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Author Archives: Anonymous

The following reaction releases 2800 kJ of heat for each mol…

The following reaction releases 2800 kJ of heat for each mole of C6H12O6 that reacts. C6H12O6(s) + 6O2(g) → 6CO2(g) + 6H2O(l). This reaction is

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The correct symbol for the ion formed by potassium is:

The correct symbol for the ion formed by potassium is:

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A sample of N2 is collected over water at 24°C. If the total…

A sample of N2 is collected over water at 24°C. If the total pressure of the sample is 694 torr, what is the partial pressure of the N2? The vapor pressure of water at 24°C is 22.4 torr.

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The element neon, Ne, has three common isotopes: 20Ne, 21Ne,…

The element neon, Ne, has three common isotopes: 20Ne, 21Ne, and 22Ne. The difference between these three isotopes is

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Which of the following is a balanced equation for the combin…

Which of the following is a balanced equation for the combination reaction that occurs when solid potassium metal reacts with chlorine gas?

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How many electrons does an Al3+ ion have?

How many electrons does an Al3+ ion have?

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Consider the following reaction: 2AgNO3(aq) + MgCl2(aq) → 2A…

Consider the following reaction: 2AgNO3(aq) + MgCl2(aq) → 2AgCl(s) + Mg(NO3)2(aq)Which of the following is a balanced net ionic equation for this reaction?

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The number 54,900 correctly expressed in scientific notation…

The number 54,900 correctly expressed in scientific notation is:

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When 2.0 mol Ca(NO3)2 dissolves in water, how many moles of…

When 2.0 mol Ca(NO3)2 dissolves in water, how many moles of ions are in solution?

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Which of the following would you expect to be nonelectrolyte…

Which of the following would you expect to be nonelectrolytes when dissolved in water?MgCl2, CH3OH, N2

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