An ice cube tray contains enough water at 22.0oC to make 18 ice cubes, each of which has a mass of 30.0 g. The tray is placed in a freezer that uses CF2Cl2 as a refrigerant. The heat of vaporization...

Use the accompanying phase diagram for sulfur to answer the following questions. (The phase diagram is not to scale.) a. How many triple points are in the phase diagram? b. What phases are in...

At 207oC, Kp = 0.267 for the reaction PCl5(g) PCl3(g) + Cl2(g) a. If 0.100 mole of PCl5(g) is placed in an otherwise empty 12.0-L vessel at 207oC, calculate the partial pressures of PCl5(g),...

A sample of nickel is heated to 99.8oC and placed in a coffee cup calorimeter containing 150.0 g water at 23.5oC. After the metal cools, the final temperature of metal and water mixture is 25.0oC. If...

Assume that 4.19 106 kJ of energy is needed to heat a home. If this energy is derived from the combustion of methane (CH4), what volume of methane, measured at STP, must be burned? (HoCombustion for...

A sample of ice weighing 18.02 g, initially at 230.0oC, is heated to 140.0oC at a constant pressure of 1.00 atm. Calculate q, w, E, H, and S for this process. The molar heat capacities (Cp) for...

Acrylonitrile is the starting material used in the manufacture of acrylic fibers (U. S. annual production capacity is more than 2 million pounds). Three industrial processes for the production of...

Impure nickel, refined by smelting sulfide ores in a blast furnace, can be converted into metal from 99.90% to 99.99% purity by the Mond process. The primary reaction involved in the Mond process is...

The following illustration displays the relative number of species when an acid, HA, is added to water. a. Is HA a weak or strong acid? How can you tell? b. Using the relative numbers given in the...

API Ltd. has a quick ratio of 0.80 and working capital in the amount of $ 1,240,000. For each of the following transactions, determine whether the quick ratio and working capital will increase,...

Charger Corporation issued a $ 250,000 bond that matures in five years. The bond has a stated interest rate of 8 percent and pays interest on February 1, May 1, August 1, and November 1. When the...

A recent annual report of Shaw Communications Inc. contained the following note: 10. LONG- TERM DEBT On December 7, 2010, the Company issued $ 500,000,000 senior notes at a rate of 5.50% due December...

A Walt Disney annual report contained the following note: The Company issued 100 billion (approximately $ 920 million) of Japanese yen bonds through a public offering in Japan. The bonds are senior,...

Leons Furniture Limited is one of Canadas largest home furnishing retailers, with a network of 75 stores selling a wide range of furniture, major appliances and home electronics. The company reported...

A solid cylinder and an annular cylinder of equal mass are rolling on the floor with the same speed. (a) If the solid cylinders radius is equal to the annular cylinders inner radius, which cylinder...

A yo-yo is thrown downward with a rotational spin. Reaching the bottom of the string, it climbs back upward. Is the rotational direction reversed at the bottom? Explain.

A uniform meter stick pivoted at its center, as in Example 8.5, has a 100-g mass suspended at the 25.0-cm position. (a) At what position should a 75.0-g mass be suspended to put the system in...

A worker applies a horizontal force to the top edge of a crate to get it to tip forward (Fig. 8.36). If the create has a mass of 100 kg and is 1.6 m tall and 0.80 m in depth and width, what is the...

A rope goes over a circular pulley with a radius of 6.5 cm. If the pulley makes 4 revolutions without the rope slipping, what length of rope passes over the pulley?

A variation of Russell traction (Fig. 8.38) supports the lower leg in a cast. Suppose that the patients leg and cast have a combined mass of 15.0 kg and m1 is 4.50 kg. (a) What is the reaction force...

Amber Corporation reported the following summarized pretax data at the end of each year: Taxable income from the income tax return was as follows: 2013, $ 32,000; 2014, $ 56,000; and 2015, $ 85,000....

An artist wishes to construct a birds and bees mobile, as shown in Fig. 8.40. If the mass of the bee on the lower left is 0.10 kg and each vertical support string has a length of 30 cm, what are the...

A wheel rolls 5 revolutions on a horizontal surface without slipping. If the center of the wheel moves 3.2 m, what is the radius of the wheel?

A meterstick pivoted about a horizontal axis through the 0-cm end is held in a horizontal position and let go. (a) What is the initial tangential acceleration of the 100-cm position? Are you...

A uniform 2.0-kg cylinder of radius 0.15 m is suspended by two strings wrapped around it (Fig. 8.50). As the cylinder descends, the strings unwind from it. What is the acceleration of the center of...

A person opens a door by applying a 15-N force perpendicular to it at a distance 0.90 m from the hinges. The door is pushed wide open (to 120o) in 2.0 s. (a) How much work was done? (b) What was the...

A solid ball of mass m rolls along a horizontal surface with a translational speed of v. What percent of its total kinetic energy is translational?

A pencil 18 cm long stands vertically on its point end on a horizontal table. If it falls over without slipping, with what tangential speed does the eraser end strike the table?

