Answer: synthesis
Explanation:the answer given earlier does have a comment on it correcting but I missed that the first time I visited this question.
Arrhenius Acid:
Arrhenius Acid is any specie which when dissolved in water produces H⁺ (proton) Ions.
Nitrous Acid:
Nitrous Acid also acts as Arrhenius Acid when dissolved in water.
HNO₂ + H₂O → NO₂⁻ + H₃O⁺
Where,
H₃O⁺ ⇆ H⁺ + H₂O
As HNO₂ produces H⁺ Ions in water, so it is an Arrhenius Acid.
Answer:
Explanation:
Hello!
In this case, since the reaction between calcium hydroxide and hydrochloric acid shows a 2:1 mole ratio between them:
We need to use the following mole ratio:
That can be written in volumes and concentrations:
Thus, we solve for the volume of HCl as it is the unknown:
Therefore, we plug in to obtain:
Best regards!
Answer:
1. 389 kJ; 2. 7.5 µg; 3. 6.25 days
Explanation:
1. Energy required
The water is converted directly from a solid to a gas (sublimation).
They don't give us the enthalpy of sublimation, but
The equation for the process is then
Mᵣ: 18.02
46.69 kJ + H₂O(s) ⟶ H₂O(g)
m/g: 150
(a) Moles of water
(b) Heat removed
46.69 kJ will remove 1 mol of ice.
2. Mass of water vapour in the freezer
For this calculation, we can use the Ideal Gas Law — pV = nRT
(a) Moles of water
Data:
V = 5 L
T = (-80 + 273.15) K = 193.15 K
Calculation:
(b) Mass of water
3. Time for removal
You must remove 150 mL of water.
It takes 1 h to remove 1 mL of water.
Answer:
Food gets broken down.
Explanation:
The teeth cut and help crush the food in our mouths while mixing it with saliva. This helps make it easier to swallow and digest.