54- A
55- B
56- A
57- C
58- C
Answer:
0.74 atm.
Explanation:
From the question given above, the following data were obtained:
Pressure of Ne (Pₙₑ) = 1.52 atm
Pressure of He (Pₕₑ) = 766 mmHg
Total pressure (Pₜ) = 3.27 atm
Pressure of Ar (Pₐᵣ) =?
Next, we shall convert the pressure of He from mmHg to atm. This can be obtained as follow:
760 mmHg = 1 atm
Therefore,
766 mmHg = 766 mmHg × 1 atm / 760 mmHg
766 mmHg = 1.01 atm
Finally, we shall determine the partial pressure of Ar. This can be obtained as follow:
Pressure of Ne (Pₙₑ) = 1.52 atm
Pressure of He (Pₕₑ) = 1.01 atm
Total pressure (Pₜ) = 3.27 atm
Pressure of Ar (Pₐᵣ) =?
Pₜ = Pₙₑ + Pₕₑ + Pₐᵣ
3.27 = 1.52 + 1.01 + Pₐᵣ
3.27 = 2.53 + Pₐᵣ
Collect like terms
3.27 – 2.53 = Pₐᵣ
Pₐᵣ = 0.74 atm
Thus the partial pressure of Ar is 0.74 atm.
Answer:
Dana filtered the sample and larger granules of the sample were left behind.
Explanation:
If a substance is pure, it will have a uniform composition throughout. It will not separate into particles of various sizes.
One of the characteristics of pure substances is that they are homogeneous. A mixture is definitely made up of particles of various sizes.
Since the particles was filtered and larger granules were left behind, the sample has been separated by a physical method (filtration). Only a mixture can be separated by physical methods. It is not a pure substance.
Answer:
A.It is the same for every sample of a single substance.
Explanation:
The first one, <span>6H2O + 6CO2 → 6O2 + C6H12O6 is.</span>
