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Dissolve In Water

Which of the following will not dissolve in water?

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The Molecular Formula

If an unknown compound is found to have an empirical formula of CH4, which of the following is the molecular formula if the molar mass was determined to be 128 g/mol?

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Final Oxidation Number

What is the final oxidation number of carbon in the following chemical reaction?

6CO2 + 6H2O -> C6H12O6 + 6O2

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Compound Boiling Point

Which of the following compounds would have the highest boiling point?

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Evaporative Cooling

Which of the following is an accurate explanation for evaporative cooling?

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Calcium Hydroxide

The solubility of calcium hydroxide (Ca(OH)2) is given as:

The solubility is a factor of total hydroxide ion in the solution and the solvent hydroxide concentration. The solvent is the liquid in which the calcium hydroxide is dissolved. Which of the following would increase the solubility of calcium hydroxide?

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Density of the Solid

If 7.000g of a solid displaced 21.0 mL of water when dropped into a graduated cylinder, what is the density of the solid?

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Ideal Gas Law

According to the ideal gas law at STP, which of the following is the value of the ratio between moles (assume 1 mole), the gas constant R, temperature and the pressure?

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Equation Balancing

Balance the following equation:

Butane + O2 -> H2O + CO2

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Aqueous Equation

Consider the following aqueous equation:

6 NaI + Ca3(PO4)2 -> 2 Na3PO4 + 3 CaI2

If 14 moles of NaI, 8 moles of Ca3(PO4)2, and 6 moles of Na3PO4 are present in a mixture, which one of the following compounds would determine the amount of CaI2 that was produced after 2 hours?

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