3 years ago

In an atomic model that includes a nucleus, positive charge is

1 answer:

7 0

<span>Because protons are positively charged and neutrons have no charge then it is safe to say that such an atomic model would have the positive charge concentrated in the center of an atom (option d).</span>

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PLEASE PEOPLE I NEED HELP PLEASE IF YOU SEE THIS HELP ME ! :,( !!!!! PLEASEEEEEEEEE

Tems11 [23]

Answer:

year 1 is 5.5%

year 2 is 7.5%

year 3 is 10.2%

Explanation:

since,

length of the transect covered in seaweed / total lenth of transect x 100

then,

0.55 / 10.0 x 100 = 5.5

and

0.75 / 10.0 x 100 = 7.5

and

1.02 / 10.0 x 100 = 10.2

you could also just move the decimal to the right once

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3 years ago

I need help in science

astraxan [27]

The answer is D . I hope this help you :) .

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2 years ago

How many moles are in 20g of potassium (K)?

otez555 [7]

Explanation:

Hi for this one u just need to remember and use the equation.

$moles = \frac{mass}{mr}$

then u find mr of potassium which is 39.1.

then u do

$\frac{20}{39.1}$

you get the answer as 0.5115 write ur answer to 3 significant figures which will be 0.512 moles .

hope this helps :)

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3 years ago

Describe how phospholipids form a barrier between water inside the cell and water outside the cell.

marusya05 [52]

The head of the phospholipids molecule is attracted to water, the tail repels water

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3 years ago

Read 2 more answers

In the following equation,

Nina [5.8K]

It is C It is C It is C

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3 years ago