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Author Archives: Anonymous

Lead-214 () can result from Radon-222 ()  undergoing:

Lead-214 () can result from Radon-222 ()  undergoing:

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Using the following table of average bond enthalpies, calcul…

Using the following table of average bond enthalpies, calculate the value of △H{“version”:”1.1″,”math”:”△H”} for the chemical reaction shown here: 2NH3 → N2 + 3H2 Note: the bonding for N2 is a triple N≡N bond; all other bonds are single covalent bonds

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You add 0.04 moles of the weak acid formic acid (pKA = 3.75)…

You add 0.04 moles of the weak acid formic acid (pKA = 3.75) to 1L of H2O, at equilibrium the pH would be:

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For the following chemical reaction: 3 CO2(g) + 10 H2(g)  à …

For the following chemical reaction: 3 CO2(g) + 10 H2(g)  à  C3H8(g) + 6 H2O(l)   utilize the provided table of thermodynamic data to calculate the standard state reaction enthalpy . 

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The half-life for the transmutation of Radon-222 () to Lead-…

The half-life for the transmutation of Radon-222 () to Lead-214 ()  is 3.8 days.  If there is an initial mass of 100.0 g of Radon-222, how much Radon-222 would remain after 7.6 days?

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Select all of the molecules listed below that could form hyd…

Select all of the molecules listed below that could form hydrogen bonds with molecules of ethanol (CH3OH)

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Order the following objects from lowest (1) to highest(3) ki…

Order the following objects from lowest (1) to highest(3) kinetic energy.

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For each of the 3 systems illustrated below – AT CONSTANT PR…

For each of the 3 systems illustrated below – AT CONSTANT PRESSURE, identify whether the process corresponds to a positive ( ΔH > 0), negative (ΔH < 0), or no ( ΔH = 0)  change in the enthalpy of the system

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When would we use hydralazine? What are the medications cont…

When would we use hydralazine? What are the medications contraindications?

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Your patient needs to receive 8 mg of a medication. You have…

Your patient needs to receive 8 mg of a medication. You have 20 mg in 2 mL. How much should you administer?

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