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kozerog [31]
3 years ago
9

Which of these is an accurate source of evidence for an investigation?

Chemistry
1 answer:
Feliz [49]3 years ago
4 0

Answer:

observations

Explanation:

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Which of these is an example of a prosthesis?
GREYUIT [131]

Answer:

hearing aid

Explanation:

an artificial body part

6 0
3 years ago
Read 2 more answers
3. Once magnesium (Mg) gives up electron(s) to become an ion, it will become
xeze [42]

Answer:

Option B. Cation that is smaller than the original atom.

Explanation:

Magnesium is a divalent element. This implies that magnesium can give up 2 electrons to become an ion (cation) as shown below:

Mg —> Mg²⁺ + 2e¯

Next, we shall write the electronic configuration of magnesium atom (Mg) and magnesium ion (Mg²⁺). This can be written as follow:

Mg (12) = 2, 8, 2

Mg²⁺ (10) = 2, 8

From the above illustration, we can see that the magnesium atom (Mg) has 3 shells while the magnesium ion (Mg²⁺) has 2 shells.

This simply means that the magnesium ion (Mg²⁺) i.e cation is smaller that the original magnesium atom (Mg).

5 0
3 years ago
How much forces is needed to accelerate a 3 kg skateboard at 5 m/s2?
Ghella [55]

Answer:

15 kg

Explanation:

happy to help:)

3 0
3 years ago
Calculate the relative density of carbon monoxide and carbon dioxide with respect to air.
JulsSmile [24]
Density is proportional to molar mass, assuming pressure and temperature remain constant. Therefore, since CO has a molar mass of 28 and CO2 has a molar mass of 44:
The relative density of CO vs air is 28/29 = 0.9655.
The relative density of CO2 vs air is 44/29 = 1.517.

3 0
3 years ago
*CONNEXUS, Anyone have the answers for chemistry b, chemical reaction systems!? Please
NeX [460]

If you want to optimize environmental impact, the ores should be sifted at the site before transporting.

<h3>What is an ore?</h3>

An ore refers to the raw material from which a material is made. Usually, ores are obtained in the raw state from the earth. Metal ores are very important in the manufacturing industry.

In order to reduce the environmental impact of the manufacturing of ores in the metallurgical industry, the ores should be sifted at the site before transporting.

Learn more about environmental impact : brainly.com/question/1023358

6 0
2 years ago
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