When it comes to making decisions, which of the following statements are true? Select all that apply.

a. Individuals will make the same choices no matter how information is presented.

Calculate the rms speed for $CO$ molecules at $25^{\circ} C$. What is the ratio of this speed to that of Ar atoms at the same temperature?

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

A property of all muscle cells is elasticity, which means that the tissue is able to stretch.

Hydrogen has two naturally occurring isotopes,

$$^1 H$$

and

$$^2H.$$

Chlorine also has two naturally occurring isotopes,

$$^{35}CI$$

and

$$^{37}Cl$$

Thus, hydrogen chloride gas consists of four distinct types of molecules:

$$^ { 1 } \mathrm { H } ^ { 35 } \mathrm { Cl } , ^ { 1 } \mathrm { H } ^ { 37 } \mathrm { Cl } , ^ { 2 } \mathrm { H } ^ { 35 } \mathrm { Cl } ,$$

and

$$^ { 2 } \mathrm { H } ^ { 37 } \mathrm { Cl }$$

Place these four molecules in order of increasing rate of effusion.

Select all of the statements that are axioms of probability.

Calculate the rms speeds of CO and

$$Cl_2$$

molecules at 300 K.

Which of the following statements about the tundra is not true?

• a. Tundra means “treeless land.”
• b. Plants and animals in the tundra have adapted to the extreme climate.
• c. Temperatures in the tundra range from extreme highs to extreme lows.
• d. The alpine tundra can be found on mountaintops.

What is the difference between an organism's ecosystem and its habitat?

Place the following gases in order of increasing average molecular speed at

$$25 ^ { \circ } \mathrm { C } : \mathrm { Ne } , \mathrm { HBr } , \mathrm { SO } _ { 2 } , \mathrm { NF } _ { 3 } , \mathrm { CO }$$

Determine whether each of the following changes will increase, decrease, or not affect the rate with which gas molecules collide with the walls of their container: increasing the temperature

Which of the following characteristics best describes a corporation? a. Mutual agency b. A board of investors c. Limited liability of stockholders d. Not for profit

Suppose you have two 1-L flasks, one containing

$$N_2$$

at STP, the other containing

$$CH_4$$

at STP. How do these systems compare with respect to number of molecules.

The speed of sound in different gases at a certain temperature T depends on the molar mass of the gases. Show that

$${\frac{v_1}{v_2}} = \sqrt{\frac{M_2}{M_1}},$$

where

$$v_1$$

is the speed of sound in a gas of molar mass

$$M_1$$

and

$$v_2$$

is the speed of sound in a gas of molar mass

$$M_2$$

.

Which country has the lowest rate of savings?