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IRISSAK [1]
3 years ago
10

The process of a liquid converting to a solid is called

Chemistry
1 answer:
VashaNatasha [74]3 years ago
3 0
It is called freezing.
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3 years ago
Solve the following question
Andrew [12]

Answer:

140. J/g*K

Explanation:

To find the specific heat capacity, you need to use the following equation:

Q = mcΔT

In this equation,

-----> Q = energy/heat (J)

-----> m = mass (g)

-----> c = specific heat (J/mole*K)

-----> ΔT = change in temperature (K)

Before you can use the equation above, you need to (1) convert kg to grams, then (2) convert grams to moles (via molar mass), and then (3) convert Celsius to Kelvin. The final answer should have 3 significant figures.

1.11 kg C₄H₈O₂ x 1,000 = 1110 g

Molar Mass (C₄H₈O₂): 4(12.01 g/mol) + 8(1.008 g/mol) + 2(16.00 g/mol)

Molar Mass (C₄H₈O₂): 88.104 g/mol

1110 grams C₄H₈O₂                1 mole
------------------------------  x  -------------------------  =  12.6 moles C₄H₈O₂
                                           88.104 grams

34.5 °C + 273 = 307.5 K

52.3 °C + 273 = 325.3 K

Q = mcΔT                                                                   <----- Equation

3.14 x 10⁴ J = (12.6 moles)c(325.3 K - 307.5 K)         <----- Insert values

3.14 x 10⁴ J = (12.6 moles)c(17.8)                                <----- Subtract

3.14 x 10⁴ J = (224.28)c                                 <----- Multiply 12.6 and 17.8

140. = c                                                         <----- Divide both sides by 224.28

**this answer may be slightly off due to using different molar masses/Kelvin conversions**

4 0
1 year ago
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