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Svetlanka [38]
3 years ago
10

11

Chemistry
1 answer:
Ad libitum [116K]3 years ago
8 0

Explanation:

No because the person on the bike is going faster then the person on foot.

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A model that shows the many interconnected feeding relationships in an ecosystem is a food
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It's a food web. A food web connects the foods that certain organisms can eat.
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The reaction H2SO4 + 2 NaOH -> Na2SO4 + 2H2O applied to an acid-base tritration. The equivalence point occurs when 26.66 mL o
bazaltina [42]
We make use of ratios to solve this question.
            moles NaOH = c · V = 0.1923 mmol/mL · 26.66 mL = 5.126718 mmol
            moles H2SO4 = 5.126718 mmol NaOH · 1 mmol H2SO4 / 2 mmol NaOH = 2.563359 mmol
Hence
            [H2SO4]= n/V = 2.563359 mmol / 42.45 mL = 0.06039 M
The answer to this question is  [H2SO4] = 0.06039 M

8 0
3 years ago
As a chemical bond forms between two hydrogen atoms what is the potential energy of the atoms
Mice21 [21]

<h3><u>Answer;</u></h3>

-436 kJ/mol

<h3><u>Explanation;</u></h3>
  • When two hydrogen atoms approach each other the potential energy of the combination becomes lower and lower until it reaches a minimum value of -436 kl/mol at a distance of 75 pm.
  • A covalent bond forms when two or more valance electrons are attracted by the positively charged nuclei of two atoms and thus are shared between both atoms.
5 0
3 years ago
Carbon is one of a few elements that bonds to itself. The scientific term for this is
fiasKO [112]

Answer:

Alkanes

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6 0
3 years ago
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Part a a solution is made by mixing 9.00 mmol (millimoles) of ha and 3.00 mmol of the strong base. what is the resulting ph? exp
Debora [2.8K]

Assuming that the reaction is unimolecular on both reactant and product sides such that:

 

HA  +  OH-   -->  A-  +  H2O

 

Therefore the amount of A- left is:

mmol HA = 9.00 - 3.00 = 6.00 <span>
mmol A- = 3.00 

pKa = - log Ka = 5.25 

</span>

<span>Calculating for pH:
pH = 5.25 + log 3.00/6.00</span>

<span>pH = 4.95 </span>
7 0
3 years ago
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