Advanced

How is molar mass determined using the ideal gas law and experimental data?

Advanced

To find a gas's molar mass, use the ideal gas law PV=nRT. Measure pressure (P), volume (V), and temperature (T), then calculate moles (n) using the gas mass and molar mass. Rearrange to solve for molar mass.

Advanced

If the pressure is expressed in kPa and volume in dm^{3}, why can the same value of R (from the previous flash card) be used?

Advanced

Because the two conversion factors (10^{3} for kPa to Pa and 10^{–3} for dm^{3} to m^{3}) cancel each other out.

Intermediate

If all parameters are expressed in standard SI units (p in Pa, V in m^{3}, T in K and n in mol), what is the value of R?

Intermediate

R≈8.31JK^{–1}mol^{–1}.

Intermediate

What does the symbol 'R' represent in the ideal gas law equation?

Intermediate

R represents the universal gas constant in the ideal gas equation, used in calculations involving the properties of ideal gases.

Intermediate

What is the ideal gas equation?

Intermediate

pV=nRT

Easy

True or False: The constant value of the expression \(\frac{pV}{T}\) is proportional to the amount of gas, represented by 'n'.

Easy

True.

Easy

What is the expression that suggests the change in parameters p, V, or T affects the other two such that the expression remains constant?

Easy

\(\frac{pV}{T}\) remains constant.

Intermediate

Why is variable control important in a gas experiment setup?

Intermediate

Variable control is crucial to ensure that changes in the experiment are due to the tested independent variable, not outside influences.

Easy

In a science experiment, what variable do you, the experimenter, change or manipulate?

Easy

The independent variable.

Advanced

In an experimental set-up, what initial observations should you make?

Advanced

Identify the experiment's goal, the independent variable, which variables need control, and the function of each equipment piece.

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