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Nezavi [6.7K]
1 year ago
9

before we begin, let's first establish an understanding of basic terminology. it may be harder than you think to clearly define

what is a chemical versus a chemical reaction. to help us better differentiate between closely related terms, review the words listed here. sort each of the words into the three categories: contains chemicals, chemical reaction, or neither.
Chemistry
1 answer:
Dennis_Churaev [7]1 year ago
8 0

Contains chemical : vitamin  b12, oranges, grapes, protein

chemical reaction is : neutralization, combustion, bleaching, photosyntheis

Neither : sunlight, rainbow, heat.

  • chemical is a substance
  • Chemical reaction is a rocess during which chemical bonds between atoms are broken and new ones are formed. Producing one or more different substances.
  • reactant is a starting materials in a chemical reaction
  • product is new substances that are formed in a chemical reaction
  • chemical equation is representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products.
  • combustion reaction is a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light

To know more about Chemical reaction     visit : brainly.com/question/3461108

#SPJ4

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What is the luster of aluminum
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Answer:

Luster of aluminum is Silver-White.

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3 years ago
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3 years ago
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Which element is a liquid at STP?<br> (1) bromine (3) francium<br> (2) cesium (4) iodine
ollegr [7]
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3 years ago
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What is the PH of a 1.3×(10)^-9 M HBr solution?
olga nikolaevna [1]

pH solution = 8.89

<h3>Further explanation</h3>

Given

The concentration of HBr solution = 1.3 x 10⁻⁹ M

Required

the pH

Solution

HBr = strong acid

General formula for strong acid :

[H⁺]= a . M

a = amount of H⁺

M = molarity of solution

HBr⇒H⁺ + Br⁻⇒ amount of H⁺ = 1 so a=1

Input the value :

[H⁺] = 1 x  1.3 x 10⁻⁹

[H⁺] = 1.3 x 10⁻⁹

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pH = 9 - log 1.3

pH = 8.89

7 0
2 years ago
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