What is the mass of a 12.5% blood plasma sample that contains 10.0 g of dissolved solute? A) 1.25 g B) 1.43 g C) 70.0 g D) 80.0 g E) 125 g
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What is the solubility of LiCl at 55 °C? (Refer to text Figure 13.5.) A) 38 g/100 g water B) 46 g/100 g water C) 55 g/100 g water D) 101 g/100 g water E) 139 g/100 g water
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What is the volume occupied by 0.750 g of nitrogen gas, N2, at STP? A) 0.600 L B) 0.938 L C) 16.8 L D) 37.3 L E) 836 L
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The first inert gas compound to be synthesized was XePtF6 (440.37 g/mol). What is the percentage of platinum in the compound? A) 4.314% B) 25.89% C) 29.81% D) 44.30% E) 55.90%
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How many formula units of lithium iodide, LiI, have a mass equal to 4.24 g? A) 1.90 x 1025 formula units B) 1.91 x 1022 formula units C) 2.55 x 1024 formula units D) 5.24 x 1023 formula units E) 5.24 x 1026 formula units
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According to the metric system, 1 L = ________ mL. A) 1 x 101 B) 1 x 102 C) 1 x 103 D) 1 x 106 E) none of the above
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According to the metric system, 1 Tm = ________ m. A) 1 x 1012 B) 1 x 109 C) 1 x 106 D) 1 x 103 E) none of the above
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A sample of 10K gold contains the following: 10.0 g gold, 4.0 g silver, 5.0g copper, and 5.0 g nickel. What is the percent gold in the sample? A) 10% B) 14% C) 42% D) 58% E) 71%
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Add 5.0 x 104 to 2.0 x 103 and express the answer in scientific notation. A) 1.0 x 103 B) 2.5 x 103 C) 2.5 x 104 D) 5.2 x 103 E) 5.2 x 104
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A lithium atom has a radius of 0.000 000 015 2 cm. Express the atomic radius in scientific notation. A) 1.52 x 10-9 cm B) 1.52 x 10-8 cm C) 1.52 x 10-7 cm D) 1.52 x 107 cm E) 1.52 x 108 cm
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