Answer:
vHe / vNe = 2.24
Explanation:
To determine the velocity of an ideal gas, one should apply the formula:
v = √3RT / √M
In this equation, R represents the gas constant (8.314 kgm²/s²molK); T refers to temperature, and M indicates the molar mass of the gas (4x10⁻³kg/mol for helium and 20.18x10⁻³ kg/mol for neon). Hence:
vHe = √3×8.314 kgm²/s²molK×T / √4x10⁻³kg/mol
vNe = √3×8.314 kgm²/s²molK×T / √20.18x10⁻³kg/mol
The ratio simplifies to:
vHe / vNe = √3×8.314 kgm²/s²molK×T / √4x10⁻³kg/mol / √3×8.314 kgm²/s²molK×T / √20.18x10⁻³kg/mol
vHe / vNe = √20.18x10⁻³kg/mol / √4x10⁻³kg/mol
vHe / vNe = 2.24
I hope it assists you!
1 pm equals 10^{-10} cm. Therefore, 230 pm can be converted to 2.3 × 10^{-8} cm. Atoms are spherical in shape, and the volume of a sphere can be calculated using the formula 4/3πr³. Consequently, the atom's volume is calculated as 4/3π(2.3 × 10^{-8})³. Evaluating this gives 4/3 × (3.142 × 12.167 × 10^{-24}), which simplifies to approximately 5.096 × 10^{-23} cm³. Since 1 m³ is equal to 1,000,000 cm³, we find that the volume of the atom is 5.096 × 10^{-29} m³.
Answer:
Is it true that you shouldn't wash your hair, drink cold water, eat ice cream, or exercise during your period? Please explain your answer.
No, this is not accurate; doing any of these activities is perfectly fine. None of them affects us because they are not connected to our bodily systems. Also, I apologize for any language errors as I utilized Google Translate.
I hope this is helpful :)
Answer:
The entropy change of the surroundings is -33.5 J/K
Explanation:
The heat gained by the ice is 10 kJ, equating to 10000 J
The heat released by the surroundings is the negative of the heat gained by the ice.
Thus,
The heat lost by the surroundings = -(10000 J)
Given the room temperature = 
= 273 + 25 = 298 K
Thus, the entropy change of the surroundings is -33.5 J/K
Response: The volume of the cube that is underwater is 29.8 mL
Clarification:
Initially, we need to find the mass of the ice.
Equation applied:
Provided information:
Ice density = 
Volume of ice = 45.0 mL
The cube displaces 40.5 g of liquid to float.
Next, we will ascertain how much of the cube is submerged in the liquid.
Therefore, the submerged portion of the cube is 29.8 mL
