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Ede4ka [16]
4 years ago
12

A _ reaction occurs when a substance usually containing carbon reacts with oxygen to produce energy in the form of light and hea

t.
Chemistry
1 answer:
trapecia [35]4 years ago
3 0
A COMBUSTION reaction occur when a substance ...........................................
Combustion reaction is also known as burning. It occurs when an hydrocarbon react with oxygen to yield carbon dioxide, water and energy in the form of light and heat. Combustion reaction can not take place in the absence of oxygen.
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<em>Answer:</em>

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4 0
3 years ago
Which has the greater number of particles, 1 mole br2 or 80g br2?
KengaRu [80]
They have the same amount of particles.

If you convert 80g to moles, you will find that 80g of diatomic bromine is 1 mole.
3 0
4 years ago
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3 years ago
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The respiration rate of a goldfish is measured. The goldfish is then placed in cold water and the respiration rate is measured a
Ivenika [448]

Answer:

Temperature of the water

Explanation:

In every study, there must be independent and dependent variables. An independent variable is the variable that is changed in order to obtain a response. In this case, the temperature of the water is being changed, the response in this experiment is the respiration rate of the goldfish.

Thus the respiration rate of the goldfish is the dependent variable because it is controlled by the temperature of the water and changes accordingly.

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