Exam 4: Energy and Physical Properties

A balloon with a volume of 5.65 L at room temperature (25°C) is placed in insulated container that is cooled with dry ice where the temperature is -19°C. What is the volume of the balloon in the container when its temperature reaches -19°C? Assume no change in pressure.

Which of the following is the strongest intermolecular attractive force?

The following is a mathematical expression of Guy-Lussac's law.

In the following sentences, fill in the blanks with the appropriate terms from the list below. high low electrolyte nonelectrolyte ion-ion attraction dipole-dipole attraction hydrogen bond dispersion force -The nitrogen atom in the lower right ammonia molecule is a hydrogen bond _____________________.

The specific heat of ice is 0.480 cal/g°C. How much heat will it take to raise the temperature of 22.50 g of ice from -30.0 °C to -20.0°C?

The use of the energy in food by the body to cause a muscle to contract is an example of

Air pressure can be expressed in which of the following units?

In the following sentences, fill in the blanks with the appropriate terms from the list below. high low electrolyte nonelectrolyte ion-ion attraction dipole-dipole attraction hydrogen bond dispersion force -This substance is water-soluble. A solution of this compound in water would be classified as a(n)_______________________.

The two compounds below have the same molecular formula. One would expect A to have a higher boiling point than B.

Consider two identical soccer balls. Ball A is kicked and attains a velocity 25 m/sec. Ball B is kicked and attains a velocity of 15 m/sec. At these velocities, Ball A has the greater kinetic energy.

A convenient reference set of conditions for gases is STP (Standard Temperature and Pressure). There conditions are defined as exactly 0°C and 1.00 atm. If a sample of a gas have a volume of 2.57 L at a temperature of 27°C and 1.25 atm. What is the volume of this gas at STP?

Filling the blank with the appropriate term from the list below. Charles's Boyle's Guy-Lussac's Combined Gas -The following equation is an expression of ______________ law.

The pressure of a gas is dependent on temperature.

Either the Kelvin or the Celsius temperature scale can be used in gas law calculations.

Diethyl ether historically was used as an anesthetic. Currently, it is a very important solvent. The freezing point and boiling point of diethyl ether are -116 °C and 37 °C, respectively. Diethyl ether is a solid at 0 °C.

Helium (He) is used to fill balloons and is stored in a metal cylinder with pressure gauges on the top. For each of the following changes, fill the blank with one of the following terms to describe what happens to the pressure reading on the gauge. increases decreases remains constant -Sun shines on the cylinder and warms it, the pressure reading________________________.

Specific heat is the conversion factor that allows for the calculation of energy based on temperature changes.

Helium (He) is used to fill balloons and is stored in a metal cylinder with pressure gauges on the top. For each of the following changes, fill the blank with one of the following terms to describe what happens to the pressure reading on the gauge. increases decreases remains constant -The cylinder was not secured and fell over, producing a sizable dent in the side. The pressure reading ____________________.

Filling the blank with the appropriate term from the list below. Charles's Boyle's Guy-Lussac's Combined Gas -The variation in pressure with temperature is defined by ____________________law.

Filling the blank with the appropriate term from the list below. Charles's Boyle's Guy-Lussac's Combined Gas -The effect of increasing the temperature on the volume of a gas can be calculated by using _________law.