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Chemistry, 23.06.2019 00:00
What is the approximate mass of 25 cm3 of silver, if the density is 10.5 g/cm3? a. 0.42 g b. 2.4 g c. 42 g d. 260 g
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Chemistry, 23.06.2019 09:00
What sources of error may have contributed to the percent yield not being 100 percent? think about things that may have led to inaccurate measurements or where mass of the product could have been lost if this experiment was conducted in a physical laboratory.
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Chemistry, 23.06.2019 10:30
4al + 3o2 → 2al2o3 what does the "3" in front of o2 stand for? a) it indicates that there are 5 oxygen atoms after you add the coefficient and the subscript. b) it indicates that that there are are total of 6 oxygen atoms all bonded together as a single molecule. c) it indicates that there are 3 oxygen molecules chemically bonded to each other in the reaction. d) it indicates that there are 3 separate oxygen molecules in the reaction.
Answers: 2
Chemistry, 23.06.2019 20:00
Asample of water is taken and kept in a beaker in a freezer at a constant temperature of 0°c. if the system is at dynamic equilibrium, which of these statements is true? the rate of freezing is equal to the rate of melting. the rate of freezing is greater than the rate of melting. the amount of ice is greater than the amount of water. the amount of ice is equal to the amount of water.
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