Calculate the Speed of Sound in Hydrogen Gas (H₂)at 20 ^$\circ$

question 4

Multiple Choice

Calculate the speed of sound in hydrogen gas (H₂) at 20 ^$\circ$ C given the ratio of C_p to C_v is 1.41.(Molar mass of H₂ = 2 g/mol.)

• A)1850 m/s
• B)1150 m/s
• C)342 m/s
• D)1310 m/s
• E)41 m/s

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Definitions:

Variance

A measure of the dispersion or spread of a set of data points around their mean value.

Direct Materials Quantity Variance

The difference between the actual quantity of direct materials used in production and the standard quantity expected to be used.

Standard Labor Hours

The predetermined amount of time expected to be required to complete a task or produce a unit of goods under normal conditions.

Direct Materials Price Variance

The difference between the actual cost of materials used in production and the expected (standard) cost, indicating how effectively a company controls its raw material expenses.