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katovenus [111]
3 years ago
8

When a calcium atom forms an ion, it loses two electrons. What is the electrical charge of the calcium ion? a) −2 b) −1 c)+ 1 d)

+ 2
Physics
1 answer:
MrRa [10]3 years ago
8 0

Answer:

Option D

+2

Explanation:

We know that Calcium has 20 electrons and 20 protons. It lost two electrons, it has 20 protons, but only 18 electrons. This makes calcium a positive ion with a charge of +2.

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Which variables are involved in understanding Kepler's third law of motion? (1 point)
Zielflug [23.3K]

The variables which are involved in understanding Kepler's third law of

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7 0
2 years ago
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Rashid [163]
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7 0
3 years ago
Explain why greenhouse gases in the atmosphere cause an increase in temperature?
harkovskaia [24]
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6 0
3 years ago
A driver notices an upcoming speed limit change from 45 mi/h (20 m/s) to 25 mi/h (11 m/s). If she estimates
zloy xaker [14]

Answer:

-2.79 m/s²

Explanation:

Given:

v₀ = 20 m/s

v = 11 m/s

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Find: a

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(11 m/s)² = (20 m/s)² + 2a (50 m)

a = -2.79 m/s²

Round as needed.

8 0
4 years ago
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Y_Kistochka [10]
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3 years ago
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