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algol [13]
3 years ago
8

How and why was the periodic table set up?

Chemistry
2 answers:
vlabodo [156]3 years ago
4 0
In a series of columns, or groups, and rows, or periods.
skad [1K]3 years ago
4 0
The person above me is 100% correct!!
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A 2 kg cat is stuck in a tree 10 m above the ground. How much GPE does it have?
Dovator [93]

Answer:

196J, but C. at 200 J comes close.

Explanation:

Potential energy due to gravity is given by:

PEgrav = mass • g • height

where g is the acceleration due to gravity.  We'll use 9.8 N/kg (on Earth).

PEgrav = mass • g • height

PEgrav = (2 kg) • (9.8 N/kg) • (10 m)

PEgrav = 196 N*m

1 N*m = 1 Joule

PEgrav = 196 J

C. at 200 J comes close.  The solution probably used a value of g equal to 10 N/kg)

3 0
2 years ago
How do I Unscramble this?<br><br> reusirtneadn rahi<br><br> _ _ _ _ _ _ _ _ _ _ _ _ hair
vladimir2022 [97]
The answer is unrestrained hair.

Have a nice day!
3 0
4 years ago
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What happens to the potential energy of water in a stream as gravity pulls it downhill
love history [14]
I believe it becomes kinetic energy, however I’m not entirely sure. I hope it helped though.
8 0
3 years ago
What oxidation number would you expect an iodide ion to have?
ss7ja [257]

Answer:

Explanation:

An iodide ion is the ion I−. Compounds with iodine in formal oxidation state −1 are called iodides.

4 0
3 years ago
You have been given a sample of an unknown
anastassius [24]

Answer:. an ionic compound

Explanation:

If it conducts electricity when molten, then it is an ionic compound. No covalent compound conducts electricity in molten state because their crystal lattice is not composed of ions. There are ionic solids which conduct electricity when molten but are insoluble in water such as alumina Al2O3. The solid is soluble in strong acid solutions.

6 0
4 years ago
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