3 years ago

HELP PLEASE Brainliest

Chemistry

2 answers:

scoray [572]3 years ago

6 0

Answer:

answer c

Explanation:

igomit [66]3 years ago

3 0

Answer: B) The trees where peppered moths rest become lighter in color.

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What substances can be separated into simpler substances only by chemical means?

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A compound is a substance that can be separated into simpler substances only by chemical means.

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Why is Cellular Respiration so important?

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I say it’s A. Hopefully

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3 years ago

2.50 grams F2= _____ grams of F2

Setler79 [48]

Answer:

i think maybe 94.99201599999999

Explanation:

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2 years ago

1826.5g of methanol (CH3OH), molar mass = 32.0 g/mol is added to 735 g of water, what is the molality of the methane 0.0348 m 1.

Snowcat [4.5K]

Answer:

Molality = 1.13 m

Explanation:

Molality is defined as the moles of the solute present in 1 kilogram of the solvent.

Given that:

Mass of $CH_3OH$ = 26.5 g

Molar mass of $CH_3OH$ = 32.04 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{26.5\ g}{32.04\ g/mol}$

$Moles\ of\ CH_3OH= 0.8271\ moles$

Mass of water = 735 g = 0.735 kg ( 1 g = 0.001 kg )

So, molality is:

$m=\frac {0.8271\ moles}{0.735\ kg}$

<u>Molality = 1.13 m</u>

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3 years ago

You do an experiment in which you need 0.25 mole of tyrosine (C,H11 NO3).

Marina CMI [18]

Answer:

B.90.5 g

Explanation:

not 100%sure hehe

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3 years ago