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nekit [7.7K]
3 years ago
10

[Gradpoint-Question AK-4] Which equation represents a combustion reaction?

Chemistry
2 answers:
harina [27]3 years ago
4 0
Would the answer be d wouldn't it

Readme [11.4K]3 years ago
3 0
The answer is D. It's combustion of ethane to carbon dioxide and water (complete combustion).
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Classify the following mixturesin their proper column​
PolarNik [594]

Answer:

homogeneous mixtures: iron,alcohol,zonrox,wine.

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8 0
2 years ago
Hess’s law
Delvig [45]

From the statement of Hess' law, the enthalpy of the reaction A---> C is +90 kJ

<h3>What is Hess' law?</h3>

Hess' law of constant heat summation states that for a multistep reaction, the standard enthalpy of reaction is always constant and is independent of the pathway or intermediate routes taken.

From Hess' law, the enthalpy change for the reaction A ----> C is calculated as follows:

A---> C = A ---> B + B ---> C

ΔH of A---> C = 30 kJ + 60 kJ

ΔH = 90 kJ

Therefore, the enthalpy of the reaction A---> C is +90 kJ

The above reaction A---> C can be shown in the enthalpy diagram below:

A -------------------> C (ΔH = +90 kJ)

\ /

\ / (ΔH = +60 kJ)

(ΔH = +30 J) \ /

> B

Learn more about enthalpy and Hess law at: brainly.com/question/9328637

8 0
2 years ago
Why is it better to measure the percent change in mass<br> ratherthan just using the change in mass?
never [62]

Answer: The result is presented in proportion which gives a clearer understanding and accurate result.

Explanation: Percentage change in mass is the proportion of the initial mass of a substance changed after sometime. The results is presented as a percentage making it more accurate and can help to give future reference to weight calculations.

Change is Mass is the mass of a substance left after sometime mostly given in grams. It is not as accurate as percentage change in mass. It is generally better to show results in percentage change in mass as it gives a better understanding of what mass of a substance was lost after a given period or after application of energy like Heat or increased temperature.

6 0
3 years ago
________ are solutions containing ions that react with acids or bases to minimize their effects.
myrzilka [38]
<span>ions are solutions containing ions that react with acids or bases to minimize their effects. </span>
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3 years ago
Which of he following compounds is always part of an aqueous solution
weqwewe [10]

Answer: Water because if we say aqueous it means it resembles water or related to water.

7 0
3 years ago
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