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Korolek [52]
3 years ago
13

Which pair of symbols represents a metalloid and a noble gas?

Chemistry
1 answer:
kupik [55]3 years ago
5 0
I didn't understand your question at first, I believe an acceptable answer would be As and Ar.

As (arsenic) is a metalloid and Ar (argon) is a noble gas.

Hopefully I was able to help you! :)
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A NaOH(aq) solution with a pH value of 13 is used to determine the molarity of a HCl(aq) solution. A 10.0-mL sample of the HCl(a
erica [24]

Answer:

pH of the H⁺(aq) is 0

Explanation:

It is possible to know the  concentration of a HCl(aq) solution by titration with a solution of NaOH(aq) with known concentration. The reaction is:

HCl(aq) +  NaOH(aq) → H₂O(l) + NaCl(aq)

The added moles of NaOH are equal to moles of HCl and as you know volume of HCl added you will obtain concentration of HCl.

Now, a solution of H⁺(aq) with a concentration 10 times greater than original NaOH(aq) solution -0.100M-, has a concentration of 1.00M H⁺(aq), the pH of this solution is:

pH = -log (1.00M H⁺(aq) = 0

That means <em>pH of the H⁺(aq) is 0</em>

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3 years ago
1. Why does CH30 evaporate faster than water?
Iteru [2.4K]

Answer:

Becuase CH30 has weaker inter-molecular forces

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Becuase its intermolecular forces are weaker the particals will seperate more easilyl.

8 0
2 years ago
A block of aluminum occupies a volume of 15.0 mL and weighs 45 grams.
vladimir2022 [97]
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3 years ago
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iogann1982 [59]

2. is point source

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8 0
2 years ago
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rjkz [21]

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