Chemistry, 16.07.2020 05:01, luceridiaaz
Silicon is a semiconductor, making it valuable for electronics. Fortunately, silicon can be obtained from a very inexpensive and readily available source: sand (primarily silicon dioxide). To isolate the silicon, one of the initial steps is to form the gas silicon tetrachloride. Calculate the enthalpy change (in kJ) using Hess's Law in the conversion of 1.00mol of pure sand into pure silicon.
Answers: 3
Chemistry, 22.06.2019 02:00, rosie20052019
Which of the following happens during cell division? (a) energy is created (b) waste is eliminated (c) carbon dioxide is released (d) damaged cells are replaced
Answers: 1
Chemistry, 22.06.2019 17:30, latezwardjr15
In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j
Answers: 2
Chemistry, 23.06.2019 01:30, jonmorton159
At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.
Answers: 1
Silicon is a semiconductor, making it valuable for electronics. Fortunately, silicon can be obtained...
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