.
Answer:
because the molecules don't fit into each other
Answer:
The correct answer will be "".
Explanation:
We have:
Moles of solute (Na₂Co₃) =
=
=
Now,
The volume of the solution will be:
⇒
∴
The formula to find the concentration will be:
⇒
On substituting the given values, we get
⇒
⇒