All categories

3 years ago

Which of these statements best describes a similarity between combustion and respiration?

2 answers:

8 0

Both respiration and combustion can produce carbon dioxide. Therefore, of the answers in your list only the third one is correct.

LenaWriter [7]3 years ago

8 0

Answer: Both release carbon dioxide into the atmosphere.

Explanation: Combustion is a process which releases carbon dioxide and water in the presence of oxygen .

For eg- Combustion of methane in presence of oxygen will lead to the release of the carbon dioxide and water.

$CH_{4} + O_{2}\rightarrow CO_{2} + H_{2}O$

Respiration is the process taking place in living organism which involves the production of the energy. It is mainly proceeded in the body through lungs with the intake of the oxygen and release of the carbon dioxide.

You might be interested in

the heat of fusion of acetone is 5.7 kJ/mol. Calculate to two significant figures the entropy change when 6.3 mol of acetone mel

shtirl [24]

<u>Answer:</u> The entropy change of the process is $2.0\times 10^2J/K$

<u>Explanation:</u>

To calculate the entropy change for different phase at same temperature, we use the equation:

$\Delta S=n\times \frac{\Delta H_{f}}{T}$

where,

$\Delta S$ = Entropy change

n = moles of acetone = 6.3 moles

$\Delta H_{f}$ = enthalpy of fusion = 5.7 kJ/mol = 5700 J/mol (Conversion factor: 1 kJ = 1000 J)

T = temperature of the system = $-94.7^oC=[273-94.7]=178.3K$

Putting values in above equation, we get:

$\Delta S=\frac{6.3mol\times 5700J/mol}{178.3K}\\\\\Delta S=201.4J/K=2.0\times 10^2J/K$

Hence, the entropy change of the process is $2.0\times 10^2J/K$

4 0

3 years ago

Why is electrolysis used not carbon to extract metal

ss7ja [257]

Because metals that are more reactive than carbon wont react with it.

8 0

3 years ago

Which of the following conditions would lead to a small population size? a. a low birth to death ratio b. a high birth to death

Vinil7 [7]

Answer:

Choice A.

A low birth to death ratio

Explanation:

A low birth to death ratio means that people are dying faster than they are being born. This leads to a decreasing population size.

4 0

2 years ago

One mechanism for the synthesis of ammonia proposes that N₂ and H₂ molecules catalytically dissociate into atoms:N₂ ⇆ 2N(g) log

Pavlova-9 [17]

The artificial fixation of nitrogen (N2) has enormous energy, environmental, and societal impact, the most important of which is the synthesis of ammonia (NH3) for fertilizers that help support nearly half of the world's population.

<h3>Artificial fixation of nitrogen</h3>

a) The equilibrium constant expression is Kp=PCH4 PH2 OP CO×PH 23.

(b) (i) As the pressure increases, the equilibrium will shift to the left so that less number of moles are produced.

(ii) For an exothermic reaction, with the increase in temperature, the equilibrium will shift in the backward direction.

(iii) When a catalyst is used, the equilibrium is not disturbed. The equilibrium is quickly attained

To learn more about equilibrium constant visit the link

brainly.com/question/10038290

#SPJ4

6 0

1 year ago

Which term describes the weather in an area over a long period of time?

3241004551 [841]

Answer:

climate

Explanation:

causes it happens over a long period of time

6 0

3 years ago