Chemistry, 12.03.2020 20:16 jaylinthornton6
The contents of a rock have a 206Pb to 238U mass ratio of 0.155:1.00. Assuming that the rock did not contain any 206Pb at the time of its formation, determine the age of the rock. Uranium-238 decays to lead-206 with a half-life of 4.5 billion years.
Answers: 2
Chemistry, 23.06.2019 14:00, 1940swannabe
Which word refers to the smallest functional unit of living thing
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Chemistry, 24.06.2019 00:30, liyahsmith9305
An electric kettle uses electrical energy to boil water. energy from the electricity is transferred to the water, heating it up. an electric ice maker also uses electrical energy, but it freezes water to form ice. since energy can’t be created or destroyed, and water loses potential energy when it freezes to form ice, what happens to the energy put into the ice maker and the energy released by the water?
Answers: 2
Chemistry, 24.06.2019 00:40, sugar1014
The complete combustion of octane, a component of gasoline, is represented by the equation: 2 c8h18(l) + 25 o2(g) →16 co2(g) + 18 h2o(l) how many liters of co2(g), measured at 63.1°c and 688 mmhg, are produced for every gallon of octane burned? (1 gal = 3.785 l; density of c8h18(l) = 0.703 g/ml)
Answers: 1
The contents of a rock have a 206Pb to 238U mass ratio of 0.155:1.00. Assuming that the rock did not...
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