Exam 4: Energy and Physical Properties

Convert 0.917 atm to millibars.

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. -Four balloons are filled from the cylinder. The pressure reading _______________________.

When you inhale and exhale does your rib cage raise or lower? Why?

What is the specific heat of a substance if it requires 475 cal to raise the temperature of a 67-gram sample from 25°C to 43°C?

The boiling point of the substance shown below will be ______________________ when compared to that of substance in the image. .

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 nitrogen atom in the lower right ammonia molecule is a hydrogen bond _____________________.

The pressure of a gas is dependent on temperature.

A sample of nitrogen occupies a volume of 543 mL at 30°C and 772 torr. If the temperature is constant, what will be the pressure if the volume changes to 375 mL?

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)_______________________.

Examine the following representation of a change of state. Which of the following is the correct term for this change?

Which of the following phase changes does not involve a solid?

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. -Sun shines on the cylinder and warms it, the pressure reading________________________.

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