Questions from General Chemistry

Q: Given that 1 in. = 2.54 cm exactly,

Given that 1 in. = 2.54 cm exactly, indicate what conversion factor is appropriate to convert 3.25 in. to centimeters and to convert 46.12 cm to inches.

Q: For Exercises 57 and 58, apples cost $1.75

For Exercises 57 and 58, apples cost $1.75 per pound. What conversion factor is appropriate to express the cost of 5.3 lb of apples?

Q: For Exercises 57 and 58, apples cost $1.75

For Exercises 57 and 58, apples cost $1.75 per pound. What conversion factor could be used to determine how many pounds of apples could be bought for $25.00?

Q: Sketch the apparatus commonly used for simple distillation in the laboratory,

Sketch the apparatus commonly used for simple distillation in the laboratory, identifying each component.

Q: Will the power of 10 have a positive, negative, or

Will the power of 10 have a positive, negative, or zero exponent when each of the following numbers is rewritten in standard scientific notation? a. 0.08331 b. 2.8 c. 0.0491 d. 70,892,000

Q: The properties of a compound are often very different from the properties

The properties of a compound are often very different from the properties of the elements making up the compound. Water is an excellent example of this idea. Discuss.

Q: Which of the following best describes the substance XeF4? a

Which of the following best describes the substance XeF4? a. element b. compound c. heterogeneous mixture d. homogeneous mixture

Q: Which of the following statements is(are) true?

Which of the following statements is(are) true? a. A spoonful of sugar is a mixture. b. Only elements are pure substances. c. Air is a mixture of gases. d. Gasoline is a pure substance. e. Compou...

Q: 12.01 g of carbon contains 6.02 * 1023

12.01 g of carbon contains 6.02 * 1023 carbon atoms. What is the mass in grams of 1.89 * 1025 carbon atoms?

Q: Los Angeles and Honolulu are 2558 mi apart. What is this

Los Angeles and Honolulu are 2558 mi apart. What is this distance in kilometers?