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g100num [7]
3 years ago
10

The air in a balloon is heated up. Give two effects this has on the air particles.

Chemistry
1 answer:
Lisa [10]3 years ago
4 0
Density and mass increases
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What kind of chemical reaction does the chemical equation sodium + chlorine → sodium chloride represent?
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Newton's third law states that for every action, there is an ______ and ____ reaction force and that forces come in ____
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3 0
2 years ago
A coffee-cup calorimeter initially contains 125 g water at 24.28C. Potassium bromide (10.5 g), also at 24.28C, is added to the w
iren2701 [21]

Answer:

The solution is given below

Explanation:

Heat, q= mc∆T

q= 125g x 4.18 J/g∙°C x (21.18x- 24.28) °C

q=  -1619.75J

NEGATIVE SIGN INDICATES THAT HEAT IS ABSORBED.

Enthalpy Change, ∆H = 1619.75 7/ 10.5 g

                                     = 154.26 J/g

No. of moles of KBr = Mass of KBr/ Molecular Weight of KBr

                                =10.5g/119gmol-1

                                =0.088 mol

∆H= 1619.75 J/ 0.088 mol

      = 18.41 kJ/mol  

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