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Author Archives: Anonymous

How many moles of water, H2O, are present in 1.25 x 1024 mol…

How many moles of water, H2O, are present in 1.25 x 1024 molecules of water?        1 mole = 6.022 x 1023 particles

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Which balanced equation best describes this reaction? 

Which balanced equation best describes this reaction? 

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Calculate the pH of a baking soda solution whose [H+] = 7.79…

Calculate the pH of a baking soda solution whose [H+] = 7.79 x 10-11 M          pH = -log[H+]

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What amount of Table Salt (NaCl) is expected when 16.0 g of…

What amount of Table Salt (NaCl) is expected when 16.0 g of Na is reacted with an excess of Cl2 according to the following reaction? 2Na(s) + Cl2(g) à 2NaCl(s)

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What is the relationship between these two structures? 

What is the relationship between these two structures? 

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When two nonmetals combine, they “share” the electrons betwe…

When two nonmetals combine, they “share” the electrons between them.  This type of bond is a(n):

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Which of the following is unsaturated?

Which of the following is unsaturated?

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An ammonia cleaning solution contains 2.00% (v/v) of ammonia…

An ammonia cleaning solution contains 2.00% (v/v) of ammonia in water. What volume of solution will be prepared with 150 mL of ammonia? 

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A good definition of chemistry is the science that seeks to…

A good definition of chemistry is the science that seeks to understand:

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Which of the following best describes the polarity of a P –…

Which of the following best describes the polarity of a P – N bond? (EN: P=2.1; N=3.0)

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