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pantera1 [17]
3 years ago
11

Sort the phrases pertaining to pure substances and mixtures as either true or false.

Chemistry
1 answer:
Lynna [10]3 years ago
5 0
You have to note that pure substances can be elements or compounds. There is only one component all throughout. On the other hand, a mixture is a combination of different elements and compounds. They can appear in different phases. For example, air is a mixture. It is composed of pure substances of oxygen, carbon dioxide, and nitrogen.
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Answer: the pH is 11.78

Explanation:Please see attachment for explanation

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Which of the following best explains what happens when the kinetic energy of particles in a liquid state increases?
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They move fast enough to overcome the forces of attraction that hold them together, becoming a gas.

ITS THAT :)

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2 years ago
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. A reaction in which A, B, and C react to form products is first order in A, second order in B, and zero order in C. a) Write a
AleksAgata [21]

Answer:

a) r = k × [A] × [B]²

b) 3

Explanation:

Let's consider the following generic reaction

A + B + C ⇒ Products

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r = k × [A]ᵃ × [B]ᵇ × [C]ⁿ

where

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  • k: rate constant
  • a, b, n: reaction orders

This reaction is first order in A, second order in B, and zero order in C. The rate law is:

r = k × [A]¹ × [B]² × [C]⁰

r = k × [A] × [B]²

The overall order of the reaction is the sum of the individual reaction orders.

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4 0
3 years ago
If an atom with a mass number of 27 has 14 neutrons,it is an isotope of which element​
kkurt [141]

Answer:

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Explanation:

   

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After that you must select a number of students, give them their homework and ask each student to complete a percentage of that amount. An example of this could be that you select 11 students and ask the first to complete 0% of the homework, the second student must complete 10%, the third 20% and so on, and the 11th student must complete 100% of the homework.

after that, note what was the final grade that each student received in the course and make a graph to show the results.

The y-axis of the graph must represent the dependent variable, while the x-axis must represent the independent variable. This way you will show the exact relationship between completing homework and the final grade of the course.

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