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Svetlanka [38]
3 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]3 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]3 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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What is the mole fraction of sodium chloride in solution that is 13. 0 y mass sodium chloride and that has a density of 1. 10 g/
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Mole fraction is the ratio of the constituent moles to the total constituents. The mole fraction of sodium chloride is 0.0443.

<h3>What is a mole fraction?</h3>

A mole fraction is the proportion of the moles of the component in a total component present.

In 100 gm of solution 13.0 5 means, there is 13.0 gm of sodium chloride present. The mass of water is calculated as,

100 - 13.0 = 87.0 gm

Moles of sodium chloride is calculated as:

\begin{aligned} \rm moles &= \rm \dfrac{mass}{molar\; mass} \\\\&= \dfrac{13}{58}\\\\&= 0.224 \;\rm moles\end{aligned}

Moles of water are calculated as:

\begin{aligned} \rm moles &= \rm \dfrac{mass}{molar\; mass} \\\\&= \dfrac{87}{18}\\\\&= 4.83\;\rm moles\end{aligned}

Now, moles fraction is calculated by dividing moles of sodium chloride by total moles as,

\begin{aligned} \text{Mole fraction of NaCl} &= \dfrac{0.224}{0.224 + 4.83}\\\\&= 0.0443\end{aligned}

Therefore, the mole fraction of sodium chloride is 0.0443.

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The ability of an atom to attract the shared electrons in a covalent bond is its
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Answer:

A) IV: number of hours DV: score

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In this case, we need to change the hours of studying to see how studying for different hours [1 hr, 2hr, etc (( Independant variable coz we're changing the no. of hours)) ] is going to affect the student's score, and in the end, we are measuring the score of each student [this is the dependant variable].

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