Exam 4: Energy and Physical Properties

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 melting point of a solid composed of the particles shown in the image will be _________________.

Ethylene dichloride is an effective cooling agent when allowed to evaporate. The heat of vaporization is 85.3 cal/g. How much heat could be removed from the skin if 4.25g of ethylene dichloride were sprayed on and allowed to evaporate?

Which of the following increases as temperature increases?

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?

In which state of matter are the attractive forces between molecules the weakest?

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

Consider the following three substances. Enter the letter of the appropriate substance in the blank provided.If none applies,enter the word none. -Substance(s) that _____ is(are) soluble in water.

Consider the image given below of a pair of ammonia molecules.Complete the following sentences using the appropriate terms listed below. covalent bond hydrogen bond ion-dipole attraction donor acceptor -The dashed line in the figure represents a__________________.

To convert from joules to kilojoules, move the decimal in the number three places to the right.

At high altitudes atmospheric pressure is lower than at sea level. Which of the following is true?

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

The two compounds below have the same molecular formula. One would expect A to stronger dispersion forces than B.

A gas cylinder contains three gases: oxygen, nitrogen, and helium. The partial pressure of oxygen is 4.7 psi and the partial pressure of nitrogen is 3.0 psi. If the reading on the pressure gauge is as shown below. What is the partial pressure of the He?

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

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

One would expect a compound with the molecular formula C₄H₁₀ to have a lower boiling point than one with the formula C₇H₁₆.

Which of the following is true as a student slides down a waterslide?

An expandable plastic container contains 255 mL of nitrogen gas at 25°C and 688 torr. What is the volume of the container at 47°C and 489 torr?

When alcohol is mixed with water which is the solvent?

Consider the following three substances. Enter the letter of the appropriate substance in the blank provided.If none applies,enter the word none. -Substance _____ would form a heterogeneous mixture with water.