Answer:
Explanation:
ΔTemp => 35⁰C(108K) increases to 57.9⁰C(330.9L) => increases volume (Charles Law)
Use the Kelvin Temperature values in a ratio that will increase the original volume.
ΔVol = 6.33L(330.9/108.0) => gives a larger volume. Using 108.0/330.9 would give a smaller volume and would be contrary to what the problem is asking.
ΔPress => 342 mmHg increases to 821 mmHg => decreases volume (Boyles Law)
Use the pressure values in a ratio that will decrease the original volume.
ΔPress = 6.33L(342/821) => gives a smaller volume. Using 821/342 would give a larger volume and would be contrary to what the problem is asking.
Now, putting both ΔTemp together with ΔPress => net change in volume. (Combined Gas Law)
ΔVol = 6.33L(330.9/108.0)(342/821) = 8.08L (final volume of gas).
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This problem can also be worked using the combined gas law equation:
P₁V₁/T₁ = P₂V₂/T₂ => V₂ = P₁V₁T₂/T₁P₂
V₂ = [(342mm)(6.33L)(330.9K)]/[(108K)(821mm)] = 8.08L (final volume of gas)
A can is something made of aluminum
Answer:
During the lunar month, the Moon goes through all its phases. Just like the Earth, half of the Moon is lit by the Sun while the other half is in darkness. The phases we see result from the angle the Moon makes with the Sun as viewed from Earth.
Explanation:
Answer:
H2SO4
Explanation:
H2SO4 is actually one of the strongest acids, coming to a pH value very close to 1. Acids transfer their hydrogen ions to other substances, such as water, and usually have hydrogen in their formula. In this case, H2SO4 has hydrogen in its formula and is the acid in this case.
Answer:
1577 °C
Explanation:
Step 1: Calculate the volume of the cylinder
The diameter of the base (d) is 13.0 cm and the height (h) is 15.6 cm. We will use the following expression.
V = h × π × (d/2)²
V = 15.6 cm × π × (13.0 cm/2)² = 8.28 × 10³ cm³ = 8.28 × 10³ mL = 8.28 L
Step 2: Calculate the moles of BF₃
We have 0.0985 kg (98.5 g) of BF₃, whose molar mass is 67.81 g/mol.
98.5 g × 1 mol/67.81 g = 1.45 mol
Step 3: Convert 2.70 MPa to atm
We will use the conversion factor 1 MPa = 9.86923 atm.
2.70 MPa × 9.86923 atm/1 MPa = 26.6 atm
Step 4: Calculate the maximum safe operating temperature
We will use the ideal gas equation.
P × V = n × R × T
T = P × V / n × R
T = 26.6 atm × 8.28 L / 1.45 mol × (0.0821 atm.L/mol.K) = 1850 K
We can convert 1850 K to Celsius using the following expression.
°C = K - 273.15 = 1850 K - 273.15 = 1577 °C
