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dem82 [27]
3 years ago
11

2 The substance has a mass of 0.50 kg.

Chemistry
1 answer:
katen-ka-za [31]3 years ago
5 0

Answer:

68000J/kg

Explanation:

Given parameters:

 Mass of the substance  = 0.5kg

 Quantity of heat transferred to the body  = 34000J

 

Unknown:

Specific latent heat of fusion = ?

Solution:

The specific latent heat is usually involve in phase changes;

  H  = mL

H is the quantity of heat supplied

m is the mass

L is the specific latent heat

 Insert the parameters and solve;

     34000 = 0.5 x L

         L  = \frac{34000}{0.5}   = 68000J/kg

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7 0
4 years ago
What element has 1 energy level and 2 valence electrons
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3 0
3 years ago
The active ingredient in aspirin is acetylsalicylic acid. A 2.51-g sample of acetylsalicylic acid required 27.36 mL of 0.5106 M
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Hey there!

mass of sample = 2.51 g of Aspirin

Number of moles of base  ( NaOH ) :

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M*V = 13.68*0.516 = 7.05888 mmol of acid

pKa calculation:

pH = pKa + log(A-/HA)

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