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The equation 2NO2 « N2O4 shows a system A. in chemical equilibrium. B. in physical equilibrium. C. that does not reach equilibrium. D. that does not change.
Weegy: a. in chemical equilibrium. User: Which of the following takes place during a redox reaction? A. Electrons are gained only. B. Electrons are lost only. C. Electrons are both gained and lost. D. Electrons are neither gained nor lost. Weegy: electrons are both gained and lost simultaneously. (More)
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Expert Answered
Asked 9/24/2012 9:04:57 PM
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On the periodic table, there are two numbers in the block for the element potassium, K: 19 and 39.098. What are these two numbers, and what do they represent?
Weegy: 19 represents the proton, electron and atomic number 39.098 represents the atomic mass number compared to C-12 (More)
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Expert Answered
Asked 9/24/2012 9:54:53 PM
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Which of the following is an advantage of using nuclear power plants to produce electricity? A. Nuclear power plants do not pollute the air. B. Nuclear power plants produce wastes that are easy to dispose of. C. Nuclear power plants produce more stable wastes compared to fossil fuel combustion. D. all of the above
Weegy: C. Nuclear power plants produce more stable wastes compared to fossil fuel combustion User: Question 14 of 20 5.0 Points Which of the following is NOT an advantage of using a fusion reaction instead of a fission reaction to produce energy? A. Workers are not in as much danger from radiation. B. Hydrogen is used, and hydrogen is easily obtained from water. C. No harmful waste products are produced. D. Fusion reactors require less energy than fission reactors do. Weegy: D. Fusion reactors require less energy than fission reactors do. (More)
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Updated 9/25/2012 8:53:42 PM
1 Answer/Comment
Which of the following is an advantage of using nuclear power plants to produce electricity? A. Nuclear power plants do not pollute the air. - - -
Added 9/25/2012 8:53:46 PM
From left to right across a period in the periodic table, elements become less and more in their properties.
Weegy: From left to right across a period in the periodic table, elements become less solid and more liquid or gasesous state. User: You are given the melting points of three unknown substances and are asked to predict which one is an ionic compound. You would select the compound with the melting point. Weegy: methods of identifying unknowns: Density: Density is equal to mass divided by volume. [ If you're trying to choose between two chemicals, you might want to take the density of the unknown by weighing it on a balance and taking the volume in a gradated cylinder. The chemical with the matching density is your unknown. Color: It's strange to think of something like color being an indicator of what an unknown is, but this is sometimes used by people who are very familliar with the unknown. However, as you might imagine, many chemicals look the same color, so this is only handy in some very limited situations. Smell: Smell can be a handy way of identifying a chemical if you've got a good nose. However, since many chemicals are extremely toxic, this is probably not a test you should use. Melting and boiling points: Most chemicals have melting and boiling points that are very different from others. If you can accurately find the melting and/or boiling temperature of your unknown chemical, you can probably match that value to a table of melting and boiling points to identify your unknown. The big problem with this method: If your chemical is contaminated, this will affect the melting and boiling point. You might also find that it's hard to get really good data in a laboratory setting. ] (More)
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Asked 9/24/2012 10:30:59 PM
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