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Chapter 1: Q87E (page 9)

Question: Calculate the density of aluminum if 27.6 cm3 has a mass of 74.6 g.

Short Answer

Expert verified

The density of aluminum is 2.70 g/cm3

Step by step solution

01

Step 1: To determine the definition of density

Density is a physical parameter which provides information about the mass of a sample divided by its volume. The ratio between the mass and volume is known as density.

02

Calculate the density of Al

It is given that

Mass of aluminum = 74.6 g

Volume = 27.6cm3

Now,

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Most popular questions from this chapter

Question: Make the conversion indicated in each of the following:

(a) the men’s world record long jump, 29 ft 4¼ in., to meters

(b) the greatest depth of the ocean, about 6.5 mi, to kilometers

(c) the area of the state of Oregon, 96,981 mi2, to square kilometers

(d) the volume of 1 gill (exactly 4 oz) to milliliters

(e) the estimated volume of the oceans, 330,000,000 mi3, to cubic kilometers.

(f) the mass of a 3525-lb car to kilograms

(g) the mass of a 2.3-oz egg to grams

Question: A chemist’s 50-Trillion Angstrom Run (see Exercise 1.78) would be an archeologist’s 10,900 cubit run. Howlong is one cubit in meters and in feet? (1 Å = 1 × 10-8 cm)

The following quantities were reported on the labels of commercial products. Determine the number of significant figures in each.

(a) 0.0055 g active ingredients

(b) 12 tablets

(c) 3% hydrogen peroxide

(d) 5.5 ounces

(e) 473 mL

(f) 1.75% bismuth

(g) 0.001% phosphoric acid

(h) 99.80% inert ingredients

Identify each of the following statements as being most similar to a hypothesis, a law, or a theory. Explain your reasoning.

(a) Falling barometric pressure precedes the onset of bad weather.

(b) All life on earth has evolved from a common, primitive organism through the process of natural selection.

(c) My truck’s gas mileage has dropped significantly, probably because it’s due for a tune-up

Indicate the SI base units or derived units that are appropriate for the following measurements:

  1. The mass of the moon
  2. The distance from Dallas to Oklahoma City
  3. The speed of sound
  4. The density of air
  5. The temperature at which alcohol boils
  6. The area of the state of Delaware
  7. The volume of a flu shot or a measles vaccination
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