3 years ago

Distinguish a substance from a mixture. give two examples of each

1 answer:

amm18123 years ago

4 0

substance is matter of particular or definite chemical constitution ex: iron, methane
mixture are two or more substances that have been combined to retain their individual chemical characteristics ex: salt water, cola

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Which of the following numbers will produce the same number when rounded to two significant figures? (2.3)

prohojiy [21]

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The 0 after 1 is not significant and does not affect the value of the number; therefore, when the number will be rounded to two significant figures, it will become 2.1, so it will be the same.

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Svet_ta [14]

Answer:

<em>X-rays have a shorter wavelength than microwaves.</em>

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Microorganisms and humus have little impact on soil health. Please select the best answer from the choices provided T F

egoroff_w [7]

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Nonamiya [84]

Answer:

7 hours

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3 years ago

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Write the mechanism of the reaction of methyl benzoate to form methyl 2-nitrobenzoate.

Igoryamba

The question is incorrect, nitration of methylbenzoate occurs at 3 position to get, methyl 3-nitrobenzoate.

This is because, in present reaction the reactant i.e. methylbenzoate, has low electron density at m-position.

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A detailed reaction mechanism for formation of product is provided below.

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4 years ago