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How does an increase in temperature affect the rate of a chemical reaction?

An increase in temperature will increse the rate of a chemical reaction, and a decrease in temperature will decrese the rate. This is because the hotter the reactant particles are, the more kinetic energy th...
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13783 Views

Describe your holiday

in this speaking task, the student is usually expected to talk for about 5 minutes in a coversation with the teacher. it is important to use some key words and speech acts for the task. you have some time to...
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Answered by Sara C. • Italian tutor
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The external environment in which businesses operate can have a significant effect on their success. To what extent do you think that the external environments in markets are favorable for businesses at the moment? Justify your answer with reference to ex

The ‘external environment’ is the combination of factors that occur outside of the business. These include: political, economical, social, technological, legal and environmental factors. In terms of the exte...
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What are the two different types of circular flow of income models?

The first is in a closed economy, where there are just households and firms present and thus no exchange between the two in terms of spending and transfer of goods and services. The second is in an open econ...
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Answered by Rohan T. • Economics tutor
6885 Views

Gas exchange happens in the alveoli of the lungs. What are three adaptations of the alveoli that allow for this?

Thin alveolar walls for O2 and CO2 to travel through - To travel across the membrane, gases have to be dissolved, so the alveolar walls are moist - Large surface area to volume ratio allows for maximum gas e...
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Answered by Sarah L. • Biology tutor
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