Questions from General Chemistry


Q: A gas cylinder having a volume of 10.5 L contains

A gas cylinder having a volume of 10.5 L contains 36.8 g of gas. What is the density of the gas?

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Q: Using Table 2.8, calculate the volume of 25.

Using Table 2.8, calculate the volume of 25.0 g of each of the following: a. hydrogen gas (at 1 atmosphere pressure) b. mercury c. lead d. water

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Q: Ethanol and benzene dissolve in each other. When 100. mL

Ethanol and benzene dissolve in each other. When 100. mL of ethanol is dissolved in 1.00 L of benzene, what is the mass of the mixture? (See Table 2.8.)

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Q: When 2891 is written in scientific notation, the exponent indicating the

When 2891 is written in scientific notation, the exponent indicating the power of 10 is .

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Q: For each of the following numbers, if the number is rewritten

For each of the following numbers, if the number is rewritten in scientific notation, will the exponent of the power of 10 be positive, negative, or zero? a. 1/103 b. 0.00045 c. 52,550 d. 7.21 e....

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Q: For each of the following numbers, if the number is rewritten

For each of the following numbers, if the number is rewritten in scientific notation, will the exponent of the power of 10 be positive, negative, or zero? a. 4,915,442 b. 1/1000 c. 0.001 d. 3.75

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Q: For each of the following numbers, by how many places does

For each of the following numbers, by how many places does the decimal point have to be moved to express the number in standard scientific notation? In each case, is the exponent positive or negative?...

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Q: For each of the following numbers, by how many places must

For each of the following numbers, by how many places must the decimal point be moved to express the number in standard scientific notation? In each case, will the exponent be positive, negative, or z...

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Q: For each of the following numbers, by how many places must

For each of the following numbers, by how many places must the decimal point be moved to express the number in standard scientific notation? In each case, will the exponent be positive, negative, or z...

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Q: can be broken down into the component elements by chemical changes

can be broken down into the component elements by chemical changes.

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