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photoshop1234 [79]
1 year ago
9

Ubstance Y has a heat of fusion of 3.5 KJ/g. How much

Chemistry
1 answer:
Dahasolnce [82]1 year ago
5 0

The amount of heat a 30-gram sample of substance Y absorbs to melt at its melting point is <u> 105 J.</u>

The enthalpy of fusion of a substance additionally referred to as heat of fusion is the alternate in its enthalpy resulting from imparting electricity, usually heat, to a specific amount of the substance to change its state from a stable to a liquid, at a steady strain.

The heat of fusion is the amount of heat vital to alternate 1 g of a stable to a liquid without a temperature exchange.

The heat of fusion is the strength wished for one gram of a solid to melt without any change in temperature. The heat of vaporization is the energy needed for one gram of a liquid to vaporize (boil) without a trade-in strain.

q = m·ΔHf

   = 30 × 3.5

heat  <u>= 105 J</u>

<u> </u>

Learn more about the heat of fusion here:-brainly.com/question/10403033

#SPJ1

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lilavasa [31]
It is false


Precipitation - What makes clouds, rain, snow, hail and sleet. When warm, wet air rises, it cools, and water vapor condenses out to form clouds. A cloud is made up of small drops of water or ice crystals, depending on its height and how cold is the surrounding air.
5 0
3 years ago
The density of a 20.3 m ch3oh (methanol) solution is 0.858 g/ml. what is the molality of this solution? h2o is the solvent.
aliina [53]

The difference of molarity and molality is in the units:

Molarity is expressed in mol solute / L solution;

<span> while Molality is expressed in mol solute / kg solvent</span>

Since no other data is given, let us assume that the contribution of methanol on the total volume is negligible. So that,

Molality = (20.3 mol / L) (1 L / 0.858 kg)

Molality = 23.66 m

<span>The closest answer is letter C. 23.7 m</span>

6 0
3 years ago
34.1 mg NaCl in 117.3 mL of solution
Solnce55 [7]

The molarity of the solution will be 4.97 M.

<h3>What is molarity?</h3>

It is the number of moles of solutes per 1 liter of solvent or solution.

Mole of 34.1 g NaCl = 34.1/58.44 = 0.5835 mol

117.3 mL = 117.3/1000 = 0.1173 L

Molarity of the solution = 0.5835/0.1173 = 4.97 M

More on molarity can be found here: brainly.com/question/2817451

#SPJ1

6 0
2 years ago
If a molecule contains polar bonds the molecule __ must be polar overall​
weeeeeb [17]

Answer:

diatomic

Explanation:

6 0
3 years ago
Conservation of mass and energy
olganol [36]

Answer:

Conservation of Energy and Mass The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed. For example, the carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to a gas but its mass does not change.

Explanation:

Hope it helps :)

pls mark brainliest :P

7 0
3 years ago
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