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Svetlanka [38]
2 years ago
14

In any experiment the accuracy of the data and experiment can be improved. What are some things that can be done to improve data

and experiment accuracy?
Choose all that apply:

Conduct more trials.

Add more controls.

Add less controls.

Add more variables

Add less variables

Choose a different person to do the experiment.
Chemistry
2 answers:
NARA [144]2 years ago
5 0

Answer:

Conduct more trials.

Add less variables.

Choose a different person

Explanation:

More trials gives plenty of data to be examined.

Less variables makes for less confusion, and less things to keep track of.

Different person ensures that the experiment is not being done by one single person who could be messing up the data

SIZIF [17.4K]2 years ago
4 0

Answer:

conduct more trials, less variables, more controls

Explanation:

more trials make it so if something goes wrong you have other data, less variables because you should only test one variable at a time, more controls helps set your base line for the experiment

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The correct answer is c
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3 years ago
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Balance the following equation in acidic conditions. Phases are optional. Cu NO3,
Gwar [14]
If your equation is <span>Cu+NO^- 3-->Cu^2+NO, then the answer is 
</span><span>2 Cu + 1 NO3{-}  → 1 Cu^{2+} + 3 NO 
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To check if it is balance, this is the solution:
2- Cu- 2
3- N -3
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5 0
3 years ago
A sample of neon gas occupies a volume of 752ml at 25k. What volume will the gas occupy at 80k if the pressure remains constant
Anettt [7]

Answer:

The gas occupy 2406.4 mL at 80 K.

Explanation:

Given data:

Initial volume of gas = 752 mL

Initial temperature = 25 K

Final temperature = 80 K

Final volume = ?

Solution:

The given problem is solved by using charle's law.

V₁/T₁ = V₂/T₂

V₂ =  V₁. T₂ /T₁

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7 0
3 years ago
The balanced equation shows how sodium chloride reacts with silver nitrate to form sodium nitrate and silver chloride. NaCl + Ag
Verdich [7]
<span>NaCl First calculate the molar mass of NaCl and AgNO3 by looking up the atomic weights of each element used in either compound Sodium = 22.989769 Chlorine = 35.453 Silver = 107.8682 Nitrogen = 14.0067 Oxygen = 15.999 Now multiply the atomic weight of each element by the number of times that element is in each compound and sum the results For NaCl 22.989769 + 35.453 = 58.44277 For AgNO3 107.8682 + 14.0067 + 3 * 15.999 = 169.8719 Now calculate how many moles of each substance by dividing the total mass by the molar mass For NaCl 4.00 g / 58.44277 g/mol = 0.068443 mol For AgNO3 10.00 g / 169.8719 g/mol = 0.058868 Looking at the balanced equation for the reaction, there is a 1 to 1 ratio in molecules for the reaction. Since there is a smaller number of moles of AgNO3 than there is of NaCl, that means that there will be some NaCl unreacted, so the excess reactant is NaCl</span>
8 0
3 years ago
Enter your answer in the provided box. Find the pH of a buffer that consists of 0.34 M HBrO and 0.89 M KBrO (PK, of HBrO = 8.64)
11111nata11111 [884]

Answer : The  pH of buffer is 9.06.

Explanation : Given,

pK_a=8.64

Concentration of HBrO = 0.34 M

Concentration of KBrO = 0.89 M

Now we have to calculate the pH of buffer.

Using Henderson Hesselbach equation :

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Now put all the given values in this expression, we get:

pH=8.64+\log (\frac{0.89}{0.34})

pH=9.06

Therefore, the pH of buffer is 9.06.

6 0
3 years ago
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