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3 years ago

An organisms ___________ adaptations are its physical traits that help it survive in its environment.

Chemistry

1 answer:

pishuonlain [190]3 years ago

7 0

Answer:c

Explanation:

I think

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Radiation is spontaneously emitted from hydrogen-3 nuclei, but radiation is not spontaneously emitted from hydrogen-l nuclei or

miv72 [106K]

Answer : Option 1) nuclei of $H^{1}$ and nuclei of $H^{2}$ only.

Explanation : Radiation is spontaneously emitted from nuclei of $H^{3}$ because this isotope of hydrogen is highly radioactive as compared to other isotopes of hydrogen namely; nuclei of $H^{1}$ and nuclei of $H^{2}$ .

They have much stable nucleus as compared to nuclei of $H^{3}$ .

The more it is unstable the more radiations will be emitted from its nucleus.

5 0

3 years ago

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How much time would it take to distribute one avagadro's number of wheat grains if 10^10 grains are A)1.9*10^2 years B)1.9*10^10

Makovka662 [10]

Answer:

It takes 1.9 $\times 10^{6}$ years to distribute all the grains.

Explanation:

In one second, $10^{10}$ grains of wheat are distributed.

We are supposed to find the time it would take to Distribute Avogadro number of grains.

1 avogadro number = 6.022 $\times 10^{23}$

Number of grains distributed in 1 day = 86400 $\times 10^{10}$

= 8.64 $\times 10^{14}$

Number of grains distributed in 1 year= 8.64 $\times 10^{14} \times 365$

= 3.1536 $\times 10^{17}$

Time taken = $\frac{Number of grains to be distributed}{grains distributed in 1 year}$

= $\frac {6.022 \times 10^{23}}{3.1536\times 10^{17}}$

= 1.9 $\times 10^{6}$

7 0

3 years ago

HELP ASAP

Bezzdna [24]

A. I think sorry if it’s wrong

5 0

2 years ago

Methane (CH4) undergoes combustion. Which products form? please help will give brainliest if correct

allochka39001 [22]

Answer:

B. CO₂ and H₂O.

Explanation:

When any organic substance undergoes complete combustion, it produces carbon dioxide (CO₂) and water (H₂O).

In the case of methane, the balanced reaction is:

CH₄ + 2O₂ → CO₂ + 2H₂O

With the above information in mind the correct answer is option B. CO₂ and H₂O.

When the combustion is incomplete, carbon monoxide (CO) is produced as well.

8 0

3 years ago

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Why is water a polar molecule but a fluorine molecule is not?

yKpoI14uk [10]

Answer:

The electrons in H2O are not shared equally, making it a polar molecule. The molecules in flourine, F2, are shared equally, making it not a polar molecule.

Explanation:

8 0

2 years ago