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son4ous [18]
3 years ago
13

Can one of you guys help me get this?

Chemistry
1 answer:
Lostsunrise [7]3 years ago
5 0
Carbon, Nitrogen, and Oxygen all have the same number of energy levels because periods (rows) tell the amount of energy levels an element has.
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How to write generic word equation and a chemical equation for the reaction that occurs when an anhydrous salt is placed in wate
Oksana_A [137]
The generic solution of the reaction that occurs would be writen as water + anhydrous salt  = hydrated salt 
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3 years ago
A chemist needs 0.550 mol selenium for a reaction. What mass of selenium should a chemist use?
-BARSIC- [3]

Answer:

The chemist would require to use 43.43 grams.

Explanation:

In order to solve this problem we need to know<u> how much do 0.550 moles of selenium weigh</u>. To do that we use selenium's<em> molar mass </em>and multiply it by the given number of moles:

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The chemist would require to use 43.43 grams.

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3 years ago
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7 0
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6 0
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When two ionic compounds are dissolved in water, a double replacement reaction can... Group of answer choices occur if two of th
sergey [27]

Answer:

occur if two of the ions form an insoluble ionic compound, which precipitates out of solution

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