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Please help and explain the answers to me


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1.Please help these two big questions! 1) DVB claims that non-polar solutes such as hexane do not dissolve in water because ...

solve in water because there are no intermolecular forces that act between hexane and water. A) Explain why this statement is incorrect. (1 mark C) B) Explain the correct reason why non-polar molecules dissolve better in other non-polar molecules as oppose to polar molecules. (2 marks C)
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2.In a 3-page paper, written in APA format using proper spelling/grammar, research the topic of learning disabilities of American children ...

ng disabilities of American children and address the following: When is a child's communication considered delayed? Please include stages of development regarding communication with examples. What are speech disorders and how are they characterized? What are language disorders? How does they affect language development and education? How does a speech language pathologist help children with communication disorders? Explain with specific techniques and examples. Be sure to include APA citations for any resources you used as references.
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7.So I have some science homework on machines. We have to find ten machines and explain how they make work ...

work easier. I have several problems: a) I dont have any ideas on machines. B) I need help really in general. So far i have 7 examples them being a wheelbarrow, a pulley, a ramp, an ax(e) and a hockey stick. I was wondering if you could help me explain how they make work easier. Also, I'm having trouble identifying the input and ouput forces on these machines. Please help. Btw, im grade 8.
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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

mathematicsalgebra Physics