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Lilit [14]
2 years ago
5

Sugar turns into black mass on heating Give reasonneed fast​

Chemistry
2 answers:
Kipish [7]2 years ago
7 0

The heat causes the sugar's atoms to combine with the oxygen in the air, forming new groups of atoms. Energy is released in this chemical reaction in the form of smoke and black soot.         hope this helps

nevsk [136]2 years ago
7 0

Sugar is made of carbon, hydrogen, and oxygen atoms. When heated over a candle, these elements react with the fire to turn into a liquid. The heat causes the sugar's atoms to combine with the oxygen in the air, forming new groups of atoms. Energy is released in this chemical reaction in the form of smoke and black soot.

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Volatility and vapor pressure are ________. Volatility and vapor pressure are ________. not related directly proportional to one
alina1380 [7]

Answer:

directly proportional to one another

Explanation:

Volatility refers to how quickly a substance changes from liquid to gas.

If a substance has a high vapour pressure, the substance is highly volatile. Similarly, if a substance has a low vapour pressure, then the substance is much less volatile.

This implies that volatility and vapour pressure gives a direct proportionality.

3 0
3 years ago
Who discovered copper and in what year?
Vesnalui [34]
8,700 B.C.
 No clue who discovered it.
4 0
3 years ago
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using information in titles of appendices b and c, calculate the minimum grams of propane, C3H8 (g), that must be combusted to p
Lubov Fominskaja [6]

<u>Given:</u>

Mass of ice = mass of water = 5.50 kg = 5500 g

Temperature of ice = -20 C

Temperature of water = 75 C

<u>To determine:</u>

Mass of propane required

<u>Explanation:</u>

Heat required to change from ice to water under the specified conditions is:-

q = q(-20 C to 0 C) + q(fusion) + q (0 C to 75 C)

  = m*c(ice)*ΔT(ice) + m*ΔHfusion + m*c(water)*ΔT(water)

  = 5500[2.10(0-(-20)) + 334 + 4.18(75-0)] = 3792 kJ

The enthalpy change for the combustion of propane is -2220 kJ/mol

Therefore, the number of moles of propane corresponding to the required energy of 3792 kJ = 1 mole * 3792 kJ/2220 kJ = 1.708 moles of propane

Molar mass of propane = 44 g/mol

Mass of propane required = 1.708 moles * 44 g/mol = 75.15 g

Ans: 75.15 grams of propane must be combusted.



4 0
4 years ago
Four states or phases of matter
Pie

Answer:

Solid, Liquid, Gas and, Plasma

Explanation:

A solid has a definite shape and volume. A liquid has a definite volume but takes the shape of its container. A gas lacks either a defined shape or volume. Plasma is similar to a gas in that its particles are very far apart, but gas is electrically neutral and plasma has a charge.

5 0
3 years ago
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GIVING BRAINLIEST HURRY
PIT_PIT [208]
Answer: A
Explanation it gets all mushy THATS a physical change
4 0
3 years ago
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