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rusak2 [61]
4 years ago
15

A substance that increases the concentration of hydroxide ions in aqueous solution.

Chemistry
1 answer:
stepladder [879]4 years ago
5 0
The answer that complete the sentence is "Arrhenius base".

The complete sentence is: A substance that increases the concentration of hydroxide ions in aqueous solution is an Arrhenius base.

Arrhenius' acid and base model says that an acid is a substance that contains hydrogen and ionizes in aqueous solution producing protons (H+) and a base is a substance that cointains hydroxide and release it in aqueous solution.
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Type the correct answer in the box. Express your answer to two significant figures.
mash [69]

Answer: The percent yield of zinc carbonate is 5.91 %

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}

 \text{Moles of} ZnCO_3=\frac{12.6 g}{125.4g/mol}=0.100moles

ZnI_2 is the limiting reagent as it limits the formation of product and Na_2CO_3 is the excess reagent.  

Na_2CO_3+ZnI_2\rightarrow 2NaI+ZnCO_3  

According to stoichiometry :

1 mole of produce =  1 mole of

Thus 1.7 moles of ZnI_2 will produce=\frac{1}{1}\times 1.7=1.7moles  of ZnCO_3

Theoretical yield of ZnCO_3=moles\times {\text {Molar mass}}=1.7moles\times 125.4g/mol=213.2g

percentage yield = \frac{\text {Experimental yield}}{\text {Theoretical yield}}\times 100=\frac{12.6g}{213.2g}\times 100=5.91\%

6 0
3 years ago
Read 2 more answers
What is potential energy
PolarNik [594]

Answer:

the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.

Explanation:

hope this helps you

4 0
3 years ago
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Which of the following is a valid mole ratio from the balanced equation 2Fe2O3+3C yield 4Fe+3CO2
riadik2000 [5.3K]

Answer :

The balanced chemical reaction is,

2Fe_2O_3+3C\rightarrow 4Fe+3CO_2

From this balanced chemical reaction, we conclude that

2 moles of iron oxide react with the 3 moles of carbon to give 4 moles of iron and 3 moles of carbon dioxide.

Therefore, the valid mole ratio from the balanced chemical reaction is,

Fe_2O_3:C:Fe:CO_2=2:3:4:3

5 0
3 years ago
What test would be done to prove the color of specific compounds is due to metal ions apart from flame test
bulgar [2K]

Answer:

Borax bead test

Explanation:

Another test that can be used to identify colored ions in a specific compound such as salt is called "Borax bead test".

This test involves use of a clear glassy bead of borax that is joined together in a wire loop which is going to be involved in chemical reaction with the salts of certain metals.

This reaction will produce colors that we can use to identify the exact metal ions that are present.

8 0
3 years ago
Why is it important to remember APE
mamaluj [8]

Answer:

whta is a APE

Explanation:

4 0
3 years ago
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