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Svetlanka [38]
4 years ago
6

PLZ HELP ME ASAP IM TAKING AN EXAM :(

Chemistry
2 answers:
Sever21 [200]4 years ago
3 0

Answer:

The nucleus contains crotons and neutrons with electrons on the outer shell

Hope this helps!

matrenka [14]4 years ago
3 0

Answer:

B - The Nucleus has an overall positive charge

Explanation:

Nuclei consist of Neutrons and Protons; Electrons are not included in the Nucleus, they surround it.

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I’m pretty sure the velocity increases as the time of an object falling increases :)
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3 years ago
To which factor can the principles of Nicholas Steno be applied?
Tcecarenko [31]

Answer:

the rock layers of the Grand Canyon

Explanation:

Steno's law are laws that applied to sedimentary rocks. These laws helps in understanding sedimentary sequences.

Sedimentary rocks are derived from the deposition of pre-existing rocks in basins. In order to understand some important relationships between these rock layers, Steno's  law offer a good insight.

Steno's law are often applied when we want to do relative dating of rock layers. Some of the laws are:

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7 0
4 years ago
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if 185 mg of acetaminophen were obtained from a tablet containing 350 mg of acetaminophen what would be the weight percentage re
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Do part divided by total times 100.
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4 years ago
Which of the following turns blue with a universal indicator (Litmus paper)
Aleks04 [339]

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8 0
3 years ago
Calculate the work, w, gained or lost by the system when a gas expands from 15 L to 45 L against a constant external pressure of
marta [7]

Answer:

Work done by the system = 4545 J

Explanation:

The expression for the calculation of work done is shown below as:

w=-P\times \Delta V

Where, P is the pressure

\Delta V is the change in volume

From the question,  

\Delta V = 45 - 15 L = 30 L

P = 1.5 atm

w=-1.5\times 30\ atmL

Also, 1 atmL = 101 J

So,  

w=-1.0\times0.75\times 101\ J=-4545\ J (negative sign implies work is done by the system)

<u>Work done by the system = 4545 J</u>

6 0
3 years ago
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