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vaieri [72.5K]
3 years ago
13

I don’t understand this question someone please help

Chemistry
1 answer:
egoroff_w [7]3 years ago
3 0
The answer is 49.97.
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(a) The rate of the reaction in terms of the "disappearance of reactant" includes the change in the concentration of the
Vaselesa [24]

Answer:

The average rate of the reaction in terms of disappearance of A is 0.0004 M/s.

Explanation:

Average rate of the reaction is defined as ratio of change in concentration of reactant with respect to given interval of time.

R_{avg}=-\frac{[A]_2-[A]_1}{t_2-t_1}

Where :

A_1 = initial concentration of reactant at t_1.

A_2 = Final concentration of reactant at t_2.

2A+3B → 3C+2D

R_{avg}=-\frac{1}{2}\frac{[A]_2-[A]_1}{t_2-t_1}

The concentration of A at (t_1=0 seconds ) = A_1=0.0400 M

The concentration of A at (t_2=20 seconds ) = A_2=0.0240 M

The average rate of reaction in terms of the disappearance of reactant A in an interval of 0 seconds to 20 seconds is :

R_{avg}=-\frac{1}{2}\times \frac{0.0240 M-0.0400 M}{20-0}=0.0004 M/s

The average rate of the reaction in terms of disappearance of A is 0.0004 M/s.

6 0
3 years ago
What ions are formed when naoh is dissolved in water?.
valentina_108 [34]

Answer:

When sodium hydroxide (NaOH) dissolves in water, it separates into positively - charged sodium ions (cations) and negatively - charged hydroxide ions (anions).

Hope this helped.

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2 years ago
The average atomic mass recorded on the periodic table for cobalt is 58.933 u. This indicates that the most abundant isotope of
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The average atomic mass of the element is the sum of the products of the percentage abundance of isotope and its mass number. Therefore, for atomic mass equal to 58.933, the most abundant isotope is cobalt-59. Thus, the answer is letter C. 
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What mass of barium carbonate can be produced when 100.0 mL of a 0.100 M solution of barium chloride is mixed with 100.0 mL of a
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100M solution so did new wells alanna annan carbonated
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3 years ago
What do you think a force diagram might look like for a hit that causes a concussion? Draw a diagram. Consider only the person’s
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Answer: I have the same test message me

Explanation: it won’t let me share my answers

6 0
3 years ago
Read 2 more answers
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