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Category: Chemistry
When a large or small number is written in standard scientific notation, the number is expressed as the product of a number between 1 and 10, multiplied by the appropriate power of 10. For each of the following numbers, indicate what number between 1 and 10 would be appropriate when expressing the numbers in standard scientific notation. a. 9651 Qu...
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Category: Chemistry
A ________ represents a quantitative observation.
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Category: Chemistry
For each of the following numbers, indicate which zeros are significant and explain. Do not merely cite the rule that applies, but explain the rule. a. 10.020 For each of the following numbers, indicate which zeros are significant and explain. Do not merely cite the rule that applies, but explain the rule. b. 0.002050 For each of the following numb...
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Category: Chemistry
When a marble is dropped into a beaker of water, it sinks to the bottom. Which of the following is the best explanation? a. The surface area of the marble is not large enough for the marble to be held up by the surface tension of the water. b. The mass of the marble is greater than that of the water. c. The marble weighs more than an equivalent vol...
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Category: Chemistry
You go to a convenience store to buy candy and find the owner to be rather odd. He allows you to buy pieces only in multiples of four, and to buy four, you need $0.23. He allows you only to use 3 pennies and 2 dimes. You have a bunch of pennies and dimes, and instead of counting them, you decide to weigh them. You have 636.3 g of pennies, and each ...