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katovenus [111]
2 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]2 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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Ronch [10]
ANSWER:
Ca(OH)2 shows a decrease of solubility with the increase of temperature.

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6 0
2 years ago
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______ uses radioactive materials to create contrast in the body and help form images of the structure and function of organs.
satela [25.4K]

Answer:

Nuclear medicine or PET scanning (Positron Emission Tomography)

Explanation:

Not super sure what your question is looking for but I think it can be either. PET is a technology used in the nuclear medicine field, and nuclear medicine is a broad field of using the technology the question described.

8 0
2 years ago
2×3.14√(1.0m/(9.8〖ms〗^(-1) )=)
il63 [147K]

This is the period in a simple harmonic motion which is 2 seconds in this question.

<h3>What is Period ?</h3>

The period of an oscillatory object can be defined as the total time taken  by a vibrating body to make one complete revolution about a reference point.

We are given the below question

2×3.14√(1.0m/(9.8〖ms〗^(2) )= T

This question can as well be expressed as

2π√(L/g) which is equal to period T.

In a nut shell, Period T = 2×3.14√(1.0m/9.8)

T = 6.28√0.102

T = 6.28 × 0.32

T = 2.006 s

Therefore, the period T of the oscillation is 2 seconds approximately.

Learn more about Period here: brainly.com/question/12588483

#SPJ1

8 0
11 months ago
Where is the us constitution does it mention anything about local governments
andre [41]
The ninth and 10th amendments refer that certain powers And laws be delegated to lower our governments i.e. state and local
6 0
2 years ago
The elements least likely to form bonds are found in what group
klasskru [66]
It is in the noble gas group which has a full valence electron shell found in group 18 
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2 years ago
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