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Licemer1 [7]
3 years ago
6

Help plz:))) I’ll mark u brainliest

Chemistry
2 answers:
tatuchka [14]3 years ago
8 0
The correct answer is

B.The elements all have three valence electrons
algol133 years ago
6 0
I’m pretty certain it’s B
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How would the calculated concentration of the hci be affected if the sodium hydroxide were poured from ma beaker that contained
Mekhanik [1.2K]

Answer:

This question is incomplete

Explanation:

This question is incomplete. However, the beaker that contained some water before NaOH were added means that the resulting solution in that beaker will be more dilute. When this diluted sodium hydroxide solution is added to HCl (not hci), the reaction below occurs

HCl + NaOH ⇒ NaCl + H₂O

The reaction above is a neutralization reaction. <u>The concentration of the acid (HCl) will reduce when a base (sodium hydroxide) is added and will also reduce more because of the presence of more water (in the base) which normally reduces the concentration of ions present in an acid or a base to become more dilute.</u>

5 0
3 years ago
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pishuonlain [190]

Answer:

remain the same

Explanation:

The pH of the buffer system remain the same when 0.030 moles of strong acid are added because buffer system has the property to resist any change in the pH  when acid or base is added to the solution. In buffer system, one molecule is responsible for neutralizing the pH of the solution by giving H+ or OH-.This molecule is known as buffer agent. If more base is added, the molecule provide H+ and when more acid is added to the solution, then the molecule add OH- to the solution.

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3 years ago
Develop a hypothesis to explain why bubbles exhaled by scuba divers underwater expand as they float up to the surface of the oce
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Answer:The bubbles exhaled by a scuba diver grow as they approach the surface of the ocean. The pressure exerted by the weight of the water decreases with depth, so the volume of the bubbles increases as they rise.

Explanation:

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2 years ago
Which units describe the molarity of an aqueous sucrose solution? moles of sucrose per liter of solution grams of solution per l
r-ruslan [8.4K]
Molarity is one way of expressing concentration of solutions. It has units of moles of solute per liter of the solution. Take note, this is not only for sucrose solution, this is used for every solution. The correct answer from the choices is "moles of sucrose per liter of solution ".
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3 years ago
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3 0
2 years ago
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