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ss7ja [257]
2 years ago
15

The crust of earth may include........... A- continets and ocean floors. B-continents only. C-layers of sedimentary Rocks and co

ntinents. D-all of the above
Chemistry
1 answer:
Inessa [10]2 years ago
7 0
D all of the above because it has all of them at the crust
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a 25 ml sample of gas is in a syringe at 22C if it was cool down to 0 C what will the volume of the gas become
Tpy6a [65]

Answer: 0.023 liters

Explanation:

Given that,

Original volume of gas (V1) = 25mL

[convert 25mL to liters

If 1000ml = 1L

25ml = 25/1000 = 0.025L]

Original temperature of gas (T1) = 22°C

[Convert 22°C to Kelvin by adding 273

22°C + 273 = 295K]

New volume of gas (V2) = ?

New temperature of gas (T2) = 0°C

[Convert 0°C to Kelvin by adding 273

0°C + 273 = 273K]

Since volume and temperature are given while pressure is held constant, apply the formula for Charle's law

V1/T1 = V2/T2

0.025L/295K = V2/273K

To get the value of V2, cross multiply

0.025L x 273K = 295K x V2

6.825L•K = 295K•V2

Divide both sides by 295K

6.825L•K/295K = 295K•V2/295K

0.023 L = V2

Thus, the new volume of the gas will be 0.023 litres

6 0
3 years ago
what kind of change occurs when sodium and chlorine combine ? Describe the matter before and after the change
DaniilM [7]
Sodium is a silver-colored metal which is soft enough to cut with a knife. It is an extremely reactive metal, and is always found naturally in ionic compounds, not in its pure metallic form. Pure sodium metal reacts violently (and sometimes explosively) with water, producing sodium hydroxide, hydrogen gas, and heat:


Chlorine is a poisonous, yellow-green gas, with a very sharp odor, a

Chemical change happen cuz these 2 elements will combine to form a new compound which’s NaCl ( table salt )
5 0
3 years ago
The capacity of a muscle to continue contracting over a period of time without fatigue is called:
siniylev [52]
<span>B. muscular endurance

</span>The capacity of a muscle to continue contracting over a period of time without fatigue is called muscular endurance.
NOT:
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<span>C. cardiovascular endurance. </span>
<span>D. power.</span>
6 0
3 years ago
As stars get older, before they collapse, they throw off dust, heavy atoms and other materials an form a new
andre [41]

Answer:

B or D

Explanation:

.....I'm pretty sure I earned on some kids tv show

7 0
2 years ago
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This is a natural Landmark can vary greatly in size as a result of flooding and evaporation what is its correct name and locatio
nignag [31]
I believe it is the Great Plains in Nebraska.
4 0
2 years ago
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