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Ilia_Sergeevich [38]
2 years ago
14

Since a element has a pH number of 7, meaning it is ______. That element can be classified as neither a ____ or a _____.

Chemistry
2 answers:
Nana76 [90]2 years ago
6 0
- - Since a element has a pH number of 7, meaning it is neutral. That element can be classified as neither a acid or a base.
- - No this is not balanced.
- - This is because its no balanced considering the o has 6 sides and 4 has one.
- - Because of this it is not true based on the com (conversion of mass) This law was made by Antoine Lavoisier and using his law I was able to know that it was not a balanced equation. 


Lilit [14]2 years ago
4 0
If a number has a pH of 7, it is neutral, therefore, one blank is neutral. 

1. Neutral

Therefore, the element is not an acid or a base.

2. Acid, Base

That is NOT a balanced equation because:

c=4    o=2
c=4     o = 6

Not balanced, o has 6 and one side it has 4. It contradicts the Law of conversation of mass. 
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3 years ago
if you mixed 72.9g hydrochloric acid(aq) with 150g silver acetate(aq), what would be the limiting reagent?​
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                      Silver Acetate would be the Limiting Reagent.

Explanation:

                    The balance chemical equation for the given double displacement reaction is as;

                            HCl + AgC₂H₃O₂ → AgCl + HC₂H₃O₂

Step 1: <u>Calculate Moles of Starting Materials:</u>

Moles of HCl:

                      Moles  =  Mass / M.Mass

                      Moles  =  72.9 g / 36.46

                      Moles =  1.99 moles

Moles of AgC₂H₃O₂:

                      Moles  =  150 g / 166.91 g/mol

                      Moles  =  0.898 moles

Step 2: <u>Find out Limiting reagent as:</u>

According to balance chemical equation.

              1 mole of HCl reacts with  =  1 mole of AgC₂H₃O₂

So,

         1.99 moles of HCl will react with  =  X moles of AgC₂H₃O₂

Solving for X,

                     X =  1.99 mol × 1 mol / 1 mol

                     X =  1.99 mol of AgC₂H₃O₂

Hence, to completely consume 1.99 moles of Hydrochloric acid we will require 1.99 moles of Silver Acetate, But, we are provided with only 0.898 moles of Silver Acetate. This means Silver Acetate will consume first in the reaction therefore, it is the LIMITING REAGENT.

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