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I am Lyosha [343]
3 years ago
13

If you reply with a link, I will report you​

Chemistry
1 answer:
tresset_1 [31]3 years ago
8 0

Answer:

1 2 2

Explanation:

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. Why do you use a pencil and not a pen to mark TLC plates?
KonstantinChe [14]

Answer:

Pencil is always used to mark chromatography paper or TLC plates because ink may run and interfere with the chromatogram. ... As soon as the paper/plate is taken out, mark the solvent front with a pencil before the solvent evaporates and the front becomes impossible to see.

7 0
3 years ago
2. What type of element is most abundant: metals, nonmetals, or metalloids
Sedbober [7]
Nonmetals is most likely the answer 
4 0
3 years ago
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What type of experiments can be carried out to determine the spontaneity of a reaction? Does spontaneity have any relationship t
Alexeev081 [22]

Answer:

Following are the responses to this question:

Explanation:

They can measure the spontaneity of the reaction with the form,\Delta G =\Delta H - T \Delta S Substituting the values of \Delta H, T,\ and \  \Delta S in the above expression information mostly on the playfulness of the reaction would be given to us from the expression above. This reaction is spontaneous if the price of \Delta G is negative, and if it is positive the response is not random. At equilibrium, the values of \Delta G, \Delta H, \ and \ \Delta S are 0.

6 0
3 years ago
What does the prefix non-represent?
storchak [24]

Answer:

1.) 9 carbon atoms, only

Explanation:

Prefix: non- simply means 9.

Suffix: -ene means double bond, -yne means triple bond, and -ane means single bonded carbons.

7 0
3 years ago
Read 2 more answers
When 8.70 kJ of thermal energy is added to 2.50 mol of liquid methanol, it vaporizes. Determine the heat of vaporization in kJ/m
Anni [7]

Answer:

The heat of vaporisation of methanol is "3.48 KJ/Mol"

Explanation:

The amount of heat energy required to convert or transform  1 gram of liquid to vapour is called heat of vaporisation

When 8.7 KJ of heat energy is required to vaporize 2.5 mol of liquid methanol.

Hence, for 1 mol of liquid methanol, amount of heat energy required to evaporate the methanol is =   \frac{8.7}{2.5}KJ

 = 3.48 KJ

So, the heat of vaporization \delta H_{vap} = 3.48KJ/Mol

Therefore, the heat of vaporization of methanol is 3.48KJ/Mol

5 0
3 years ago
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