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RSB [31]
3 years ago
14

A nuclide of Superscript 64 subscript 29 upper C u. absorbs a positron. Which is the resulting atom? Superscript 65 subscript 29

upper C u. Superscript 63 subscript 29 upper C u. Superscript 64 subscript 28 upper N i. Superscript 64 subscript 30 upper Z n.
Chemistry
1 answer:
vichka [17]3 years ago
6 0

Answer:

option) D

Explanation:

i just took the test

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What is the [OH-] of a substance that has a pH of 11?
Deffense [45]

Answer:

0.001 M OH-

Explanation:

[OH-] = 10^-pOH, so

pOH + pH = 14 and 14 - pH = pOH

14 - 11 = 3

[OH⁻] = 10⁻³ ; [OH-] = 0.001 M OH-

6 0
3 years ago
consider a different titrant for this exercise. suppose ca(oh)2 were used as the titrant, instead of naoh. this will make the ti
Ivan

The titrant for this exercise. suppose Ca(OH)₂ were used as the titrant, instead of NaOH. This will make the titrant twice as concentrated in hydroxide ion. the analyte will still be HC₂H₃O₂. the stoichiometry ratio of  HC₂H₃O₂ to Ca(OH)₂ is 1 : 2.

The balanced reaction of the given condition as follow :

 Ca(OH)₂   +      2HC₂H₃O₂      ------>     Ca(C₂H₃O₂)₂     +    2H₂O

from the equation it is clear that stoichiometry of Ca(OH)₂ is 1 and the stoichiometry of HC₂H₃O₂    is 2. therefore the stoichiometry ratio of  HC₂H₃O₂ to Ca(OH)₂ is 1 : 2.

Thus, The titrant for this exercise. suppose Ca(OH)₂ were used as the titrant, instead of NaOH. This will make the titrant twice as concentrated in hydroxide ion. the analyte will still be HC₂H₃O₂. the stoichiometry ratio of  HC₂H₃O₂ to Ca(OH)₂ is 1 : 2.

To learn more about stoichiometry here

brainly.com/question/13145466

#SPJ4

4 0
2 years ago
True or false: Halogens are very stable because they have a full outer shell of 8
STALIN [3.7K]

Answer:

True

Explanation:

Halogens are very stable because they have a full outer shell of 8

true or false?

Brainiest plz and hope this answer helped let me know if you need any more help I am glad to help!

It's true!

8 0
3 years ago
Disadvantages of biodegradable plastics
natita [175]

1) The main disadvantage of bio plastics is that when they break down , carbondioxide is released and results into global warming.

2) They are designed to be composted , not recycled.

3) fewer proper composting availability.

4) plants grown for bioplastics have negative impacts of their own.

4 0
4 years ago
How would using a wider cuvette affect absorbance?
IgorC [24]
The width of the cuvette is important in the spectrophotometric analysis since wider cuvette<span> translates to more absorbing species present in the path where light passes, hence more absorbance is read in the analysis. other factors include the concentration of the sample and the species itself present.</span>
8 0
3 years ago
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