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Olenka [21]
3 years ago
7

Which of the following is an observation?

Chemistry
1 answer:
Alex Ar [27]3 years ago
4 0

Answer:

C.) Squid sometimes squirt ink.

Explanation:

Definition of observation:

Observing something or someone carefully or in order to gain information.

A.) This is not an observation. It is more like an opinion.

B.) This also isn't an observation. It is a question.

C.) This is making an observation.

Hope this helped : D

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g Which ONE of the following pure substances will exhibit hydrogen bonding? A) methyl fluoride, FCH3 B) dimethyl ether, CH3C–O–C
luda_lava [24]

Answer:

C) formaldehyde, H2C=O.

Explanation:

Hello,

In this case, given that the hydrogen bondings are known as partial intermolecular interactions between a lone pair on an electron rich donor atom, particularly oxygen, and the antibonding molecular orbital of a bond between hydrogen and a more electronegative atom or group. Thus, among the options, C) formaldehyde, H2C=O, will exhibit hydrogen bonding since the lone pair of electrons of the oxygen at the carbonyl group, are able to interact with hydrogen (in the form of water).

Best regards.

8 0
3 years ago
A cube of steel has dimensions 0.2 mx 0.2 m * 0.2 m. What is
never [62]

Answer: 800”

Explanation:

5 0
3 years ago
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How many moles of chlorine (Cl) atoms are in a sample of 1.72 × 1022 atoms?
Ainat [17]
<span>1mole of Cl atoms contain the Avogadro's number 6x10 exp 23(10 to the power of 23)
there for xmoles of Cl atoms is contained in 1.72x1022atoms
xmoles =1.72x1022 divided by 6x10exp 23
2.93 exp -23moles(2.93 x10 to the power of -23)



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3 0
3 years ago
As a 7 inch candle burns down, its height decreases 1/2 inch each hour. How many hours does it take for the candle to burn compl
serg [7]

Answer:

14

Explanation:

8 0
3 years ago
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The results of the gold foil experiment led to the conclusion that an atom is
viva [34]

\sf\large \blue{\underbrace{\red{Answer⋆}}}:

The nucleus of an atom of the element is positively charged and atom has a hollow space inside it.

Explanation:

This experiment was conducted by Rutherford in this experiment. He placed a gold foil and surround it with a screen.

And He exposed gold foil in alpha particles rays in which he noticed that most rays passed through atom which conclude that atom has a large space, some rays get deflected and some reverse their path this show that the positive charge of nucleus of an atom.

4 0
2 years ago
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