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Anit [1.1K]
1 year ago
11

A 609 ml sample of naoh has a ph of 13.5292. if 594 ml of distilled water was added to the initial naoh solution, what would the

new ph of the solution be g
Chemistry
1 answer:
Delvig [45]1 year ago
8 0

The new pH of the solution after the addition of water would be 13.22.

<h3>Total volume of the solution</h3>

V(total) = 609 ml + 594 ml

V(total) = 1203 ml

<h3>Concentration of water </h3>

C = (594 ml)/(1203 ml)

C = 0.493

pOH = -log(0.493)

pOH = 0.31

New pH of the solution = 13.5292 - 0.31 = 13.22

Learn more about pH here: brainly.com/question/13557815

#SPJ1

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How does radiocarbon (or uranium) dating help us better understand the world
navik [9.2K]

Here we have to discuss the understanding of world through radiocarbon or uranium.

The radiocarbon or uranium helps us to determine the age of the world.

All uranium or radiocarbon elements after ejecting the radioactive rays convert to non-radioactive element lead (²⁰⁸Pb). If we assume that during the generation of world there were not any amount of lead was present i.e. only uranium or radiocarbon was present. Then by analysis of any uranium or radiocarbon at the present date one can determine the age of the world as follows:

In present moment we know that the ratio of uranium (U) and lead (Pb) in any uranium ore is 10:3 (gram atom ratio)

So, \frac{the amount of uranium at the generation of world}{The remaining amount of uranium on present day} = \frac{10+3}{10}

Therefore, from the equation: ln\frac{N_{0} }{N} = λt (where λ = rate of dissociation of uranium, t = time); we can write:

t = λ⁻¹ ln\frac{N_{0} }{N} =  λ⁻¹ln\frac{13}{10}.

On plugging the dissociation rate of uranium we can obtain the age of the world, which is nearly 1.5×10⁹ years.

Thus the use of radioactive element to understand the world is explained.

4 0
3 years ago
What was alchemy?
stira [4]

Answer:

D

Explanation:

its a very old study and philosophy of how to change basic substances such as metals into other substances

8 0
3 years ago
Read 2 more answers
Return the first n&gt;0 elements of list l. assume the list elements are numbered from 1 to n
Daniel [21]
I dont get it someone please help
4 0
3 years ago
Aspirin can be prepared from salicylic acid ( C 7 H 6 O 3 CX7HX6OX3), which has a molar mass of 138.12 g/mol, and acetic anhydri
pychu [463]

Answer: The theoretical yield of aspirin is 4.14 g

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}  \text{Moles of salicylic acid}=\frac{3.20g}{138.12g/mol}=0.023moles

mass of acetic anhydride = density\times volume =1.082g/ml\times 3.71ml=4.01g

\text{Moles of acetic anhydride}=\frac{4.01g}{102.04g/mol}=0.039moles

C_9H_6O_3+C_4H_6O_3\rightarrow C_9H_8O_4+C_2H_3O_2  

According to stoichiometry :

1 mole of salycylic acid require 1 mole of acetic anhydride

Thus 0.023 moles of  salycylic acid require=\frac{1}{1}\times 0.023=0.023moles  of acetic anhydride

Thus salycylic acid is the limiting reagent as it limits the formation of product and acetic anhydride is the excess reagent.

As 1 mole of salycylic give = 1 mole of aspirin

Thus 0.023 moles of salycylic acid give =\frac{1}{1}\times 0.023=0.023moles  of aspirin

Mass of aspirin = moles\times {\text {Molar mass}}=0.023moles\times 180.15g/mol=4.14g

Thus theoretical yield of aspirin is 4.14 g

4 0
3 years ago
Pressure of an ideal gas ___________________, when number of particles ( moles ) of gas decreases.
atroni [7]
The answer to your question is B.
3 0
3 years ago
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