Nickel Has a Lower Atomic Mass Than Cobalt, Even Though

question 13

Multiple Choice

Nickel has a lower atomic mass than cobalt, even though it has a higher atomic number. One possible explanation is that one of the average atomic masses was miscalculated. In the case of cobalt, there is only one isotope: 100% ⁵⁹Co at a mass of 58.9332 amu. For nickel, however, there are five isotopes as given in the table. $\begin{array}{|l|l|l|}\hline \text { Isotope } & \text { mass }(\mathrm{amu}) & \text { abundance } \\\hline{ }^{58} \mathrm{Ni} & 57.9354 & 67.76 \% \\\hline{ }^{60} \mathrm{Ni} & 59.9308 & 26.16 \% \\\hline{ }^{61} \mathrm{Ni} & 60.9311 & 1.25 \% \\\hline{ }^{62} \mathrm{Ni} & 61.9283 & 3.66 \% \\\hline{ }^{64} \mathrm{Ni} & 63.9280 & 1.16 \% \\\hline\end{array}$ Using the data in the table, what is the average atomic mass for nickel

• A) 60.45 amu
• B) 58.70 amu
• C) 59.75 amu
• D) 58.10 amu
• E) 59.25 amu

Recognize different parenting styles and their effects on child development.

Identify the biological and environmental factors influencing gender development and roles.

Describe the process and significance of gender typing in childhood.

Recognize the factors and risks associated with child maltreatment.

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Definitions:

Demand for Labor

The total amount of workers that employers want to hire at a given wage rate and time.

Productivity of Labor

The output per labor hour or worker, indicating how efficiently labor is used in the production of goods and services.

Labor Resource Market

The market in which individuals offer their labor to employers in exchange for wages.

Substitute Input

An alternative resource or material used in the production process that can replace another in response to changes in market conditions or prices.