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Elena-2011 [213]
3 years ago
8

A 10-mL pipette delivers 9.99,10.01,9.97, and 10.8 mL in an experiment. Calculate the mean value and the average deviation from

the mean.
Chemistry
1 answer:
Harman [31]3 years ago
5 0
To find the mean of a number of numbers, First you add them up.
9.99 + 10.01 + 9.97 + 10.8 = 40.77
Then, you divide the result by how much numbers you have (in this case 4)
40.77 / 4 = 10.1925

So, the mean value is 10.1925.

The deviation is the difference between the number and the mean.
(number - mean = Average deviation)

So you get:
9.99 - mean = 9.99 - 10.1925 = -0.2025
10.01 - 10.1925 = -0.1825
9.97 - 10.1925 = -0.2225
10.8 - 10.1925 = 0.6075


Now to find the Average deviation, you do the same steps as finding the mean. Add them up, and divide by 4 (because there is 4 numbers)
P.S. Negative numbers become positive.

0.2025 + 0.1825 + 0.2225 +0.6075 = 1.215

1.215 / 4 = 0.30375

So, the Average Deviation is 0.30375

Hope this Helps :)
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Hello!

At Standard Pressure and Temperature, an ideal gas has a molar density of  0,04464 mol/L.

So, we need to apply a simple conversion factor to calculate the density of Sulfur Dioxide using the molar mass of Sulfur Dioxide.

\frac{0,04464 mol SO_2}{1 L SO_2}* \frac{64,066 g SO_2}{1 mol SO_2}=2,8599 g/L

So, the Density of Sulfur Dioxide (SO₂) at STP is 2,8599 g/L

Have a nice day!


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2 years ago
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What is the relationship between events and patterns?
MAXImum [283]
Events that happen over and over create/become a pattern
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3 years ago
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What does the constant bombardment of gas molecules against the inside walls of a container produce?
alukav5142 [94]
<span>The constant bombardment of gas molecules against the inside walls of a container produces Pressure.

Explanation:
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                                        P  =  F  /  A

In case of gases, the gas molecules have high Kinetic Energy and they move with high velocity. This cause them to strike against the inside wall of the container. Pressure is directly proportional to temperature. Increase in temperature cause to increase the Kinetic Energy of molecules, Hence, the rate of collisions increases resulting in increasing the pressure.</span>
4 0
3 years ago
How long would it take for 1.50 mol of water at 100.0 âc to be converted completely into steam if heat were added at a constant
defon
To convert boiling water to steam, that would involve heat of vaporization. The heat of vaporization for water at atmospheric conditions is: ΔHvap = <span>2260 J/g.

Molar mass of water = 18 g/mol

Q = m</span>ΔHvap = (1.50 mol water)(18 g/mol)(<span>2260 J/g) = 61,020 J

Time = Q/Rate = (61,020 J)(1 s/20 J) = 3051 seconds

In order to express the answer in three significant units, let's convert that to minutes.
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6 0
2 years ago
Point E is located at (-2, 2) and point F is located at (4-6). What is the distance between
Flauer [41]

Answer:

10

Explanation:

Given endpoints:

            E (-2,2) and F(4, -6)

To find the distance between two points;

   Use the expression below;

 D = \sqrt{(y_{2} - y_{1}  )^{2} + (x_{2} -  x_{1})^{2}  }

x₁  = -2,

x₂ = 4

y₁ = 2

y₂ = -6

  Insert the parameters and solve;

       D = \sqrt{(-6 - 2  )^{2} + (4 -+ 2)^{2}  }

      D = \sqrt{64+ 36 }   = 10

5 0
3 years ago
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