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VARVARA [1.3K]
3 years ago
10

List 2 metals that can be used as fuel

Chemistry
1 answer:
Kazeer [188]3 years ago
6 0

Answer:

Nickel and Copper

Explanation:

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James chadwick, like ernest rutherford, had to infer that neutrons were present in
tatyana61 [14]

The claim that scientific knowledge is based on observation and inference is that science is always about  empirical evidence , and when making observations , we can get some evidences and inference which serves a conclusion gotten on basis of evidence and reasoning.

<h3>What is scientific knowledge ?</h3>

Science knowledge serves as the knowledge that is based and focus on  empirical evidence.

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7 0
2 years ago
Write a complete chemical formula including physical state symbol for nitrogen
Hitman42 [59]
Nitrogen exist as a diatomic molecule in the nature in gaseous state at room temperature. So, formula and symbol could be expressed as:

N_2(g)
6 0
3 years ago
Which choice is an element? Air, oxygen, water, or sodium cholride
Ksju [112]

Answer:

Oxygen is an element.

Explanation:

Out of the choices listed, oxygen is the only element. The other choices are incorrect because air is a mixture of nitrogen, oxygen, carbon dioxide, water vapors, and some other gases; water is a compound of hydrogen and oxygen; and sodium chloride is a compound of sodium and chloride ions; meanwhile, oxygen is a pure element.

7 0
3 years ago
What is the density of object C? Does it sink or float in water?
nirvana33 [79]

Answer:

0.96 g/cm3, and it will float!

Explanation:

I've explained how to do this before (remember me? lol), but ig I'll do it again..

By looking at the graph you can see that Object C has a mass of ~24 grams and a volume of ~25 cm3

Density = Mass/Volume -> 24 grams/25 cm3 = 0.96 g/cm3

Density of water is 1 g/cm3

Object C is less dense than water and therefore will float (just barely, though)

:)

8 0
3 years ago
Read 2 more answers
Lithium, sodium and potassium all belong to the same group of the periodic table.
Lady_Fox [76]

Answer:

Yes they are found in same period

4 0
3 years ago
Read 2 more answers
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