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WARRIOR [948]
3 years ago
9

- What is the concentration of hydrogen ions if the pH is 12?

Chemistry
1 answer:
ELEN [110]3 years ago
4 0

Answer:

1 x 10^-12 mol dm^-3

Explanation:

[H+] = 10 ^ -pH

Therefore, pH 12 = 1 x 10^-12 hydrogen ion concentration

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Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). If you mix butane and oxygen in the correct
Fittoniya [83]

Answer:

118.776 mmHg

Explanation:

The equation of the reaction is;

C4H10(g) + 13/2 O2(g) ------> 4CO2(g) + 5H20(g)

Now the mole ratio  according to the balanced reaction equation is;

1 : 6.5 : 4 : 5

Hence, the total number of moles present = 1 + 6.5 + 4 + 5 = 16.5 moles

Mole fraction of water vapour = 5/16.5 = 0.303

We also know that;

Partial pressure= mole fraction * total pressure

Partial pressure of H20(g) = 0.303 *  392 mmHg = 118.776 mmHg

7 0
3 years ago
Emerald-green crystals of the substance are used in nickel plating. what is the chemical name of this compound
nlexa [21]

The answer is nickel sulfate hexahydrate.

The chemical name of the substance is nickel sulfate hexahydrate.

Emerald-green crystals of the substance are used in nickel plating. The chemical name of this compound nickel sulfate hexahydrate.

This substance is used in nickel panting and it is having chemical name that is nickel sulfate hexahydrate.

3 0
3 years ago
What volume would 8.01×1022 molecules of an ideal gas occupy at STP?
Nataly_w [17]

Explanation:

8.01 \times  {10}^{22}  \times  \frac{1}{6.02 \times  {10}^{23} }  \times  \frac{22.4}{1}  = 2.9804

5 0
3 years ago
What is a anemometer
spin [16.1K]

Answer: it measures temperature

Explanation:

3 0
3 years ago
An old antacid commercial claimed that each tablet of their product could neutralize 47 times its mass in stomach acid. The acti
butalik [34]

Answer : The number of moles of HCl neutralize is, 0.00824 moles.

Explanation :

The given balanced chemical reaction is:

NaAl(OH)_2CO_3+4HCl\rightarrow NaCl+AlCl_3+3H_2O+CO_2

First we have to calculate the moles of NaAl(OH)_2CO_3

\text{Moles of }NaAl(OH)_2CO_3=\frac{\text{Mass of }NaAl(OH)_2CO_3}{\text{Molar mass of }NaAl(OH)_2CO_3}

Molar mass of NaAl(OH)_2CO_3 = 144 g/mol

\text{Moles of }NaAl(OH)_2CO_3=\frac{0.296g}{144g/mol}=0.00206mol

Now we have to calculate the moles of HCl.

From the balanced chemical reaction we conclude that,

As, 1 mole of NaAl(OH)_2CO_3 react with 4 moles of HCl

So, 0.00206 mole of NaAl(OH)_2CO_3 react with 0.00206\times 4=0.00824 moles of HCl

Thus, the number of moles of HCl neutralize is, 0.00824 moles.

8 0
3 years ago
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