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Reptile [31]
4 years ago
8

Number 16 Number 17 Number 18 Number 19

Chemistry
1 answer:
Scilla [17]4 years ago
3 0

Answer:

16 is (1)

17 is (4)

18 is (3)

19 is (2)

Explanation: 16 is right because the barium always loses 2 electrons

17 is right because Ge is gold

18 is right because As has 72.922 larger than Ge 72.64

19 is right because 2 is a noble gas an 13 is post-transition metal an 14 is a metalloid

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What is the molarity of a hydrochloric acid solution, when 30.0 mL is neutralized by 48.0 mL of 0.100 mol/L
bulgar [2K]

The molarity of a hydrochloric acid solution : 0.32 M

<h3>Further explanation  </h3>

Titration is a procedure for determining the concentration of a solution by reacting with another solution which is known to be concentrated (usually a standard solution).

Titrations can be distinguished including acid-base titration, depositional titration, and redox titration. An acid-base titration is the principle of neutralization of acids and bases is used.  

Acid-base titration formula  

Ma. Va. na = Mb. Vb. nb  

Ma, Mb = acid base concentration  

Va, Vb = acid base volume  

na, nb = acid base valence  

1 ⇒HCl (valence=1, HCl ⇒H⁺+Cl⁻, one H⁺)

2⇒Ca(OH)₂(valence=2, Ca(OH)₂⇒Ca²⁺+2OH⁻, two OH⁻)

M₂=0.1 M

V₂=48 ml=0.048 L

V₁=30 ml=0.03 L

\tt M_1.V_1.n_1=M_2.V_2.n_2\\\\M_1\times 0.03\times 1=0.1\times 0.048\times 2\\\\M_1=0.32

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<h3>What is a mixture? </h3>

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brainly.com/question/10677519

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