Exam 1: Chemistry:methods and Measurement

A patient weighs 146 pounds and is to receive a drug at a dosage of 45.0 mg per kg of body weight.What mass of the drug should the patient receive? [1 pound = 454 g]

How many pounds are represented by 764.6 mg? [1 pound = 454 g]

Which statement concerning the scientific method is FALSE?

The number 0.0680 has 3 significant figures.

The concentration of a patient's blood sugar was determined to be 4850 micrograms per milliliter.Which correctly represents this measurement?

Which state of matter has neither a definite shape nor a definite volume?

How many cm are in 3.5 × 10^-2 km?

What Kelvin temperature corresponds to 98.6°F?

What is the number 0.0062985632 written in scientific notation to three significant figures?

If one atom of carbon-14 weighs 14.0 atomic mass units and one atomic mass unit is equal to 1.66 × 10^-24 grams, what is the mass of 25 atoms of carbon-14 in grams?

What term is used to describe the summary of a large quantity of information?

The presence of some error is a natural consequence of any measurement.

A chemical reaction releases 44.3 kJ of heat.What is the equivalent amount of heat expressed in calories? [1 cal = 4.18 J]

What does the prefix "centi-" mean?

Which statement concerning energy is FALSE?

Which of the following terms is defined as anything that has mass and occupies space?

The speed of light is 186,000 miles per second.What is its speed in centimeters per second? [5280 feet = 1 mile; 12 inches = 1 foot; 2.54 cm = 1 inch]

A patient needs 0.300 g of a solid drug preparation per day.How many 10.0 mg tablets must be given to the patient per day?

In which state does matter have an indefinite shape and definite volume?

Which of the following numbers has only one significant figure?