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SashulF [63]
3 years ago
13

What medium can your voice travel through?

Chemistry
2 answers:
77julia77 [94]3 years ago
8 0
Sound travels in solids and liquids too
Sound waves travel faster and more effectively in liquids than in air and travel even more effectively in solids.
Nookie1986 [14]3 years ago
3 0

Sound waves are most effective when traveling through solids. Less effective when in liquids and least effective in air.

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the ph of a naoh solution is 12.05. what is the concentration of [oh-] of the naoh solution? express your answer in standard not
Alborosie

Answer:

0.01 M

Explanation:

NaOH (sodium hydroxide) is a strong base, so it is completely dissociated into ions in aqueous solution:

NaOH ⇄ Na⁺ + OH⁻

So, we have OH⁻ ions in solution.

From the problem, we have the pH value. The pH is calculated as:

pH = -log [H⁺]

As NaOH is a base, we can also calculate the pOH:

pOH = -log [OH⁻]

Thus. we can use the relation between pH and pOH to calculate the pOH and then use it to calculate [OH⁻]:

pH + pOH = 14 ⇒ pOH = 14 - pH = 14 - 12.05 = 1.95

pOH = -log [OH⁻] ⇒ [OH⁻] = 10^{-pOH}= 10^{1.95}= 0.0112 M ≅ 0.01 M

3 0
3 years ago
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Why do scientists publish the results of their invesigation
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When scientists conduct an experiment and analyze the results, the next step is to write up a report that describes the experiment and the results and submit it for publication in a scientific or medical journal that is “peer reviewed.”

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3 years ago
What is the polarity of black pepper
leva [86]

Answer:

Polarity in chemistry referred to physical properties of compounds related to solubility, melting and boiling properties.

Polarity of black pepper can be seen when black pepper is sprinkled on water. The balck pepper float on water and get displaced if touched.

It means black pepper is non-polar and have no difference in electronegativity between bonded atoms. Black pepper is so light in weight and non-polar, the surface tension of water keep it floating in the water.

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Can anyone think of an analogy for a synthesis reaction?
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Directions: Convert the following word equations into formula equations then balance
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..............

......

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