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Digiron [165]
3 years ago
11

Complete the following equations (note that the equations are not balanced). Use the act

Chemistry
1 answer:
devlian [24]3 years ago
8 0

Answer:

Explanation:

a

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Which of the following describes the energy transformations that occur when a toaster is used to make toast?
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Answer:

Thermal energy (B)

Explanation:

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3 years ago
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Redox reactions can be written as two half-reactions, focusing on the gain or loss of electrons by one of the chemical substance
lutik1710 [3]

Answer:

C) H⁺

Explanation:

When we are balancing the reaction<em> in an acid medium</em>, hydrogen is balanced using the <u>H⁺</u> species. This is most likely the intended answer of your question.

When the reaction takes place not in an acid medium, but in <em>an alkaline one</em>, then hydrogen is present as the OH⁻ species. However this option is not given in your question.

Thus the answer is option C).

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3 years ago
Which statements describe what happens in a redox reaction? Check all that apply. A. Electrons move from one substance to anothe
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A redox reaction is a reaction that involves both reduction and oxidation, it involves a reducing agent which looses electrons and undergoes oxidation and an oxidizing agent that gains electrons (reduction). I believe the following are true about redox reactions; Electrons move from one substance to another, One atom gains electrons and one looses electrons.
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3 years ago
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Which of the following methods for increasing the rate of chemical reaction increases the effectiveness of the interactions betw
denpristay [2]

Answer:

Increasing the surface area of the reactants

Explanation:

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Collision theory suggests that for a reaction to occur, the reactant particles must collide with the right orientation. As the surface area of the reactants are increased, the reactants particles collide more with the right orientation bringing about definite increase in the rate of reaction.

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3 years ago
A chemical reaction was carried out three times. The mass of the product was 8.93 g for the first trial, 8.94 g for the second t
joja [24]

The three mass value measure are precise mass

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precise mass is term use to describe data from experiment that have  been repeated several times. An experiment that yield tightly grouped  set of data it has a high precision.  8.93 , 8.94  and 8.92 are precise mass since they have repeated severally

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