Answer is: ammonia experience only dispersion intermolecular forces with BF₃ (boron trifluoride) because BF₃ is only nonpolar molecule (vectors of dipole moments cansel each other, dipole moment is zero).
The London dispersion force (intermolecular force) <span>is a temporary attractive </span>force between molecules.
Answer: 240 mL
Explanation:
(20 kPa)(300 mL) = (25 kPa)V2
V2 = 240 mL
Or my way which was
300 mL / 25 kPa =12
12(5)=60
300-60=240mL
<u>Answer:</u> The amount of heat released for 5.25 moles of hydrogen peroxide decomposed is 1032.15 kJ
<u>Explanation:</u>
We are given:
Heat released in the reaction = 196.6 kJ per mole of hydrogen peroxide
Heat released for 2 moles of hydrogen peroxide decomposed =
<u>Sign convention of heat:</u>
When heat is absorbed, the sign of heat is taken to be positive and when heat is released, the sign of heat is taken to be negative.
The chemical equation for the decomposition of hydrogen peroxide follows:
We are given:
Moles of hydrogen peroxide decomposed = 5.25 moles
By Stoichiometry of the reaction:
2 moles of hydrogen peroxide decomposed, the amount of heat released is 393.2 kJ
So, when 5.25 moles of hydrogen peroxide decomposed, the amount of heat released will be =
Hence, the amount of heat released for 5.25 moles of hydrogen peroxide decomposed is 1032.15 kJ
pH of the Sr(OH)₂ solution : 12.6
<h3>Further explanation </h3>
pH is the degree of acidity of a solution that depends on the concentration of H⁺ ions. The greater the value the more acidic the solution and the smaller the pH.
pH = - log [H⁺]
Sr (OH) ₂ solution is a base with valence 2, so we determine the pOH from the OH ion concentration - which is expressed by pOH = - log [OH -]. After that we determine the pH value from the relationship:
[H⁺] [OH⁻] = Kw=10⁻¹⁴
pH + pOH = 14
Sr(OH)₂⇒Sr²⁺+2OH⁻
From equation [Sr(OH)₂] : [OH⁻]=1 : 2, so [OH⁻]=
If an atom has 3 energy levels it should have 3 sublevels