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kati45 [8]
3 years ago
14

3. What was your average percent error for all three trials? In this experiment you did three trials. Why was it suggested that

you do three trials and not fewer?
Chemistry
2 answers:
sweet [91]3 years ago
7 0

Answer:

To be sure of the value you will obtain

Explanation:

Trial 1

Mass of calorimeter: 409g

Temp of calorimeter: 20Cº

Mass of calorimeter + water: 457g

Temp of calorimeter + water: 20Cº

Mass of calorimeter + water + ice: 510g

Temp of calorimeter + water + ice: –

Mass of calorimeter + ice: 450g

Temp of calorimeter + ice: 0Cº

Trial 2

Mass of calorimeter: 409g

Temp of calorimeter: 20Cº

Mass of calorimeter + water: 461g

Temp of calorimeter + water: 22Cº

Mass of calorimeter + water + ice: 515g

Temp of calorimeter + water + ice: –

Mass of calorimeter + ice: 447g

Temp of calorimeter + ice: 0Cº

Trial 3

Mass of calorimeter: 409g

Temp of calorimeter: 20Cº

Mass of calorimeter + water: 459g

Temp of calorimeter + water: 22Cº

Mass of calorimeter + water + ice: 513g

Temp of calorimeter + water + ice: –

Mass of calorimeter + ice: 448g

Temp of calorimeter + ice: 0Cº

stira [4]3 years ago
6 0

To be sure of the value you will obtain

Explanation:

Trial 1Mass of calorimeter: 409gTemp of calorimeter: 20CºMass of calorimeter + water: 457gTemp of calorimeter + water: 20CºMass of calorimeter + water + ice: 510gTemp of calorimeter + water + ice: –Mass of calorimeter + ice: 450gTemp of calorimeter + ice: 0Cº

Trial 2Mass of calorimeter: 409gTemp of calorimeter: 20CºMass of calorimeter + water: 461gTemp of calorimeter + water: 22CºMass of calorimeter + water + ice: 515gTemp of calorimeter + water + ice: –Mass of calorimeter + ice: 447gTemp of calorimeter + ice: 0Cº

Trial 3Mass of calorimeter: 409gTemp of calorimeter: 20CºMass of calorimeter + water: 459gTemp of calorimeter + water: 22CºMass of calorimeter + water + ice: 513gTemp of calorimeter + water + ice: –Mass of calorimeter + ice: 448gTemp of calorimeter + ice: 0Cº

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TiliK225 [7]

Answer:

Explained below

Explanation:

When we heat a liquid, what happens is that the molecules of the liquid will absorb heat and thus develop kinetic energy that will make them move faster.

Now, as the liquid begins to boil, bubbles of will be formed inside the liquid and then rises to the surface. Now, when the temperature of the reaches 100°C which is the boiling point of a liquid, the molecules at the top of the liquid begin to change to gaseous state and escape in form of vapour.

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Sebastian wants to write the chemical formula for phosphorus tetraoxide. He identifies the chemical symbols as P and O. Which ad
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Explanation:

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3 years ago
Analyze the role coefficients in a chemical reaction play in stoichiometry
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2 years ago
A 32.2 g iron rod, initially at 21.9 C, is submerged into an unknown mass of water at 63.5 C. in an insulated container. The fin
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c_2 = specific heat of water = 4.18J/g^oC

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m_2 = mass of water = ?

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T_2 = initial temperature of water = 63.5^oC

Now put all the given values in the above formula, we get

32.3g\times 0.45J/g^oC\times (59.2-21.9)^oC=-m_2\times 4.18J/g^oC\times (59.2-63.5)^oC

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The observed brightness of a star depends on which factors?
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Answer:

b..............

Explanation:

......

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