Chapter 10: Problem 21
How does each of the following affect the rate of evaporation of a liquid in an open dish? a. intermolecular forces b. temperature c. surface area
Chapter 10: Problem 21
How does each of the following affect the rate of evaporation of a liquid in an open dish? a. intermolecular forces b. temperature c. surface area
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Get started for freeIdentify the most important types of interparticle forces present in the solids of each of the following substances. a. Ar e. \(\mathrm{CH}_{4}\) b. \(\mathrm{HCl}\) f. \(\mathrm{CO}\) c. HF g. \(\mathrm{NaNO}_{3}\) d. \(\mathrm{CaCl}_{2}\)
A \(0.250-\mathrm{g}\) chunk of sodium metal is cautiously dropped into a mixture of \(50.0 \mathrm{~g}\) water and \(50.0 \mathrm{~g}\) ice, both at \(0{ }^{\circ} \mathrm{C}\). The reaction is \(2 \mathrm{Na}(s)+2 \mathrm{H}_{2} \mathrm{O}(l) \longrightarrow 2 \mathrm{NaOH}(a q)+\mathrm{H}_{2}(g) \quad \Delta H=-368 \mathrm{~kJ}\) Will the ice melt? Assuming the final mixture has a specific heat capacity of \(4.18 \mathrm{~J} / \mathrm{g} \cdot{ }^{\circ} \mathrm{C}\), calculate the final temperature. The enthalpy of fusion for ice is \(6.02 \mathrm{~kJ} / \mathrm{mol}\).
The band gap in aluminum phosphide (AlP) is \(2.5\) electron-volts \(\left(1 \mathrm{eV}=1.6 \times 10^{-19} \mathrm{~J}\right)\). What wavelength of light is emitted by an AlP diode?
A common prank on college campuses is to switch the salt and sugar on dining hall tables, which is usually easy because the substances look so much alike. Yet, despite the similarity in their appearance, these two substances differ greatly in their properties, since one is a molecular solid and the other is an ionic solid. How do the properties differ and why?
What is an alloy? Explain the differences in structure between substitutional and interstitial alloys. Give an example of each type.
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