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UkoKoshka [18]
3 years ago
10

Is burning of maganisums exothermic or endothermic reaction​

Chemistry
1 answer:
Kaylis [27]3 years ago
6 0

Answer:

Exothermic I think

Explanation:

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tigry1 [53]
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3 years ago
The freezing-point depression of a 0.100 m MgSO4 solution is 0.225°C. Determine the experimental van't Hoff factor of MgSO4 at t
Andrews [41]

<u>Answer:</u> The experimental van't Hoff factor is 1.21

<u>Explanation:</u>

The expression for the depression in freezing point is given as:

\Delta T_f=iK_f\times m

where,

i = van't Hoff factor = ?

\Delta T_f = depression in freezing point  = 0.225°C

K_f = Cryoscopic constant  = 1.86°C/m

m = molality of the solution = 0.100 m

Putting values in above equation, we get:

0.225^oC=i\times 1.86^oC/m\times 0.100m\\\\i=\frac{0.225}{1.86\times 0.100}=1.21

Hence, the experimental van't Hoff factor is 1.21

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3 years ago
Which best describes thermal energy? It is the difference between internal energies of two or more substances. It is the sum of
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Answer:

It is the portion of internal energy that can be transferred from one substance to another.

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3 years ago
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What do the elements within a "period" have in common? (pick one)
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