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zloy xaker [14]
3 years ago
12

If you repeat an experiment and the results are very different from the results you got the first time, the next step would be t

o
Select one:


a. trust the second results.

b. decide which results are better.

c. repeat the experiment again.

d. try a different experiment
Chemistry
2 answers:
Yuliya22 [10]3 years ago
5 0
Answer: option c. repeat the experiment again.

Because, the first approach is to assume that there was a mistake in one or both ot the two trials. Only if the results continue being different in several trials, you have to think in a design error and then modify the experiment.
shutvik [7]3 years ago
4 0
C , you need a definite answer , if you get a completely different results again , id say take the mean / average so you have some results
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3 years ago
How many moles are in 29.5 grams of Ax?
JulsSmile [24]

The number of moles present in 29.5 grams of argon is 0.74 mole.

The atomic mass of argon is given as;

Ar = 39.95 g/mole

The number of moles present in 29.5 grams of argon is calculated as follows;

39.95 g ------------------------------- 1 mole

29.5 g ------------------------------ ?

= \frac{29.5}{39.95} \\\\= 0.74 \ mole

Thus, the number of moles present in 29.5 grams of argon is 0.74 mole.

<em>"Your question seems to be missing the correct symbol for the element" </em>

Argon = Ar

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6 0
3 years ago
a book with a mass of 1 kg is dropped from a height of 3 m. what is the potential energy of the book when it reaches the floor?
mafiozo [28]
Well, first of all, the formula for finding potential energy is;
PE=mgh
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   Anyway, according to the question, the mass is 1kg, the acceleration due to gravity has a constant value of 10ms² . And the height is 3m. Now you just have to use all these in the formula. So;
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mestny [16]

Answer:

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Working in laboratories has many risks, therefore, preventive measures that should be incorporated to avoid the occurrence of any laboratory accidents.

Some of the important emergency equipment that should be available in laboratories are: hands-free eyewash stations, sand bucket, fire blankets, fire extinguishers, fire alarm system, chemical storage cabinet, first aid kits and fume hood.

Some of the personal protective equipment include lab coats, goggles, safety gloves and face shield.

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