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GalinKa [24]
3 years ago
10

What is the pOH value when the solutions hydroxide concentration is 1.0 x 10−6 M?

Chemistry
1 answer:
ikadub [295]3 years ago
5 0

Answer:

I think is B -8

Explanation:

I don't know but I think so

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When 7.085 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 21.71 grams of CO2 and 10.37 grams of H
Taya2010 [7]

Answer:

- Empirical:

C_3H_7

- Molecular:

C_6H_{14}

Explanation:

Hello,

In this case, based on the information regarding the combustion, the moles of carbon turn out:

n_C=21.71gCO_2*\frac{1molCO_2}{44gCO_2}*\frac{1molC}{1molCO_2}=0.493molC

Moreover, the moles of hydrogen:

n_H=10.37gH_2O*\frac{1molH_2O}{18gH_2O}*\frac{2molH}{1molH_2O}=1.152molH

Thus, the subscripts of carbon and hydrogen in the hydrocarbon turn out:

C=\frac{0.4934}{0.4934}=1\\H=\frac{1.15222}{0.4934}=2.335\\CH_{2.335}

Now, looking for a suitable whole number we obtain the following empirical formula as 2.335 times 3 is 7 for hydrogen:

C_3H_7

In such a way, that compound has a molar mass of 43 g/mol, thus, the whole compound's molar mass is 86.18 g/mol for which the molecular formula is twice the empirical one, therefore:

C_6H_{14}

Which is hexane.

Best regards.

6 0
4 years ago
Use the drop-down menu to complete the sentence.
Paha777 [63]

Answer:

It's called carbon dioxide.

Explanation:

CO_{2} consists of 1 carbon atom bonding with two oxygen atoms.

5 0
3 years ago
Read 2 more answers
How do I do this? What do I do what are the steps I have no idea
Vesna [10]
B should be 20 because only 1 oxygen goes into water
C is hydrogen because 2 hydrogens go into each water
Can't read anything beyond c
7 0
3 years ago
Read 2 more answers
What is the molarity of a solution prepared by dissolving.
ser-zykov [4K]

Answer:

The molarity (M) of a solution is the number of moles of solute dissolved in one liter of solution. To calculate the molarity of a solution, you divide the moles of solute by the volume of the solution expressed in liters.

6 0
2 years ago
One mole of ANY element contains the:
NeTakaya
Not sure, just setting up account
8 0
4 years ago
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