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CaHeK987 [17]
3 years ago
10

You and your Canadian pen pal enjoy talking about nature together. While your friend describes some birds that she saw today, yo

u realize that one of the birds she described sounds like one you have seen in your home state of Indiana. You remember that all organisms have common and scientific names. Which would be most appropriate to use to confirm with your friend? (1 point) O You should use the bird's common name since it is easier to pronounce than the scientific name. You should use the scientific name because it is local to North America. O You should use the bird's scientific name since that name is the same everywhere in the world. You should use the bird's common name since it is based on the bird's characteristics. he​
Chemistry
1 answer:
sergeinik [125]3 years ago
5 0

Answer:

you should use the scientific name because it is the same everywhere in the world

Explanation:

the scientific name of anything and everything is the same around the world.

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Answer:

John Dalton's Atomic Model Below ⬇

Explanation:

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2 years ago
Submit At 25.0 C, a 10.00 L vessel is filled with 5.00 atm of Gas A and 7.89 atm of Gas B. What is the mole fraction of Gas B?
Firlakuza [10]

Answer:

the mole fraction of Gas B is xB= 0.612 (61.2%)

Explanation:

Assuming ideal gas behaviour of A and B, then

pA*V=nA*R*T

pB*V=nB*R*T

where

V= volume = 10 L

T= temperature= 25°C= 298 K

pA and pB= partial pressures of A and B respectively = 5 atm and 7.89 atm

R= ideal gas constant = 0.082 atm*L/(mol*K)

therefore

nA= (pA*V)/(R*T) = 5 atm* 10 L /(0.082 atm*L/(mol*K) * 298 K) = 2.04 mole

nB= (pB*V)/(R*T) = 7.89 atm* 10 L /(0.082 atm*L/(mol*K) * 298 K) = 3.22 mole

therefore the total number of moles is

n = nA +nB= 2.04 mole +  3.22 mole = 5.26 mole

the mole fraction of Gas B is then

xB= nB/n= 3.22 mole/5.26 mole = 0.612

xB= 0.612

Note

another way to obtain it is through Dalton's law

P=pB*xB , P = pA+pB → xB = pB/(pA+pB) = 7.69 atm/( 5 atm + 7.89 atm) = 0.612

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3 years ago
Which of the following is not a correct chemical equation for a double displacement reaction?
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i just took the test the answer is B

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2 years ago
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The SI base units and their physical quantities are the metre for measurement of length, the kilogram for mass, the second for time, the ampere for electric current, the kelvin for temperature, the candela for luminous intensity, and the mole for amount of substance.
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Name the following compound
const2013 [10]

Answer:

bromine

Explanation:

hoefully this is right

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2 years ago
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