Chemistry, 24.01.2022 14:00 clairee002
Iodine-131 has a half-life of 8.0 minutes. How many half-lives will pass in 120 minutes?
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Chemistry, 22.06.2019 08:00
An observation that requires measurement is called quantitative observable or qualitative
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Chemistry, 22.06.2019 11:00
Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.
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Chemistry, 22.06.2019 18:50
Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g. what is the percent by mass of water in the hydrate? %
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Chemistry, 22.06.2019 22:00
4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.
Answers: 2
Iodine-131 has a half-life of 8.0 minutes. How many half-lives will pass in 120 minutes?...
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