3 years ago

The pH scale:

Chemistry

2 answers:

Svet_ta [14]3 years ago

7 0

Answer:

A) Ranges in value from 0.0 (Acids) to 14.0 (Bases).

Explanation:

Process of elimination.

faltersainse [42]3 years ago

5 0

It runs from 0 to 14. (A)

It is based off the -log [H+] where [H+] is the concentration of the Hydrogen ions.

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Consider the reaction 2CO * O2 —> 2 CO2 what is the percent yield of carbon dioxide (MW= 44g/mol) of the reaction of 10g of c

Arturiano [62]

Answer:

Y = 62.5%

Explanation:

Hello there!

In this case, for the given chemical reaction whereby carbon dioxide is produced in excess oxygen, it is firstly necessary to calculate the theoretical yield of the former throughout the reacted 10 grams of carbon monoxide:

$m_{CO_2}^{theoretical}=10gCO*\frac{1molCO}{28gCO}*\frac{2molCO_2}{2molCO} *\frac{44gCO_2}{1molCO_2}\\\\ m_{CO_2}^{theoretical}=16gCO_2$

Finally, given the actual yield of the CO2-product, we can calculate the percent yield as shown below:

$Y=\frac{10g}{16g} *100\%\\\\Y=62.5\%$

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