Chemistry 4th. Edition by John McMurry, Robert C. Fay | 9780131402089 | 0131402080

Chemistry

4 SOLVED PROBLEMS

262 SOLVED PROBLEMS

Question: 11.12

CALCULATING THE OSMOTIC PRESSURE OF A SOLUTION The total concentration of dissolved particles inside red blood cells and in the surrounding plasma is approximately 0.30 M, and the membrane surrounding the cells is semipermeable. What would the maximum osmotic pressure in atmospheres inside the ...

Verified Answer:

\Pi

\left(0.30 \frac{mol}...

Question: 10.7

CALCULATING THE NUMBER OF ATOMS IN A UNIT CELL How many atoms are in one primitive-cubic unit cell of a metal? ...

Verified Answer:

As shown in Figure 10.22a, a primitive-cubic unit ...

Question: 8.5

CALCULATING ΔH IN A CALORIMETRY EXPERIMENT Aqueous silver ion reacts with aqueous chloride ion to yield a white precipitate of solid silver chloride: Ag^+(aq) + Cl^-(aq) → AgCl(s) When 10.0 mL of 1.00 M AgNO3 solution is added to 10.0 mL of 1.00 M NaCl solution at 25.0 °C in a calorimeter, a white ...

Verified Answer:

Specific heat = 4.18 J/(g · °C) Mass = (20.0 mL)[l...

Question: 4.4

calculating the concentration of Ions in a Solution What is the total molar concentration of ions in a 0.350 M solution of the strong electrolyte Na2SO4, assuming complete dissociation? ...

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Assuming complete dissociation, the total molar co...

Question: 23.8

Write the products of the following reactions: ...

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The reaction of a carboxylic acid with an alcohol ...

Question: 21.WKC.2

The following pictures represent the electron population of the composite s–d band for three metals—Ag, Mo, and Y: (a) Which picture corresponds to which metal? Explain. (b) Which metal has the highest melting point, and which has the lowest? Explain. (c) Molybdenum is very hard, whereas silver is ...

Verified Answer:

(a) Ag in group 1B has 11 valence electrons. Thus,...

Question: 7.12

Describe the hybridization of the carbon atoms in allene, H2=C=C=CH2 ,and make a rough sketch of the molecule showing its hybrid orbitals. ...

Verified Answer:

Because the central carbon atom in allene has two ...

Question: 12.7

(a) Estimate the half-life for the decomposition of gaseous N2O5 at 55°C from the concentration-versus-time plot in Figure 12.1. (b) Calculate the half-life from the rate constant (1.7 × 10^-3 s^-1) (c) If the initial concentration of N2O5 is 0.020 M, what is the concentration of N2O5 after five ...

Verified Answer:

(a) Figure 12.1 shows that the concentration of [...

Question: 12.8

At elevated temperatures, nitrogen dioxide decomposes to nitric oxide and molecular oxygen: 2 NO2 (g) → 2 NO (g) + O2 (g) Concentration–time data for consumption of at 300°C are as follows: (a) Is the reaction first order or second order? (b) What is the value of the rate constant? (c) What is the ...

Verified Answer:

(a) The plot of

\ln  [NO_{2}]

ver...

Question: 12.6

Experimental concentration-versus-time data for the decomposition of gaseous N2O5 at 55°C are listed in Table 12.1 and are plotted in Figure 12.1. Use those data to confirm that the decomposition of is N2O5 a first-order reaction. What is the value of the rate constant for consumption of N2O5 ? ...

Verified Answer:

Values of

\ln  [N_{2}O_{5}]

are l...

Question: 2.WKC.3

Which of the following drawings represents a mixture, which a pure compound, and which an element? ...

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Drawing (a) represents a mixture of two diatomic e...

Question: 20.WKC.8

Consider the following isomers of the [Co(NH3)4(H2O)Cl]^2+ ions : (a) Label the isomers as cis or trans. (b) Which isomers are identical, and which are different? ...

Verified Answer:

(a) Isomers (1) and (4) have

H_{2}O \text...

Question: 23.WKC.1

Give the formula of the following compound, and convert the model into a con-densed structure: ...

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The compound has 7 carbons and 16 hydrogens: [lat...

Question: 24.WKC.1

Identify the following amino acid, and tell from the electrostatic potential map whether its side chain is acidic, basic, neutral nonpolar, or neutral polar. ...

Verified Answer:

The amino acid is leucine. It is nonpolar because ...