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topjm [15]
3 years ago
10

PLEASE HELP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
Galina-37 [17]3 years ago
6 0

Answer:

Explanation:

Potential energy

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Answer:

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Human saliva has a pH of about 6.50. Which term BEST describes this solution?
zaharov [31]
6.5 is slightly acidic - so the answer is B.
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3 0
4 years ago
Which statement best describes the formation of a solution?
aev [14]

Answer:

A small amount of solute dissolved in a larger amount of solvent.

Take this analogy to help you understand, if you were to put a teaspoon of sugar in a liter of water it would dissolve, but if you put a sack of sugar in it it would not dissolve! The solute is what is being dissolved and the solvent is what dissolves the solute, so that eliminates some of the options.

6 0
3 years ago
Write a method that could be used to produce pure crystals of copper chloride from copper oxide and hydrochloric acid.
joja [24]

- Describe how you would make the salt from the reactants.

CuO + 2 HCl → CuCl₂ + H₂O

- Describe how you would purify the salt from the reaction mixture.

Filter the solution and let the product crystallize.

Explanation:

The reaction between copper oxide (CuO) and hydrochloric acid (HCl) will produce copper chloride (CuCl₂) and water:

CuO + 2 HCl → CuCl₂ + H₂O

-Describe how you would make the salt from the reactants

In a beaker which contain cooper oxide add the hydrochloric acid. To avoid working with concentrated hydrochloric acid, the acid may be diluted with water but make sure the add the stoechiometric amount (and a little bit of excess) in respect with the copper oxide.

-Describe how you would purify the salt from the reaction mixture.

Let the reaction proceed and then filter the solution to remove the unreacted cooper oxide.

Let the filtered solution, which contain copper chloride, water and unreacted hydrochloric acid, to stand undisturbed for several days. You may see the crystals growing from the solution. To speed up the process you may reduce the temperature.

Learn more about:

purifying compounds

brainly.com/question/5586971

brainly.com/question/4757187

#learnwithBrainly

3 0
4 years ago
Name the parts of a chemical reaction, and describe both
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The parts of a chemical reaction are the reactants and products. The reactants are on the left side of the chemical equation and they are what’s gonna go through a chemical reaction and change properties. The products are the result of the chemical reaction
5 0
3 years ago
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