Small Quantities of Hydrogen Can Be Prepared by the Addition

question 50

Multiple Choice

Small quantities of hydrogen can be prepared by the addition of hydrochloric acid to zinc. A sample of 195 mL of hydrogen was collected over water at 25°C and 753 torr. What mass of hydrogen was collected? (P_water = 24 torr at 25°C)

• A)0.00765 g
• B)0.0154 g
• C)0.0159 g
• D)0.0164 g
• E)0.159 g

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Definitions:

Control Limits

These are the boundaries in a control chart, beyond which a process is considered to be out of control indicating an issue that needs investigation.

Average Range

The statistical measure representing the difference between the highest and lowest values in a set, divided by the number of observations.

Inspection Samples

Refers to a selection of items taken from a larger population and tested or inspected to determine the quality or performance of the whole.