Answer:
STANDARD: 0.085 mi, 450 ft, or 150 yds
METRIC: 0.137 km, 137.16 m, or 13716 cm
Explanation:
Answer:
carbon dioxide in the atmosphere
Explanation:
Carbon dioxide in the atmosphere is the major cause of greenhouse effect.
Greenhouse effect is the main cause of global warming.
- This effect is produced as a result of some certain gases called greenhouse gases.
- These gases are carbon dioxide, water vapor, methane etc.
- They prevent short wave radiations from leaving the earth.
- This causes the increase in temperature of the surface.
Answer: 8.45 L
Explanation:
Given that,
Initial volume (V1) = 3.5L
Initial pressure (P1) = 2.5 atm
[Since final pressure is given in torr, convert 2.5 atm to torr
If 1 atm = 760 torr
2.5 atm = 2.5 x 760 = 1900 torr
Final volume (V2) = ?
Final pressure (P2) = 787 torr
Since pressure and volume are given while temperature remains the same, apply the formula for Boyle's law
P1V1 = P2V2
3.5L x 1900 torr = 787 torr x V2
6650L•torr = 787 torr•V2
Divide both sides by 787 torr
6650L•torr/787 torr = 787 torr•V2/787 torr
8.45 L = V2
Thus, the volume of the gas at 787 torr and at the same temperature is 8.45 Liters
Answer:
NH₄Cl form closer to the end of the tube from which HCl was released.
Explanation:
Ammonia and hydrogen chloride gas react to form ammonium chloride water which can be seen by the formation of intensified fumes.
HCl + NH₃ ⇒ NH₄Cl
Since, the ammonia gas has a lower molecular weight as compared to that of hydrogen chloride gas. According to Graham's law of diffusion, the diffusion rate is inversely proportional to the square root of the molecular mass of the gas. <u>Thus, ammonia will diffuse faster as compared to hydrogen chloride gas. So, the white fumes will form at the side of the hydrogen chloride gas as it's diffusion will be slower and ammonia will diffuse fast and reaches to the gas.</u>
Answer:
- <em>If the volume is doubled and the pressure is tripled, </em><em><u>the temperature changes by a factor of 6.</u></em>
Explanation:
Since, for ideal gases the temperature is in direct relation to the volume and the pressure, you can predict that if the volume is doubled and the pressure is tripled the effect on the temperature will be 3 × 2 = 6 times.
You can prove it using the combined law of gases:
Where the letters P denote absolute pressures, the letters T denote temperature measured in absolute scale, and the letters V denote volume.
The changes given may be written it this way:
Then, you can write T₂ in terms of the other variables:
- T₂ = (P₂ V₂ T₂) / (P₁ V₁) = 3P₁ 2V₁ T₂ / (P₁V₁)
Cancel the common factors P₁ and V₁
Which proves that the final temperature is 6 times the initial temperature.