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2 years ago

Which of the following chemical substances has a triple

Chemistry

1 answer:

Otrada [13]2 years ago

3 0

Answer:

c. carbon monoxide

Explanation:

no one bothers to read why anyways so look at the picture

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The phases of the moon repeat in a cycle about every _______ days. *

DaniilM [7]

Answer:

The moon revolves around the Earth once every 29.5 days

Explanation:

So around 30 days.

8 0

3 years ago

For the reaction C6H14(g) ------> C6H6(g) + 4H2(g), the rate of formation of hydrogen gas, H2 was found to be 2.5 x 10-2 atm/

riadik2000 [5.3K]

Answer : The rate of consumption of hexane is, $6.25\times 10^{-3}atm/s$

Explanation :

The general rate of reaction is,

$aA+bB\rightarrow cC+dD$

Rate of reaction : It is defined as the change in the concentration of any one of the reactants or products per unit time.

The expression for rate of reaction will be :

$\text{Rate of disappearance of A}=-\frac{1}{a}\frac{d[A]}{dt}$

$\text{Rate of disappearance of B}=-\frac{1}{b}\frac{d[B]}{dt}$

$\text{Rate of formation of C}=+\frac{1}{c}\frac{d[C]}{dt}$

$\text{Rate of formation of D}=+\frac{1}{d}\frac{d[D]}{dt}$

$Rate=-\frac{1}{a}\frac{d[A]}{dt}=-\frac{1}{b}\frac{d[B]}{dt}=+\frac{1}{c}\frac{d[C]}{dt}=+\frac{1}{d}\frac{d[D]}{dt}$

From this we conclude that,

In the rate of reaction, A and B are the reactants and C and D are the products.

a, b, c and d are the stoichiometric coefficient of A, B, C and D respectively.

The negative sign along with the reactant terms is used simply to show that the concentration of the reactant is decreasing and positive sign along with the product terms is used simply to show that the concentration of the product is increasing.

The given rate of reaction is,

$C_6H_{14}(g)\rightarrow C_6H_6(g)+4H_2(g)$

The expression for rate of reaction :

$\text{Rate of disappearance of }C_6H_{14}=-\frac{d[C_6H_{14}]}{dt}$

$\text{Rate of formation of }C_6H_6=+\frac{d[C_6H_6]}{dt}$

$\text{Rate of formation of }H_2=+\frac{1}{4}\frac{d[H_2]}{dt}$

As we know that, the partial pressure is directly proportional to the concentration. So,

$\text{Rate of reaction}=-\frac{dP_{C_6H_{14}}}{dt}=+\frac{dP_{C_6H_6}}{dt}=+\frac{1}{4}\frac{dP_{H_2}}{dt}$

Given:

$+\frac{dP_{H_2}}{dt}=2.5\times 10^{-2}atm/s$

As,

$-\frac{dP_{C_6H_{14}}}{dt}=+\frac{1}{4}\frac{dP_{H_2}}{dt}=2.5\times 10^{-2}atm/s$

and,

$\frac{dP_{C_6H_{14}}}{dt}=\frac{1}{4}\times 2.5\times 10^{-2}atm/s$

$\frac{dP_{C_6H_{14}}}{dt}=6.25\times 10^{-3}atm/s$

Thus, the rate of consumption of hexane is, $6.25\times 10^{-3}atm/s$

4 0

3 years ago

Two voltaic cells are to be joined so that one will run the other as an electrolytic cell. In the first cell, one half-cell has

vladimir1956 [14]

Au/Cr cell will run as a voltaic cell and Co/Zn cell will run as an electrolytic cell.

<h3>What is an electrolytic cell?</h3>

An electrolytic cell that uses electrical energy to enable a non-spontaneous redox reaction is known as an electrolytic cell.

Certain chemicals can be electrolyzed using electrolytic cells, which are electrochemical cells.

For example, water can be electrolyzed to create gaseous oxygen and gaseous hydrogen with the use of an electrolytic cell.

The following are the three essential parts of electrolytic cells:

Cathode (which is negatively charged for electrolytic cells)

Anode (which is positively charged for electrolytic cells)

Electrolyte

The reactions for each half cell is given by

$Au^{3+}(aq) + 3e^- \rightleftharpoons Au(s)$ ; E° = 1.50 V

$Cr^{3+}(aq) + 3e^- \rightleftharpoons Cr(s)$ ; E° = –0.74 V

$Co^{2+}(aq) + 2e^- \rightleftharpoons Co(s)$ ; E° = –0.28 V

$Zn^{2+}(aq) + 2e^- \rightleftharpoons Zn(s)$ ; E° = –0.76 V

When the Au/Cr cell will run as a voltaic cell and Co/Zn cell will run as an electrolytic cell, the a difference in the voltages is produced

$E^o_{series} = E^o_{Au/Cr} - E^o_{Co/Zn}$ = 2.24 V – 0.48 V = 1.76 V

Learn more about electrolytic cell:

brainly.com/question/19854746

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7 0

1 year ago

Which sentences describe decomposers in a food chain?

Elan Coil [88]

Answer:

hey are the final link in the energy flow in a food chain or a food web. They are fungi and animals that feed on dead organic mattet.

Explanaticuz im naruto uzamaki

5 0

2 years ago

Do you think that all foods containing carbohydrates are healthful? Explain plz:(

deff fn [24]

Answer:

Yes

Explanation:

because some foods have carbohydrates but are healthy

8 0

2 years ago