Chemistry, 27.09.2019 21:30 olivialaine31
The element boron, a trace element in earth's crust, is found in foods produced from plants. boron has only two naturally occurring stable isotopes, boron-10 and boron-11. one sample of a green vegetable contains 0.0035 gram of boron. determine the total number of moles of boron in this sample.
Answers: 1
Chemistry, 21.06.2019 16:00
Based on the law of conservation of energy, which statement is false? answer- energy is lost when machines dont work right
Answers: 1
Chemistry, 22.06.2019 02:30
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 18:00
Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?
Answers: 2
The element boron, a trace element in earth's crust, is found in foods produced from plants. boron h...
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