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Allushta [10]
4 years ago
7

A barium hydroxide solution is prepared by dissolving 1.68 g of Ba ( OH ) 2 in water to make 45.6 mL of solution. What is the co

ncentration of the solution in units of molarity
Chemistry
1 answer:
Jobisdone [24]4 years ago
7 0

Answer:

[Ba(OH)₂] = 0.21 M

Explanation:

Molarity is a sort of concentration for solute that determines the moles of solute contained in 1 L of solution (mol/L).

Solution's volume = 45.6 mL

We convert the volume from mL to L → 45.6 mL . 1 L/1000 mL = 0.0456L

Our solute: Ba(OH)₂

We convert the mass of solute to moles → 1.68 g / 171.33 g/mol =

0.00980 moles

Molarity → mol/L → 0.0980 moles / 0.0456L = 0.21 M

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Programs that award certificate that u can help in securing jobs are called​
leonid [27]

vocational or technical education programs.

Explanation:

A vocational or technical education program is one that awards certificate that can help in securing jobs.

In a vocational or technical program, one is studying for a specific job role. It involves and hands on practical processes within a short period of time possible that makes one viable for some roles.

Examples are IT technician, Welders, Carpentry etc

learn more:

Job hazards brainly.com/question/3193019

#learnwithBrainly

7 0
4 years ago
Which of the following atoms forms an ionic bond with a sulfur atom? (Points : 3)
elena-s [515]
Ionic bonds are formed when there is complete transfer of valence electrons between two atoms.

Electronegativity tells the trend of an atom to atract electrons.

You should search for the complete set of rules that indicate whether an ionic or covalent bond happens.

There are two relevant rules to state if whether an ionic bond will happen:

- When the difference of electronegativities between the two atoms is greater than 2.0, then the bond is ionic.

- When the difference is between 1.6 and 2.0, the bond is ionic if one of the elements is a metal.

You need to list the electronegativities of the five elements (there are tables with this information)

Element  electronegativity

Cu:    1.9
H:      2.2
Cl      3.16
I:        2.66
S:      2.58

Differences:

Cu / S: 2.58 - 1.9 = 0.68
H / S: 2.58 - 2.2 = 0.38
Cl / S: 3.16 - 2.58 =0.58
I / S: 2.66 -  2.58 = 0.08

 Those differences are too low to consider that the bond is ionic.

Then the answer is that none of those atoms forms an ionic bond with sulfur.
8 0
3 years ago
Read 2 more answers
A convex lens is _____. (A)thicker in the middle than on the edges (B)varying in thickness from edges to middle (C)thicker on th
Fittoniya [83]
I think you answer is C
4 0
3 years ago
Determine the type of each chemical equation describing a precipitation reaction. C a 2 + ( a q ) + S O 4 2 − ( a q ) ⟶ C a S O
Zepler [3.9K]

Answer:

C a B r 2 ( a q ) + N a 2 S O 4 ( a q ) ⟶ 2 N a B r ( a q ) + C a S O 4 ( s )

Explanation:

A precipitation reaction is a type of displacement reaction which a precipitate forms. The precipitate would be in the solid state, different from the other products so it can be separated or removed from the reaction.

C a 2 + ( a q ) + S O 4 2 − ( a q ) ⟶ C a S O 4 ( s )

This is wrong because  C a S O 4  is the the only product formed.

C a B r 2 ( a q ) + N a 2 S O 4 ( a q ) ⟶ 2 N a B r ( a q ) + C a S O 4 ( s )

This is the correct option, The precipitate is C a S O 4.

C a 2 + ( a q ) + 2 B r − ( a q ) + 2 N a + ( a q ) + S O 4 2 − ( a q ) ⟶ 2 N a + ( a q ) + 2 B r − ( a q ) + C a S O 4 ( s )

This is the ionic equation for the precipitation reaction

8 0
3 years ago
What is a creative title for dry ice boo bubbles project?
DerKrebs [107]
BBdrice!! LOLOLOL i think its weird but creative
7 0
4 years ago
Read 2 more answers
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