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2 years ago

Is there only one way to conduct a scientific experiment? Explain why or why not.

Chemistry

2 answers:

katovenus [111]2 years ago

8 0

Answer:

Explanation:

because to conduct an experiment you would have to go through the process more than once to compare them to find the best soulution or get the best results

marshall27 [118]2 years ago

3 0

In short, there is no “one way” to conduct an experiment.

There are multiple types of experiments, one of the few things that they have in common is that they all provide the scientist with data. For a specific experiment, or question, the most reliable answer is one that has been tested multiple times. Meaning that a test needs to be conducted more than 2 times to be completely finished.

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3 years ago

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What is the definition of a chemical bond?

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2 years ago

Find the pH. What are the pH values for the following solutions? (a) 0.1 M HCl (b) 0.1 M NaOH (c) 0.05 M HCl (d) 0.05 M NaOH

slega [8]

Answer:

(a) $pH=1$

(b) $pH=1.3$

(d) $pH=12.7$

Explanation:

Hello,

In this case, we define the pH in terms of the concentration of hydronium ions as:

$pH=-log([H^+])$

Which is directly computed for the strong hydrochloric acid (consider a complete dissociation which means the concentration of hydronium equals the concentration of acid) in (a) and (c) as shown below:

(a)

$[H^+]=[HCl]=0.1M$

$pH=-log(0.1)=1$

(b)

$[H^+]=[HCl]=0.05M$

$pH=-log(0.05)=1.3$

Nevertheless, for the strong sodium hydroxide, we don't directly compute the pH but the pOH since the concentration of base equals the concentration hydroxyl in the solution:

$[OH^-]=[NaOH]$

$pOH=-log([OH^-])$

$pH=14-pOH$

Thus, we have:

(b)

$pOH=-log(0.1)=1\\pH=14-1=13$

(d)

$pOH=-log(0.05)=1.3\\pH=14-1.3=12.7$

Best regards.

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3 years ago