Classify the following elements as metals, nonmetals, or semimetals:

(a) Ti

(b) Te

(c) Se

(d) Sc

(e) Si

Classify the following elements as metals, non- metals, or semimetals: germanium, phosphorus, oxygen, beryllium.

Classify the following elements as metals, metalloids, or nonmetals.

(a) SI

(b) Zn

(c) B

(d) N

(e) K

(f) S

Administration of digitalis, a drug used to control atrial fibrillation in heart patients, must be carefully controlled because even a modest overdose can be fatal. To take differences between patients into account, drug dosages are prescribed in terms of mg/kg body weight. Thus, a child and an adult differ greatly in weight, but both receive the same dosage per kilogram of body weight. At a dosage of 20 mg/kg body weight, how many milligrams of digitalis should a 160 lb patient receive?

A Big Mac hamburger from McDonald’s contains 540 Calories.

(a) How many kilojoules does a Big Mac contain?

(b) For how many hours could the amount of energy in a Big Mac light a 100 watt lightbulb? (1 watt = 1 J/s)

How large, in cubic centimeters, is the volume of a red blood cell (in cm $^{3}$)if the cell has a cylindrical shape with a diameter of 6 X 10 $^{-6}$ m and a height of 2 X 10$^{-6}$ m? What is the volume in pL?

Carry out the following conversions: 0.105 in. to mm

A pure diamond has a density of 3.52 g/cm $^{3}$.Set up a dimensional-analysis equation to find the volume (cm $^{3}$) of the Hope Diamond.

Gemstones are weighed in carats, with 1 carat = 200 mg (exactly). What is the mass in grams of the Hope Diamond, the world’s largest blue diamond at 44.4 carats? What is this mass in ounces?

Gemstones are weighed in carats, where 1 carat =200 mg exactly. What is the mass in grams of the Hope diamond, the world's largest blue diamond, at 44.4 carats?

Administration of digitalis, a drug used to control atrial fibrillation in heart patients, must be carefully controlled because even a modest over dosage can be fatal. To take differences between patients into account, drug dosages are prescribed in terms of $\mathrm{mg} / \mathrm{kg}$ body weight. Thus, a child and an adult differ greatly in weight, but both receive the same dosage per kilogram of body weight. At a dosage of $20 \mu \mathrm{g} / \mathrm{kg}$ body weight, how many milligrams of digitalis should a $160 \mathrm{lb}$ patient receive?

Carry out the following conversions: (a) How many grams of meat are in a quarter-pound hamburger $(0.25 \mathrm{lb})$ ? (b) How tall in meters is the Willis Tower (formerly called the Sears Tower) in Chicago $(1454 \mathrm{ft})$ ? (c) How large in square meters is the land area of Australia $\left(2,941,526 \mathrm{mi}^{-2}\right)$ ?

Solve.

In England, mass is measured in units called stones. One pound equals $\frac{1}{14}$ of a stone. A cat weighs $\frac{3}{4}$ stone. How many pounds does the cat weigh?

Weights in England are commonly measured in stones, where 1 stone $=14 \mathrm{lb}$. What is the weight in pounds of a person who weighs $8.65$ stones?