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juin [17]
2 years ago
5

The heat of solution with calcium chloride is endothermic what will happen to the temperature of the container/flask when calciu

m chloride is added to water in the container/flask
Chemistry
2 answers:
tino4ka555 [31]2 years ago
6 0
Endothermic means it absorb energy from surrounding and its sign is positive so when it absorb this energy the flask or the container become colder 
Anna [14]2 years ago
6 0

Answer: the temperature of the container/flask will decrease.


Justification:


1) As stated in the question, the heat of the solution is endothermic.


Endothermic is a process (physical or chemical) in which energy is absorbed from the surroundings by the initial substances to end in the final state.


2) The fact of absorbing heat energy will translate in the decrease of temperature of the surroundings, in this case the container/flask.

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First we have to determine the total number of valence electron in N^{3-}.

Number of valence electrons in N = 5

The charge on N is (-3). So, we add 3 electrons.

Total number of valence electrons = 5 + 3 = 8 electrons

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A 150.0 mL sample of a 1.50 M solution of CuSO4 is mixed with a 150.0 mL sample of 3.00 M KOH in a coffee cup calorimeter. The t
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Mols CuSO4 = M x L = 1.50 x 0.150 = 0.225 
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3 years ago
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Which of the following is an example of qualitative
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Answer:

Option =C each mouse in the study has brown ears.

Explanation:

Qualitative:

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For example:

Color, odor, brittleness, taste etc.

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Quantitative properties can be measured in numerical values.

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3 years ago
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500 mL solution of calcium chloride with a concentration of 0.75 mol/L. The mass of solute needed to make this solution is ___ _
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Answer:

41.63g

Explanation:

Given parameters:

Volume of CaCl₂  = 500mL  = 0.5L

Concentration  = 0.75mol/L

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Mass of the solute needed = ?

Solution:

The mass of the solute can be derived using the expression below;

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But,

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2 years ago
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