At December 31, 2014, the records of Pearson Corporation provided the following information: Additional information is as follows: a. Revenues include $ 20,000 interest on tax- free municipal bonds....

A uniform sphere and a uniform cylinder with the same mass and radius roll at the same velocity side by side on a level surface without slipping. If the sphere and the cylinder approach an inclined...

(a) When a disk rolls without slipping, should the product be (1) greater than, (2) equal to, or (3) less than vCM? (b) A disk with a radius of 0.15 m rotates through 270 as it travels 0.71 m. Does...

An industrial flywheel with a moment of inertia of rotates with a speed of 7500 rpm. (a) How much work is required to bring the flywheel to rest? (b) If this work is done uniformly in 1.5 min, how...

Circular disks are used in automobile clutches and transmissions. When a rotating disk couples to a stationary one through frictional force, the energy from the rotating disk can transfer to the...

A bocce ball with a diameter of 6.00 cm rolls with-out slipping on a level lawn. It has an initial angular speed of and comes to rest after 2.50 m. Assuming constant deceleration, determine (a) The...

An ice skater has a moment of inertia of 100 kg m2 when his arms are outstretched and a moment of inertia of 75 kg m2 when his arms are tucked in close to his chest. If he starts to spin at an...

On January 1, 2015, Seton Corporation sold a $ 10,000,000, 5.5 percent bond issue. The bonds were dated January 1, 2015, had a yield of 6 percent, pay interest each December 31, and mature 10 years...

Northland Corporation had $ 400,000, 10- year bonds outstanding on December 31, 2014 (end of the fiscal year). Interest is payable each December 31. The bonds were issued (sold) on January 1, 2014....

An ice skater spinning with outstretched arms has an angular speed of 4.0 rad/s. She tucks in her arms, decreasing her moment of inertia by 7.5%. (a) What is the resulting angular speed? (b) By what...

A stationary ice skater with a mass of 80.0 kg and a moment of inertia (about her central vertical axis) of catches a baseball with her outstretched arm. The catch is made at a distance of 1.00 m...

a. Write the number 87,449 in scientific notation with four significant figures. b. Write the number 0.000066600 in scientific notation with five significant figures.

a. Write the number 306,000,000 in scientific notation to the proper number of significant figures. b. Write the number 0.0000558 in scientific notation with two significant figures.

A sample of iron has a volume of 48.2 cm3. What is its mass?

A typical engagement ring has 0.77 cm3 of gold. What mass of gold is present?

A typical mercury thermometer has 0.039 mL of mercury in it. What mass of mercury is in the thermometer?

Assume that you are a portfolio manager for a large insurance company. The majority of the money you manage is from retired schoolteachers who depend on the income you earn on their investments. You...

A planetary space probe is in the shape of a cylinder. To protect it from heat on one side (from the Suns rays), operators on the Earth put it into a barbecue mode, that is, they set it rotating...

A steel ball rolls down an incline into a loop-the-loop of radius R (Fig. 8.52a). (a) What minimum speed must the ball have at the top of the loop in order to stay on the track? (b) At what vertical...

Which pair represents isotopes? He

a. What is the atomic mass of bromine? b. What is the molecular mass of bromine in its elemental form?

a. What is the atomic mass of an oxygen atom? b. What is the molecular mass of oxygen in its elemental form?

Give the formula and name for each ionic compound formed between the two listed ions. a. Cu2+ and F b. Ca2+ and O2 c. K+ and P3

Give the formula and name for each ionic compound formed between the two listed ions. a. Na+ and N3 b. Co2+ and I c. Au3+ and S2

Give the formula and name for each ionic compound formed between the two listed ions. a. Ca2+ and NO3 b. Ca2+ and NO2 c. Sc3+ and C2H3O2

Give the charge each atom takes when it forms an ion. If more than one charge is possible, list both. a. Ca b. I c. Fe

Give the charge each atom takes when it forms an ion. If more than one charge is possible, list both. a. Ag b. Au c. Br

Give the charge each atom takes when it forms an ion. If more than one charge is possible, list both. a. S b. Na c. H

A rare isotope of helium has a single neutron in its nucleus. Write the complete atomic symbol of this isotope.

Americium-241 is a crucial part of many smoke detectors. How many neutrons are present in its nucleus?

Assign oxidation numbers to the atoms in H3PO4.

Write and balance the chemical equation described by Exercise 2. In exercise 2, from the statement sodium metal reacts with water to produce sodium hydroxide and hydrogen, identify the reactants and...

Write a chemical equation that represents SrCl2(s) dissociating in water.

Is it possible for a decomposition reaction to also be a combustion reaction? Give an example to support your case.

Which is a decomposition reaction and which is not? a. 3O2 ( 2O3 b. 2KClO3 ( 2KCl + 3O2

Which is a decomposition reaction and which is not? a. Na2O + CO2 ( Na2CO3 b. H2SO3 ( H2O + SO2

Write the complete and net ionic equations for the neutralization reaction between H2C2O4(s) and Sr(OH)2(aq). Assume the salt is insoluble.

Explain why the net ionic equation for the neutralization reaction between HCl(aq) and KOH(aq) is different from the net ionic equation for the neutralization reaction between HCl(aq) and AgOH.

