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asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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You are asked to prepare 15% (w/w) solution of common salt.How much amount of water will be required to prepared this solution?

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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Draw a table which shows the comparison between the chemical properties of alkali and alkaline earth metals.

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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Explain the thermal expansion in liquids with an activity?

asked Nov 21, 2018 in Physics by danish (1.0m points)

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Describe physical methods of metallic coating to protect iron from rusting.

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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Compare the physical properties of alkali and alkaline earth metals.

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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How many periods are considered normal periods?

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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Why the size of atom does not increases regularly in a groups?

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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What are some uses of conductors and non-conductors.

asked Nov 21, 2018 in Physics by danish (1.0m points)

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Why the ionic compounds have high melting and boiling points?

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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Which element has the highest electronegativity? Give reason

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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Write the trend of atomic size in period and groups?

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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How is cooling produced by evaporation explain?

asked Nov 21, 2018 in Physics by danish (1.0m points)

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What is the difference between single and double covalent bond? Give two examples of both.

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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Action and reaction are always equal and opposite then how does a body move?

asked Nov 19, 2018 in Physics by danish (1.0m points)

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Write the name of those factors which effect to evaporation

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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How does boiling differ from evaporation?

asked Nov 21, 2018 in Physics by danish (1.0m points)

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Suggest ways in which individuals , organisms and government can help to make the earth a better place to live

asked Nov 23, 2018 in Science by danish (1.0m points)

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What is the difference between evaporation and vapoure pressure

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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Define bond pair?

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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