Mrs. Lewis gives you a piece of iron and asks you to determine the physical and chemical properties of the metal. She wants you
to classify the properties as either physical or chemical:
A. Identify the properties as physical or chemical properties.
B. Explain why you categorized each property as either a physical or chemical property.
A. Identify the properties as physical or chemical properties.
B. Explain why you categorized each property as either a physical or chemical property.
1 answer:
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Explanation:
Molar mass of HBr = 81 g/mol
Molar mass of nitrogen dioxide gas = 46 g/mol
Molar mass of ethane = 30 g/mol
Graham's Law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:
So, the gas with least molar mass will effuse out fastest from the container and that is ethane gas.
The formula for average kinetic energy is:
where,
k = Boltzmann’s constant =
T = temperature = 273.15 K ( at STP)
As we can see from the formula that kinetic energy depends upon only temperature of the gas molecule.
So, from this we can say that all the gas molecules have the same average kinetic energy at this temperature.