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Mumz [18]
3 years ago
7

Two students are given different samples of a substance and are instructed to determine the properties of the substance. Which s

tatement describes a property that will be the same for both students?
-color because it is an extensive property
-mass because it is an extensive property
-boiling point because it is an intensive property
-volume because it is an intensive property
Chemistry
2 answers:
olga_2 [115]3 years ago
8 0
Mass because it is an extensive property
Art [367]3 years ago
5 0

Answer : The correct option, mass because it is an extensive property.

Explanation :

Extensive property : It is a type of property that depends on the amount of the substance. For example : mass and volume.

Intensive property : It is a type of property that don not depends on the amount of the substance. For example : density, boiling point, pressure and color.

Hence, from the given statements the correct statement is, the mass because it is an extensive property.

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A chocolate bar weighs 4.00 ounces. If the chocolate delivers 2.78 calories per gram, how many
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Answer:

40.79

Explanation:

an ounce is equal to approximately 28.3 grams.

if you have 4 ounces then it would be equal to about 113.4 grams. then you would divide that by 2.78 which will equal about 40.8

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Help please !!!!!!!!
Elena L [17]

Answer:

Option B. 2096.1 K

Explanation:

Data obtained from the question include the following:

Enthalpy (H) = +1287 kJmol¯¹ = +1287000 Jmol¯¹

Entropy (S) = +614 JK¯¹mol¯¹

Temperature (T) =.?

Entropy is related to enthalphy and temperature by the following equation:

Change in entropy (ΔS) = change in enthalphy (ΔH) / Temperature (T)

ΔS = ΔH / T

With the above formula, we can obtain the temperature at which the reaction will be feasible as follow:

ΔS = ΔH / T

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Cross multiply

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Divide both side by 614

T = 1287000/614

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