What is the length of one mole of the typical cell phone that is approximately 15 cm in length?

Chemistry

2 answers:

Solnce55 [7]3 years ago

7 0

Answer:

Some objects of more than 15 cm and less than 30 cm can be:

A rule.

A cell phone.

A pencil.

A calculator.

A laptop charger.

We have to measure it helps us to compare and to obtain physical magnitudes of different objects.

Measurement is the action of obtaining a representative magnitude of a particular object, now, to measure we need to compare and have reference points.

See more at brainly.lat/tarea/3935004.

Explanation:'

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Salsk061 [2.6K]3 years ago

4 0

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What are the hydronium and hydroxide ion concentrations in a solution whose ph is 6.52?

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A solution with a pH of 6.52 has a hydronium ion concentration of 3.02x10-7 mol/L and a hydroxide ion concentration of 3.31x10-8 mol/L.

The hydronium ion concentration of a solution can be calculated from pH by using $10^{-pH}$ . For a pH of 6.52, hydronium ion concentration is 3.02x10-7 mol/L.

The concentration of hydroxide ions can be determined by identifying the value of pOH. The sum of pOH and pH is equal to 14, which is based on the negative logarithm of the ion-product constant of water. At a pH of 6.52, pOH is equal to 7.48.

The relationship between pOH and hydroxide ion concentration is the same as the relationship between pH and hydronium ion concentration. With this, the hydroxide ion concentration at pOH of 7.48 is $10^{-7.48}$ or 3.31x10-8 mol/L.