whether or not temperature has any effect on the diffusion rate of a gas. Explain your answer.

Explain why the container of water must be inverted when a gas is collected by displacement of water.

Describe how the mass of a gas particle affects its rate of effusion and diffusion.

Suppose two gases in a container have a total pressure of 1.20 atm. What is the pressure of Gas B if the partial pressure of Gas A is 0.75 atm?

Find the union of the sets.

$$\{ 0,1,3,5 \} \cup \{ 2,4,6 \}$$

Solve each equation for x. For part(c), remember a variable symbol, like a, b, and c, represents a number. a. $2 x-6=10$ b. $-3 x-3=-12$ c. $a x-b=c$

A gondola tower in an amusement park casts a shadow that is 80 feet long, while a sign that is 4 feet tall casts a shadow that is $3 \frac{1}{2}$ feet long. Draw a diagram for the situation. Then find the height of the tower.

Air is a mixture of gases. By percentage, it is roughly 78 percent nitrogen, 21 percent oxygen, and 1 percent argon. (There are trace amounts of many other gases in air.) if the atmospheric pressure is 760 mmHg, what are the partial pressure of nitrogen, oxygen, and argon in the atmospheric?

Why the surface of mercury in a thermometer is convex; that is, the surface is higher at the center.

Choose the correct term to complete each sentence. The six ratios of the lengths of the sides of a right triangle are known as the _____.

A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the given table. Test the claim that the amount of smoking is independent of seat belt use. A plausible theory is that people who smoke more are less concerned about their health and safety and are therefore less inclined to wear seat belts. Is this theory supported by the sample data?

$$\begin{matrix} & \text{Number of Cigarettes Smoked per Day}\\ & \text{0} & \text{1-14} & \text{15-34} & \text{35 and over}\\ \text{Wear seat belts} & \text{175} & \text{20} & \text{42} & \text{6}\\ \text{Don't wear seat belts} & \text{149} & \text{17} & \text{41} & \text{9}\\ \end{matrix}$$

Explain why water forms a meniscus when it is in a graduated cylinder.

Convert the polar equation to rectangular form. $r=-3 \csc \theta$

Describe the factors that affect viscosity.