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WINSTONCH [101]
3 years ago
5

PLEASE HELPPPP...If you have a mass of 70 kg and you are standing on a platform 8 m above the ground, what is your gravitational

potential energy?
Chemistry
1 answer:
vesna_86 [32]3 years ago
7 0

Answer: 5491.72

Explanation:

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Define what natural gas is, explain how it forms, and<br> what it is used for today.
natta225 [31]

Answer:

is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly including varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium.

It is formed when layers of decomposing plant and animal matter are exposed to intense heat and pressure under the surface of the Earth over millions of years. The energy that the plants originally obtained from the sun is stored in the form of chemical bonds in the gas

for heating, cooking, and electricity generation. It is also used as a fuel for vehicles and as a chemical feedstock in the manufacture of plastics and other commercially important organic chemicals.

7 0
3 years ago
How many moles are in 1.9 x 1046 atoms of chromium?
faust18 [17]

Answer:

<h2>3.156 × 10²² atoms</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{1.9 \times  {10}^{46} }{6.02 \times  {10}^{23} }  \\  = 3.156 \times  {10}^{22}

We have the final answer as

<h3>3.156 × 10²² atoms</h3>

Hope this helps you

8 0
3 years ago
An object weighing 90 n has a volume of 45 ml and a mass of 9.0 g what is its density
UNO [17]
D= mass over volume

So, density equals 9.0g divided by 45ml.

SO, D=.25 g/ml

I'm not 100% sure this is correct, though. Best if luck. ♡
7 0
4 years ago
Question 2<br> How does an object become negatively charged
Alex
When to positive atoms connect
4 0
3 years ago
Read 2 more answers
If the volume of a gas is 958 mL at 75.0 C, at what temperature would the volume of the gas decrease to 822 mL
zhenek [66]

75.0 degrees Celsius = 75.0 + 273 = 348 K.

Assuming pressure is held constant,

\frac{958}{348}=\frac{822}{T_{2}}  \\ \\ \frac{348}{958}=\frac{T_{2}}{822} \\ \\ T_{2}=\frac{(822)(348)}{958} \approx 299 \text{ K} \\ \\ T_{2} \approx 299-273=\boxed{26^{\circ} \text{ C}}

3 0
2 years ago
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