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sdas [7]
3 years ago
9

_____ are the results of a thoroughly tested hypothesis?

Chemistry
1 answer:
Andru [333]3 years ago
6 0

i think its theory but im not to sure

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The movement of the liquid in a thermometer shows changes in temperature. An increase in temperature
zhuklara [117]

Answer:

When heated, the molecules of the liquid in the thermometer move faster, causing them to get a little further apart. This results in movement up the thermometer. When cooled, the molecules of the liquid in the thermometer move slower, causing them to get a little closer together.

Explanation:

I hope it can help

3 0
3 years ago
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How mant grams are there in 7.15 x 10^24 molecules of water?
worty [1.4K]

Answer:

B. 214.02

Explanation:

1 mol of water weighs 18.015 gm and contains 6.023 × 10²³ molecules

From question, We have 7.15 × 10²⁴ molecules

Dividing we get (7.15 × 10 ²⁴) ÷ ( 6.023 × 10²³) = 11.871 molecules

Now, Weight of water = 11.871 × 18.015 = 213.85 which is nearer to option B

4 0
2 years ago
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Why is acetic anhydride added slowly to a dichloromethane solution of the other reactants?
storchak [24]
Acetic anhydride is the only monocarboxylic acid anhydride which is an acylating agent capable of modifying reactions. The dichloromethane is the reaction solvent.

The acetic anhydride should be added slowly through a separatory funnel to other reactants so as to avoid a runaway reaction, also known as thermal runaway. By doing this the reaction mixture boils as gently as possible while stirring. This phenomenon occurs in situations where an increase in temperature changes the conditions in a way that leads to destructive result brought about by a further increase in temperature.
8 0
3 years ago
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Te second period at the bottom of the table is called
katovenus [111]

Answer:

The second row elements are called Actinidies . abbreviated as Ac

Explanation:

5 0
3 years ago
Which of the following is NOT true about the role tectonic forces play in the rock cycle?
worty [1.4K]

Answer:

i believe it is number #3

Explanation:

hope this helps

8 0
3 years ago
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