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Questions in chemistry

[Answered] 244 Laboratory Manual for General, Organic, and Biological Chemistry 6. Classify each of the following compounds according to its functional group. a. [tex]$CH _3- CH _2- CH = CH - CH _3$[/tex] b. [tex]$CH _3- CH _2- CH _2- OH$[/tex] c. [tex]$CH _3- CH _2- CH _2- O - CH _2- CH _3$[/tex] d. e.

[Answered] The table lists the lattice energies of some compounds. | Compound | Lattice Energy (kJ/mol) | | :------- | :---------------------- | | LiF | -1,036 | | LiCl | -853 | | NaF | -923 | | KF | -821 | | NaCl | -786 | Which statement about crystal lattice energy is best supported by the information in the table? A. The lattice energy increases as cations get smaller, as shown by LiF and KF. B. The lattice energy increases as the cations get larger, as shown by LiF and LiCl. C. The lattice energy decreases as cations get smaller, as shown by NaCl and NaF. D. The lattice energy decreases as the cations get smaller, as shown by NaF and KF.

[Answered] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Answered] Use the periodic table to complete each nuclear fusion equation. ${ }_1^2 H +{ }_1^3 H \rightarrow{ }_2^4 He + {?}^{?} E$ ${ }_7^{14} N+{ }_1^1 H \rightarrow{ }_{?}^{?} E$

[Answered] Which of the following gases is expected to have a higher solubility in water than what is predicted using Henry's law? A. [tex]$CH _4$[/tex] B. [tex]$H _2$[/tex] C. [tex]$NH _3$[/tex] D. Ar E. [tex]$N _2$[/tex]

[Answered] Consider the chemical reaction in equilibrium: [tex]$H_2+I_2+\text { heat } \Leftrightarrow 2 HI$[/tex] What will happen to the chemical equilibrium if the temperature of the system is increased? A. The direction of the chemical equilibrium will shift to the right, favoring the forward reaction. B. The chemical equilibrium will not be affected by an increase in temperature. C. The direction of the chemical equilibrium will shift to the left, favoring the reverse reaction. D. The chemical equilibrium will be lost permanently with a change of temperature.

[Answered] What quantity can tell you whether a solution is acidic or basic? A. temperature B. volume C. HI D. pH E. mass

[Answered] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Answered] What is the molar mass of aspirin, [tex]$C _9 H _8 O _4$[/tex]?

[Answered] Which equation shows how to calculate how many grams $(g)$ of KCl would be produced from 4 mol KOH? The balanced reaction is: $MgCl_2+2 KOH \rightarrow Mg(OH)_2+2 KCl$ A. $\frac{4 mol KOH }{1} \times \frac{1 mol KCl }{2 mol KOH } \times \frac{74.55 g KCl }{1 mol KCl }$ B. $\frac{4 mol KOH }{1} \times \frac{2 mol KCl }{1 mol KOH } \times \frac{74.55 g KCl }{1 mol KCl }$ C. $\frac{4 mol KOH }{1} \times \frac{2 mol KCl }{2 mol KOH } \times \frac{74.55 g KCl }{1 mol KCl }$ D. $\frac{4 mol KOH }{1} \times \frac{1 mol KOH }{1 mol KCl } \times \frac{74.55 g KCl }{1 mol KCl }$