Write a balanced chemical equation for the neutralization reaction between each given acid and base. Include the proper phase labels. a. HI(aq) + KOH(aq) ( ? b. H2SO4(aq) + Ba(OH)2(aq) ( ?

Assign oxidation numbers to each atom in each substance. a. NaH (sodium hydride) b. NO2 c. NO2 d. AgNO3

Assign oxidation numbers to each atom in each substance. a. CH2O b. NH3 c. Rb2SO4 d. Zn(C2H3O2)2

Assign oxidation numbers to each atom in each substance. a. C6H6 b. B(OH)3 c. Li2S d. Au

Identify what is being oxidized and reduced in this redox equation by assigning oxidation numbers to the atoms. SO3 + SCl2 ( SOCl2 + SO2

Assign oxidation numbers to each atom in each substance. a. P4 b. SO2 c. SO22 d. Ca(NO3)2

Identify the spectator ions in this reaction. What is the net ionic equation? NaCl(aq) + KBr(aq) ( NaBr(aq) + KCl(aq)

Air can be thought of as a mixture of N2 and O2. In 760 torr of air, the partial pressure of N2 is 608 torr. What is the partial pressure of O2?

A gas has an initial volume of 2.033 L and an initial temperature of 89.3 K. What is the volume if temperature is changed to 184 K? Assume pressure and amount are held constant.

A gas has an initial volume of 14.98 L and an initial temperature of 238 K. What is its new temperature if volume is changed to 12.33 L? Assume pressure and amount are held constant.

A sample of 7.55 g of He has a volume of 5,520 mL and a temperature of 123C. What is its pressure in torr?

A sample of Ne has a pressure of 0.772 atm and a volume of 18.95 L. If its temperature is 295 K, what mass is present in the sample?

A sample of NO is collected over water in a 75.0 mL container at 25C. If the total pressure is 0.495 atm, how many grams of NO are collected?

A sample of ClO2 is collected over water in a 0.800 L container at 15C. If the total pressure is 1.002 atm, how many grams of ClO2 are collected?

What is the total pressure of a gas mixture containing these partial pressures: PNe 312 torr, PHe = 799 torr, and PAr = 831 torr?

A 772 mL container has a mixture of 2.99 g of H2 and 44.2 g of Xe at 388 K. What are the partial pressures of the gases and the total pressure inside the container?

A sample of H2 is collected over water in a 3.55 L container at 50C. If the total pressure is 445 torr, how many moles of H2 are collected?

A sample of CO is collected over water in a 25.00 L container at 5C. If the total pressure is 0.112 atm, how many moles of CO are collected?

What is the pressure in pascals if a force of 4.88 kN is pressed against an area of 235 cm2?

Air, a mixture of mostly N2 and O2, can be approximated as having a molar mass of 28.8 g/mol. What is the density of air at 1.00 atm and 22C? (This is approximately sea level.)

Air, a mixture of mostly N2 and O2, can be approximated as having a molar mass of 28.8 g/mol. What is the density of air at 0.26 atm and 26C? (This is approximately the atmospheric condition at the...

On the surface of Venus, the atmospheric pressure is 91.8 atm, and the temperature is 460(C. What is the density of CO2 under these conditions? (The Venusian atmosphere is composed largely of CO2.)

HNO3 reacts with iron metal according to Fe(s) + 2HNO3(aq) ( Fe(NO3)2(aq) + H2(g) In a reaction vessel, 23.8 g of Fe are reacted but only 446 mL of H2 are collected over water at 25C and a pressure...

A serving of breakfast cereal usually has 110 Cal. How many joules of energy is this?

A sample of He goes from 19.4(C to 55.9(C when 448 J of energy are added. What is the mass of the helium? How many moles of helium is this?

Draw an energy level diagram for the chemical reaction in Exercise 9. In exercise 9, Nitrogen gas reacts with oxygen gas to make NO(g) while absorbing 180 kJ. Is this process exothermic or...

How many kilojoules are given off when 17.8 mol of CH4(g) react? CH4(g) + 2O2(g) ( CO2(g) + 2H2O()H = 890.1 kJ

How many kilojoules are absorbed when 0.772 mol of N2(g) reacts? N2(g) + 2NO(g) ( 2N2O(g) H = 73.8 kJ

Glucose is the main fuel metabolized in animal cells: C6H12O6 + 6O2 ( 6CO2 + 6H2O H = 2,799 kJ How much energy is given off when 100.0 g of C6H12O6 react?

Exercise 9 described the formation of glucose in plants, which take in CO2 and H2O and give off O2. Is this process exothermic or endothermic? If exothermic, where does the energy go? If endothermic,...

What is the wavelength of light if its frequency is 3.79103 Hz?

Write the abbreviated electron configuration for each atom in Exercise 7. In exercise 7, write the complete electron configuration for each atom. a. Si, 14 electrons b. Sc, 21 electrons

Which atom has the higher IE? a. C or Ne b. Rb or I

A third-row element has the following successive IEs: 738, 1,450, 7,734, and 10,550 kJ/mol. Identify the element.