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Yuri [45]
2 years ago
13

336083255 pass wZE2XQ​

Biology
1 answer:
kramer2 years ago
6 0

Answer:

what is your name

you are a boy

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Which of the following describes the difference between nitrogen-14 and nitrogen-15? ( point)
AveGali [126]

Answer:

D. Nitrogen-14 has 7 electrons, 7 protons, 7 neutrons nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons

Explanation:

In an atom, number of electrons is equal to the number of protons.  And the number of neutrons is equal to the difference between the mass number of the atom and the atomic number. For Nitrogen 14, electron is 7, proton is also 7 as number  of electrons and number of protons are equal. So, the neutron will be 14-7= 7. For Nitrogen 15, electron number is 7 so proton number will be also 7. Neutron number for nitrogen 15 will be 15-7= 8. That's why the answer is option number 4.

8 0
2 years ago
The number of hydrogen atoms in 6NH3 is
mamaluj [8]

No 6 is common for N and H. 3 is only for H(Hydrogen).

For finding the number of hydrogen atoms we should multiply 6 with 3

 So, 6*3 = 18. So there will be 18 hydrogen atoms in 6NH₃

3 0
3 years ago
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If there are 10,000 calories of net primary productivity in an ecosystem, how much energy will be generally available to a prima
Ilia_Sergeevich [38]
<span>Trophic level—90% of energy consumed at trophic level is used by the consumer for survival and reproduction. The remaining 10% is transferred to the next trophic level. So the answer is 10,000 x 0.9 or 9,000 calories will  be generally available to primary consumer</span>
7 0
3 years ago
Two Difference between radicle and plumule<br>​
Butoxors [25]

Answer:

radical forms root , plumule forms shoot

6 0
2 years ago
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Is the moon accelerating as it orbits the earth? explain your reason​
Nataly_w [17]

Answer:

Gravitational attraction provides the centripetal force needed to keep planets in orbit around the Sun and all types of satellite in orbit around the Earth. This means gravity makes the Moon accelerate all the time, even though its speed remains constant.

Explanation:

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2 years ago
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