Answer:
2
Step-by-step explanation:
A. Moles before mixing
<em>Beaker I:
</em>
Moles of H⁺ = 0.100 L × 0.03 mol/1 L
= 3 × 10⁻³ mol
<em>Beaker II:
</em>
Beaker II is basic, because [H⁺] < 10⁻⁷ mol·L⁻¹.
H⁺][OH⁻] = 1 × 10⁻¹⁴ Divide each side by [H⁺]
[OH⁻] = (1 × 10⁻¹⁴)/[H⁺]
[OH⁻] = (1 × 10⁻¹⁴)/(1 × 10⁻¹²)
[OH⁻] = 0.01 mol·L⁻¹
Moles of OH⁻ = 0.100 L × 0.01 mol/1 L
= 1 × 10⁻³ mol
B. Moles after mixing
H⁺ + OH⁻ ⟶ H₂O
I/mol: 3 × 10⁻³ 1 × 10⁻³
C/mol: -1 × 10⁻³ -1 × 10⁻³
E/mol: 2 × 10⁻³ 0
You have more moles of acid than base, so the base will be completely neutralized when you mix the solutions.
You will end up with 2 × 10⁻³ mol of H⁺ in 200 mL of solution.
C. pH
[H⁺] = (2 × 10⁻³ mol)/(0.200 L)
= 1 × 10⁻² mol·L⁻¹
pH = -log[H⁺
]
= -log(1 × 10⁻²)
= 2
It is a reaction between an element and a compound that results in a different element and compound
Answer:
B. This explains how two noble gases' molecules can have an attractive force between them.
C. This explains why long hydrocarbon chains have relatively high boiling points.
Explanation:
Temporary dipole moments are weak intermolecular force of attraction between two or more compounds. They are the weakest of intermolecular forces. They form when non-polar molecules becomes polar due to the constant motion of their electrons. This may lead to an uneven charge distribution at an instant.
When this occurs, the molecule has a temporary dipole. The dipole can induce neighboring molecules to be distorted and form dipoles as well.
- Two noble gases can exhibit this bonding attraction usually when at low temperature. The temporary dipole cause a temporary charge separation and can lead to attraction.
- Long hydrocarbons of long chains also exhibits this bonding which can cause a rise in their boiling point.
- Ammonia and nitrogen gas will exhibit hydrogen bonding, a strong dipole - dipole attraction.
- Hydrogen fluoride and methanol has hydrogen bonds likewise dimethyl either and acetone.
I don't know which one I should answer
Answer:
As you begin your trip down the hill you increase your speed resulting in a transformation from potential energy to kinetic energy.
Explanation:
At the top of the mountain, you have potential energy. But as you start moving down the mountain, your speed increases and have a lot of kinetic energy.
