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Semmy [17]
3 years ago
12

100 POINTS PLS HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry
2 answers:
klemol [59]3 years ago
5 0

Last one and the first

dimulka [17.4K]3 years ago
3 0

Answer:

i need this im struggling with my work

Explanation:

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Concerning the 10.0 mL of 0.50 M NaCl to 100 mL of solution: When a solution is diluted, does it change the number of moles diss
Mars2501 [29]

No, the dilution does not change the number of moles dissolved

Explanation:

We can see that,

The molarity of the solution was 0.50 M

The volume of the solution is 10 ml.

No of moles of the solute was= volume * concentration

                                                   = 10 X 10^-3* 0.50

                                                     = 5*10^-3 moles

When the solution is diluted from 10 ml to 100ml, the molarity or concentration  changes but number of moles remains constant.

The molarity of 100 ml solution will be

c=n/V

  = 5*10^-3*/100*10^-3

  = 0.05

  when the solution is diluted to 100ml from 10 ml molarity changes from 0.5M TO 0.05 M

8 0
3 years ago
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Hlo good evening everyone​
goblinko [34]

Answer:

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Explanation:

4 0
3 years ago
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9. Determine the number of protons, neutrons, and electrons in one 'H' ion. Explain how you found your
Katyanochek1 [597]

Answer:

'H' ion has only one proton and do not have any electron and neutron.

Explanation:

Hydrogen atom has only one electron and one proton and when it loses that electron, hydrogen ion (H+) is formed which is positively charged (charge of +1) and referred as a proton.

So, hydrogen ion do not left with any electrons or have zero electrons.

Hydrogen (H) atom do not have any neutrons in its tiny nucleus, so hydrogen ion (H+) also do not have neutrons.

Hence, 'H' ion (H+) has only proton and zero electron and neutron.

4 0
3 years ago
I would really appreciate help with this
Annette [7]

homogeneous: a substance maintaining a uniform appearance throughout.

miscible: the ability of two liquids to be mixed together.

immiscible: two liquids that will not mix with one another.

heterogeneous: a mixture consisting of visibly different substances or phases.

I hope you find this helpful.

8 0
3 years ago
Josh is completing an experiment and his thermometer measures temperature in Kelvin. He finds the boiling point of water to be
Vilka [71]
The boiling point would be measured as C) 373 Kelvin
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3 years ago
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