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3 years ago

The periodic table is organized by

Chemistry

1 answer:

Lostsunrise [7]3 years ago

7 0

Answer:

Atomic Number.

Explanation:

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The radio station z107.7 broadcasts radio waves. What do the numbers 107.7 represent?

PilotLPTM [1.2K]

Hello

It represents the certain radio station that you are currently using and it is the smae number of radio waves

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3 years ago

Given a solution with a hydroxide ion concentration, oh=3.73×10^-5,what is the ph

Stells [14]

Answer:

pH = 9.73

Explanation:

pOH is the negative logarithm of the molar concentration of hydroxide ions and pH is the negative logarithm of the concentration of hydronium ions.

The mathematical expression to determine pOH is:

$pOH=-\log [OH^-]$

Where [OH⁻] means the molar concentration of hydroxide ions.

Substituting:

$pOH=-\log {(3.73\times 10^{-5})$

$pOH=4.43$

pH and pOH are related by the equation:

$pH+pOH=14$

From which:

$pH=14-pOH\\\\pH=14 - 4.43\\\\pH=9.57\leftarrow answer$

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3 years ago

How many significant figures are in this number? 107.051

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Answer:

there are 6 significant figures in 107.051

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Why phosphorus forms 3 bonds in molecule such as PH3 and PCl3-

gregori [183]

Phosphorous has three lone electrons that need pairing. Similar to how carbon has 4 lone electrons, and forms CH4

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