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77julia77 [94]
4 years ago
13

If the [H3O+] of a solution is 1x 10-8 mol/L the [OH-] is

Chemistry
1 answer:
Studentka2010 [4]4 years ago
6 0

Answer:

<em>(H30+)= 1x10^-6 M</em>

Explanation:

Both pH and pOH have a relationship to belonging to the same aqueous solution: the expression of the Kwater (ionic product of the water Kw) is used:

1x 10-8 mol/L equals to1x10-8 M

(H3O+) x (OH-) = 1x10^-14

(H30+)x 1x 10^-8 =1x10^-14

(H30+)= 1x10^-14/1x 10^-8

<em>(H30+)= 1x10^-6 M</em>

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What is the percent composition of Ca(C2H3O2)2?
Fynjy0 [20]

Answer:

A

Explanation:

RMM of ca(c2h302)2=158

%Ca= 40/158×100=25.3

%C=48/158×100=30.3

%H=6/158×100=3.7

%O=64/158×100=40.5

6 0
3 years ago
Read 2 more answers
Select the correct answer.
frozen [14]

Answer:

1.79x10^-14

Explanation:

pOH + pH = 14

H+=10^-pH

- Hope that helps! Please let me know if you need further explanation.

3 0
3 years ago
A gas sample has an original volume of 760 ml when collected at 700 mm and 40oC. If a change is made in the gas temperature whic
alexandr1967 [171]

Answer:

235k

Explanation:

To solve this problem, we will use the general gas equation.

In its simplest form, the general gas equation can be represented as follows:

P1V1/T1 = P2V2/T2

P1 = 700mmHg

V1 = 760ml

T1 = 40 degrees Celsius = 40 + 273.15 = 313.15K ( conversion into standard temperature unit)

P2 = 1.25 atm

We have to covert this into the same unit as the first pressure.

760mmHg = 1atm

x mmHg = 1.25 atm

x = 1.25 * 760 = 950mmHg

V2 = 420ml

T2 = ?

Now, rearranging the equation will yield:

T2 = P2V2T1/P1V1

T2 = 950 * 420 * 313.5/700 * 760

T2 = 235.125K or -38.025 degrees celcius

6 0
3 years ago
An experiment is carried out where 13.9 g of solid NaOH is dissolved in 250.0 g of water in a coffee-cup calorimeter. Dissolutio
mario62 [17]

Answer:

263.9g

Explanation

Total mass of solution= mass of solute + mass of solvent = 13.9+250g =263.9g

Mass of surrounding= mass of calorimeter= 263.9g

8 0
4 years ago
Which is a pure substance?<br><br> - soda <br> - gasoline <br> - salt water <br> - carbon dioxide
KengaRu [80]
Carbon dioxide is the pure substance:)
3 0
3 years ago
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