3 years ago

How many places are there for electrons in the innermost shell of an atom? A. 2 B. 4 C. 8 D. 12

1 answer:

5 0

Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.

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Explanation:

Below is an attachment containing the solution

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3 years ago

A child kicks a ball horizontally with a speed of 4.8 m/s off a deck 3.5 m off the ground. How far, in meters, from the deck doe

Vesna [10]

Answer:

2.605m

Explanation:

Using the formula for calculating Range (distance travelled in horizontal direction)

Range R = U√2H/g

U is the speed = 4.8m/s

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g is the acc due to gravity = 9.8m/s²

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Substitute into the formula and get H

3.5 = 4.8√2H/9.8

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0.7292 = √2H/9.8

square both sides

0.7292² = 2H/9.8

2H = 0.7292² * 9.8

2H = 5.21

H = 5.21/2

H = 2.605m

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3 years ago

Mass is the amount of matter in an object what describes the amount of space the object takes up?

saveliy_v [14]

C volume because the volume take up the Mater and space around it thing

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2 years ago

A train 400 m long is moving on a straight track with a speed of 81.4 km/h. The engineer applies the brakes at a crossing, and l

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Answer:

86.5m

Explanation:

first convert km/h

then

81.4*1000/60*60=22.6

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3 years ago