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PolarNik [594]
4 years ago
15

Classify each of the following properties of a cake as qualitative or quantitative. Give reasons for your answers

Chemistry
1 answer:
VashaNatasha [74]4 years ago
4 0

Answer:

The answer to your question is below

Explanation:

A qualitative property of matter is a property characteristic of a substance like color and flavor.

A quantitative property of matter is a property when we get a number.

A) it's a circular shape  is a qualitative property because the shape is a qualitative property and shape is not represented by a number.

B) its mass is 1.5 kg  is a quantitative property because we know a number of this mass.

C) it tastes like chocolate  is a qualitative property because the flavor is characteristic of a substance and flavor is not measured in numbers.

D) it is 30 cm in diameter  it is a quantitative property, we know the exact dimension of it.

E) its icing is melting is a qualitative property, melting is a property of ice, it just happens.

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Water (2850 g ) is heated until it just begins to boil. If the water absorbs 5.53×105 j of heat in the process, what was the ini
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Answer is 54 °C.

<em>Explanation;</em>

We can simply use heat equation

Q = mcΔT  

 Where Q is the amount of energy transferred (J), m is the mass of the substance (kg), c is the specific heat (J g⁻¹ °C⁻¹) and ΔT is the temperature difference (°C).

Let's assume that the initial temperature is T.

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c = 4.186 J/g °C

ΔT = (100 - T)  °C     <em>Since the water is boiling, the final temperature is 100 °C.</em>

By applying the equation,

5.53 × 10⁵ J  = 2850 g  x 4.186 J/g °C  x (100 - T)  °C

(100 - T)  °C = 5.53 × 10⁵ J  / (2850 g  x 4.186 J/g °C  )

(100 - T)  °C = 46.35 °C

         T        = 100 - 46.35 C = 53.65 °C

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If my memory serves me well, the correct answer is: Chemical processes store and release <span>C: energy</span><span> in the bonds of molecules.

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