Each period in the periodic table corresponds to an energy sublevel or the principle energy level?

1 answer:

ELEN [110]3 years ago

6 0

Each period in the periodic table corresponds to a principal energy level

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telo118 [61]

I would say
D. Gravity pulled particles of dust and gas together to form planets.Hope it helped!

8 0

3 years ago

vodka [1.7K]

multiply the number of each atom with its molecular mass. (see the periodic table)

5*12 + 12*1 = 72 gram per mole.

Or more accurately: 5*12.01078 + 12*1.007947 = 72.149264 g/mole

7 0

3 years ago

Shtirlitz [24]

Answer:

atomic mass ( N =14 , H = 1×3 that means 14+3=17

340gram×17gram / mole

=5780mole

atomic mass ( H= 1×2 ,O= 16 =16+2 =18

90gram×18gram /mole

=1620mole

I think 340g ammonia (NH3)

6 0

3 years ago

vladimir2022 [97]

Answer:

b. single displacement

7 0

2 years ago

Sophie [7]

Answer:

- One mole of oxygen was used in this reaction.

- Two moles of water were produced from this reaction.

Explanation:

In addition: - Two moles of hydrogen were used.

4 0

3 years ago