Lithium and Nitrogen React to Produce Lithium Nitride: 6Li (S)

question 102

Multiple Choice

Lithium and nitrogen react to produce lithium nitride: 6Li (s) + N₂ (g) → 2Li₃N (s)
How many moles of N₂ are needed to react with 0.710 mol of lithium?

• A)4.26
• B)0.710
• C)0.237
• D)2.13
• E)0.118

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Definitions:

Population standard deviation

A measure of the dispersion or variability within a total population.

Sample median

The midpoint value of a sample data set, where half the numbers are above the median and half are below.

Confidence interval

An extent of values, obtained via sample statistical analysis, seen as likely embracing the unknown value of a population attribute.

Random sample

A subset of individuals chosen from a larger set where each member has an equal chance of being selected.