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Alborosie
3 years ago
14

Draw the structures of the starting materials needed to make 2-methylhept-3-yne in the spaces provided. The starting materials m

ay be any bromoalkane having five carbons or fewer.

Chemistry
1 answer:
DIA [1.3K]3 years ago
4 0

Answer: answered

Explanation:

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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
I need help with these 4
storchak [24]

Rift Valley Examples

  • East African
  • Rhine Rift Valley (Germany)
  • Baikal Rift Valley (Russia)

Rift Valley Facts/Characteristics

  • Bordered by fault zones and separating land masses
  • A portion of land that drops, forming a valley.
  • Formed as tectonic plates move.

Fossils - Examples

  • Bones
  • Shells
  • Exoskeletons
  • Stone imprints of animals.

Non Examples of Fossils

  • Stones
  • rocks
  • Some bones (If they are fossils they will be a lot heavier than other bones.

Hope this helps.

5 0
3 years ago
13,000. cm has how many significant figures?
Svet_ta [14]

Answer:

since there is a decimal point at the end, they are all significant figures so the answer is 5

5 0
3 years ago
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Which of these features is usually found where mountains exist next to the ocean?
Doss [256]

Fjords are usually found where mountains exist next to the ocean.

So the correct answer is C.

Hope this helps,

Davinia.

8 0
3 years ago
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What is the name of the compound K3N?
alexdok [17]
The name of the compound K3N is potassium nitride (C).
8 0
3 years ago
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