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3 years ago

Explain how changing the amount of greenhouse gases in the atmosphere affects the flow of heat out of Earth's atmosphere.

Chemistry

1 answer:

antiseptic1488 [7]3 years ago

8 0

Explanation:

The added greenhouse gases absorb the heat. They then radiate this heat. Some of the heat will head away from the Earth, some of it will be absorbed by another greenhouse gas molecule, and some of it will wind up back at the planet's surface again. With more greenhouse gases, heat will stick around, warming the planet.

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A process stream contains 450 mol/s benzene and 375 mol/s toluene. Calculate the mole fraction of benzene in the process stream.

Tema [17]

Answer:

0.5455

Explanation:

The moles of benzene in the process stream in 1 sec = 450 moles

The moles of toluene in the process stream in 1 sec = 375 moles

So, according to definition of mole fraction:

$Mole\ fraction\ of\ benzene=\frac {n_{benzene}}{n_{benzene}+n_{toluene}}$

Applying values as:

$Mole\ fraction\ of\ benzene=\frac {450}{450+375}$

Mole fraction of benzene in the process stream = 0.5455

7 0

4 years ago

Enter your answer in the provided box. what is the emf of a cell consisting of a pb2 / pb half-cell and a pt / h / h2 half-cell

sp2606 [1]

Answer:

The emf of the electrochemical cell has been calculated to be 3.364.

in order to calculate the emf we need to apply Nernst equation.

The emf has been the potential of the cell in the reaction with the change in the electrons in the reaction. The emf of the cell has been given by the Nernst equation as -

emf= E⁰ cell - 0.059/n. log 1/concentration

Computation for the emf of the cell

The given cell has the number of electrons transfer, n= 2

The concentration of Pb2= 0.57 M

The concentration of H= 0.090 M

The cell potential of the reaction has been= -0.126

Substituting the values for the emf of the cell:

emf= -0.126- 0.059/2 * log 1/ [0.57]x [0.090] ²

emf= 1.555* 2.337

emf=3.634 v

The emf of the electrochemical cell has been calculated to be 3.634 v.

Learn more about emf here-

brainly.com/question/9425530

#SPJ4

4 0

2 years ago

Question 3 (1 point) What happens when the temperature of an object increases?

zhannawk [14.2K]

Answer: When the temperature of an object increases, the average kinetic energy of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.

Explanation: Hope this helps!!

3 0

3 years ago

Read 2 more answers

Write a short note on detection of nitrogen in the organic compound

exis [7]

ajdhrhahdjdjdndoxhdebdixhxb dbds ebenej

8 0

3 years ago

If 3.000g of k2co3 were used in this experiment (instead of khco3),

KiRa [710]

A. The balanced chemical equation is correct:

k2co3 + 2hcl --> 2kcl + co2 + h2o

B. First let us calculate the moles of K2CO3.

moles K2CO3 = 3 g / (138.205 g/mol) = 0.0217 mol

From the equation, we need 2 moles of HCl per 1 mole of K2CO3, hence:

moles HCl needed = 0.0217 mol * 2 = 0.0434 mol

So the volume required is:

volume HCl = 0.0434 mol / 6 M = 7.24 x 10^-3 L = 7.24 mL

C. The number of moles of HCl and KCl is equal hence:

moles KCl = 0.0434 mol

The molar mass of KCl is 74.5513 g/mol, so the mass is:

mass KCl = 0.0434 mol * 74.5513 g/mol = 3.24 grams

8 0

3 years ago