Chemistry, 06.11.2019 03:31, Trinhphuongtran
How did uranium become present in earth's upper crust? choose one: a. it was delivered by comets that crashed into earth's surface. b. it developed naturally in the upper crust. c. it rose upward as it was carried within magma. d. it does not exist in the upper crust. uranium only exists in the mantle.
Answers: 2
Chemistry, 22.06.2019 02:30, milesjreece3939
Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.
Answers: 1
Chemistry, 22.06.2019 12:00, daytonalive83481
Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.
Answers: 1
Chemistry, 22.06.2019 14:30, villarrealc1987
In water, a strong acid will break down into its component parts. a. completely b. partly c. never in water, a weak base will break down into its component parts. a. completely b. partly c. never
Answers: 2
How did uranium become present in earth's upper crust? choose one: a. it was delivered by comets t...
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