A toy that is green under white light is illuminated by blue and green light, what color do you perceive?

How do you converts gallons to teaspoons

just olya [345]

Answer:

hvxujbcyyii

Explanation:

hhhhukbvb

3 0

3 years ago

What happens to the molarity of a salt solution if the number of moles of salt in the solution is multiplied by three and the nu

Dovator [93]

Answer:

The molarity of the solution remains unchanged.

Explanation:

Consider the formula for the molarity $M$ of a solution:

$\displaystyle M = \frac{n}{V}$ ,

where

$n$ is the number of moles of solute in this solution, and
$V$ is the volume of the solution.

For this salt solution,

$n_{1} = 3\;n_{0}$ , and
$V_{1} = 3\;V_{0}$ .

Initial molarity:

$\displaystyle M_{0} = \frac{n_{0}}{V_{0}}$ .

Final molarity:

$\displaystyle M_{1} = \frac{n_{1}}{V_{1}} = \frac{3\;n_{0}}{3\;V_{0}} = \frac{n_{0}}{V_{0}} = M_{0}$ .

In other words, the molarity of the solution remains unchanged.

8 0

3 years ago

A research balloon at ground level contains 12 L of helium (He) at a pressure of 725mmHg and a temperature of 30.00∘C. When the

Helga [31]

<u>Answer:</u> The temperature when the volume and pressure has changed is -27.26°C

<u>Explanation:</u>

To calculate the temperature when pressure and volume has changed, we use the equation given by combined gas law. The equation follows:

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1,V_1\text{ and }T_1$ are the initial pressure, volume and temperature of the gas

$P_2,V_2\text{ and }T_2$ are the final pressure, volume and temperature of the gas

We are given:

$P_1=725mmHg\\V_1=12L\\T_1=30.00^oC=[30+273]K=303K\\P_2=252mmHg\\V_2=28L\\T_2=?K$

Putting values in above equation, we get:

$\frac{725mmHg\times 12L}{303K}=\frac{252mmHg\times 28L}{T_2}\\\\T_2=\frac{252\times 28\times 303}{725\times 12}=245.74K$

Converting this into degree Celsius, we get:

$T(K)=T(^oC)+273$

$245.74=T(^oC)+273\\T(^oC)=-27.26^oC$

Hence, the temperature when the volume and pressure has changed is -27.26°C

5 0

3 years ago

If you have 5 unknowns and they were secondary alcohol aldehyde, carboxylic acid, amine, and alkane Put plan to identify the unk

Finger [1]

Answer:

the unknowns

Explanation:

7 0

3 years ago

Explain how carbon is conserved in the carbon cycle.

jek_recluse [69]

<h2> Interconversion of energy.</h2>

Explanation:

Carbon moves from plants and animals to soils in the form of cycle.
When we take in oxygen we release carbon dioxide gas $(CO_{2})$ into the atmosphere.
Animals and plants give carbon dioxide gas through the process called respiration and transpiration.
From fossil fuels carbon moves in the atmosphere.
The fuels like wood or coal when burned releases carbon dioxide into the atmosphere.
The Matter is conserved in the carbon cycle as carbon absorbs energy and then it releases the same amount of energy.
Carbon changes from one form to another, but the total amount of carbon remains the same.

8 0

3 years ago