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dlinn [17]
3 years ago
12

Classify each one of the following as pure substances or mixtures:

Chemistry
2 answers:
xxMikexx [17]3 years ago
7 0
Compounds=1,2,712
elements=2,3,8,11,13,17,20,24,26
heterogeneous mixtures=I think that none of them are heterogenous mixtures

homogeneous mixtures=all the remaining numbers
vova2212 [387]3 years ago
6 0
Please refer to the attachment for a complete classification of your specified matter.
Download docx
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Determine the specific heat ofmaterial if a 12g sample absorbed 48j as it was heated from 20-40
devlian [24]

Answer:

c =0.2 J/g.°C

Explanation:

Given data:

Specific heat of material = ?

Mass of sample = 12 g

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Initial temperature = 20°C

Final temperature = 40°C

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

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ΔT =  20°C

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48 J =240 g.°C×c

c = 48 J/240 g.°C

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5.70×10^-11 m

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