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Jobisdone [24]
3 years ago
15

How does a best fit line take into account errors in reading and recording data from the experiment?

Chemistry
2 answers:
Dafna11 [192]3 years ago
8 0
Remember every time you take a measurement, the last digit recorded represents a guess.
marin [14]3 years ago
7 0

Answer:

Answer below!

Explanation: Mean -- add all of the values and divide by the total number of data points.

Error -- subtract the theoretical value (usually the number the professor has as the target value) from your experimental data point.

Percent error -- take the absolute value of the error divided by the theoretical value, then multiply by 100

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_____ is the process of linking smaller molecules to form long chains of higher molecular weight.
Leya [2.2K]
What is “Polymerization” is your answer
7 0
3 years ago
A gas occupies 14.3 liters at a pressure of 45.0 mm Hg. What is the volume when the pressure is increased to
Simora [160]

Answer:

P1V1= P2V2

Explanation:

Inverse relationship

V2 = V1 X P1/P2

V2= 14.3 L x 45.0 mm Hg/63.0 mmHg= 8.99

8 0
3 years ago
What’s the lowest point of a wave called
ioda

it is called the trough.

6 0
3 years ago
Read 2 more answers
A sample contains 16 mg of polonium-218. After 12 minutes, the sample will contain 1.0 mg of polonium-218. What is the half life
mariarad [96]

Answer:

Half-life = 3 minutes

Explanation:

Using the radioactive decay equation we can solve for reaction constant, k. And by using:

K = ln2 / Half-life

We can find half-life of polonium-218

Radioactive decay:

Ln[A] = -kt + ln [A]₀

Where:

[A] could be taken as mass of polonium after t time: 1.0mg

k is Reaction constant, our incognite

t are 12 min

[A]₀ initial amount of polonium-218: 16mg

Ln[A] = -kt + ln [A]₀

Ln[1.0mg] = -k*12min + ln [16mg]

-2.7726 = - k*12min

k = 0.231min⁻¹

Half-life = ln 2 / 0.231min⁻¹

<h3>Half-life = 3 minutes</h3>

5 0
3 years ago
Determine the number of moles of water assicated with the salt.
Nookie1986 [14]

Answer:

Divide the mass of your anhydrous (heated) salt sample by the molar mass of the anhydrous compound to get the number of moles of compound present. In our example, 16 grams / 160 grams per mole = 0.1 moles. Divide the mass of water lost when you heated the salt by the molar mass of water, roughly 18 grams per mole.In order to determine the formula of the hydrate, [Anhydrous Solid⋅xH2O], the number of moles of water per mole of anhydrous solid (x) will be calculated by dividing the number of moles of water by the number of moles of the anhydrous solid (Equation 2.12. 6).

6 0
2 years ago
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