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2 years ago

Edit al least six lines to obtain energy

Chemistry

1 answer:

Elza [17]2 years ago

8 0

Answer:

Sure because of the gravity of the earth

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What term refers to a group of nerve cells that are connected to one another?

vesna_86 [32]

B. Nerve network!

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3 years ago

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"A crosslinked copolymer consists of 57 wt% ethylene (C2H4) repeat units and 43 wt% propylene (C3H6) repeat units. Determine the

ch4aika [34]

Explanation:

Percentage ethylene by weight = 57%

Percentage propylene by weight = 43%

Suppose in 100 grams of polymer:

Mass of ethylene = 57 g

Mass of propylene = 43 g

Moles of ethylene = $\frac{57 g}{28 g/mol}=2.036 mol$

Moles of propylene = $\frac{43g}{42g/mol}=1.024 mol$

1 mole = $N_A =6.022\times 10^{23}$ molecules/ atoms

Units of ethylene = $2.036 mol\times N_A$

Units of propylene = $1.024 mol\times N_A$

a) Fraction of ethylene units:

$=\frac{2.036 mol\times N_A}{2.306 mol\times N_A+1.024 mol\times N_A}=\frac{509}{765}$

b ) Fraction of propylene units:

$=\frac{1.024mol\times N_A}{2.306 mol\times N_A+1.024 mol\times N_A}=\frac{256}{765}$

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3 years ago

Can someone please help

miskamm [114]

Answer:

Explanation:

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3 years ago

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A change in which property of light will have no effect on whether or not the photoelectric effect occurs??? Frequently energy i

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Intensity has no affect on whether or not the photoelectric effect occurs. The determining property is frequency and since frequency and wavelength are inversely proportional, wavelength matters as well. If a frequency of light can't cause the photoelectric effect to happen, no matter what the intensity is, the light can't make it happen.

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Bezzdna [24]

A. I think sorry if it’s wrong

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2 years ago

Edit al least six lines to obtain energy​

Edit al least six lines to obtain energy