a nonposionous beetle raises its backside in the air to make a predator thinks its posionous this is an example of what

The volume of a gas decreases from 15.7 mºto 11.2 m3 while the pressure changes from 1.12 atm to 1.67 atm. If the

Svetlanka [38]

Answer:

Approximately $261\; \rm K$ , if this gas is an ideal gas, and that the quantity of this gas stayed constant during these changes.

Explanation:

Let $P_1$ and $P_2$ denote the pressure of this gas before and after the changes.

Let $V_1$ and $V_2$ denote the volume of this gas before and after the changes.

Let $T_1$ and $T_2$ denote the temperature (in degrees Kelvins) of this gas before and after the changes.

Let $n_1$ and $n_2$ denote the quantity (number of moles of gas particles) in this gas before and after the changes.

Assume that this gas is an ideal gas. By the ideal gas law, the ratios $\displaystyle \frac{P_1 \cdot V_1}{n_1 \cdot T_1}$ and $\displaystyle \frac{P_2 \cdot V_2}{n_2 \cdot T_2}$ should both be equal to the ideal gas constant, $R$ .

In other words:

$R = \displaystyle \frac{P_1 \cdot V_1}{n_1 \cdot T_1}$ .

$R =\displaystyle \frac{P_2 \cdot V_2}{n_2 \cdot T_2}$ .

Combine the two equations (equate the right-hand side) to obtain:

$\displaystyle \frac{P_1 \cdot V_1}{n_1 \cdot T_1} = \frac{P_2 \cdot V_2}{n_2 \cdot T_2}$ .

Rearrange this equation for an expression for $T_2$ , the temperature of this gas after the changes:

$\displaystyle T_2 = \frac{P_2}{P_1} \cdot \frac{V_2}{V_1} \cdot \frac{n_1}{n_2} \cdot T_1$ .

Assume that the container of this gas was sealed, such that the quantity of this gas stayed the same during these changes. Hence: $n_2 = n_1$ , $(n_2 / n_1) = 1$ .

$\begin{aligned} T_2 &= \frac{P_2}{P_1} \cdot \frac{V_2}{V_1} \cdot \frac{n_1}{n_2}\cdot T_1 \\[0.5em] &= \frac{1.67\; \rm atm}{1.12\; \rm atm} \times \frac{11.2\; \rm m^{3}}{15.7\; \rm m^{3}} \times 1 \times 245\; \rm K \\[0.5em] &\approx 261\; \rm K\end{aligned}$ .

4 0

3 years ago

What is decay constant?

Sloan [31]

The size of atoms is the answer

3 0

3 years ago

This is for my tennis Class<br> What differences did you find between racquest ball and tennis?

Maru [420]

Answer:

Tennis Rackets are Typically Bigger Than Racquetball Rackets. Tennis rackets can be up to 29 inches long, with most between 27-29 inches. Racquetball rackets cannot exceed 22 inches according to game rules. ... Having a larger racket in tennis gives you more surface area to return the ball with power and accuracy.

Explanation:

4 0

3 years ago

Wood, plastic, rubber and air are good insulators because A. they conduct charge. B. charge flows easily. C. they don’t have fre

Julli [10]

C. They don't have free electrons.
The only things capable of conducting a charge are things that have charged particles in them that are free to move, e.g free electrons, free positions, or dissociated ions

6 0

3 years ago

Please help! i'm horrible at this

frez [133]

Answer:

a = Δv/t = (vf - vi)/t = (0 - 5)/4 = -1.25 m/s²

Explanation:

You may or may not need the negative sign, depending on how the question designer was thinking about the problem.

4 0

4 years ago