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3 years ago

Some people rinse their freshly shampooed hair in diluted lemon juice or vinegar. Why is this done?

Chemistry

2 answers:

zzz [600]3 years ago

8 0

Answer:

the citric acid in lemon juice is a natural bleach, or oxidizing agent. It whitens hair by chemically reducing your hair's color pigment, or melanin. When exposed to the sun, the citric acid accelerates the bleaching process

Yakvenalex [24]3 years ago

5 0

Answer:

Hey there!

Some people rinse their freshly shampooed hair in diluted lemon juice to prevent dandruff, which can cause an itchy head.

Let me know if this helps :)

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Credible sources always identify the author. Please select the best answer from the choices provided T F

Lostsunrise [7]

This is a true statement because the author can then be further looked into and researched

5 0

3 years ago

Read 2 more answers

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MaRussiya [10]

Calcium reacts gently with water to give hydrogen and calcium hydroxide, which is only slightly soluble, thus slows down the reaction.

It will be assumed that hydrochloric acid used is a dilute aqueous solution.

However, calcium reacts with hydrochloric acid to give calcium chloride which is readily soluble in water, and hydrogen, being a typical reaction of relatively active metals with acids.
Ca(s) + 2HCl(aq) -> CaCl2(aq) +H2(g) ↑ + heat

The clues that it is a chemical reaction could be:
- formation of a new substance, gaseous hydrogen
- disappearance of a metallic solid in the solution
- heat formed during the vigorous reaction.

As silver is below hydrogen in the electrochemical series, it will not be expected to react with dilute hydrocloric acid. (however, it dissolves in oxidizing acid such as nitric acid, but not displacing hydrogen as a product).

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3 years ago

The answer to the problem: 3.6 x 4.639 + 5.831 = _____, written to the correct number of significant digits is:

natka813 [3]

Answer:

3.6 x 4.639 + 5.831 = 2000

Explanation:

In this problem, we need to find the value of 3.6 x 4.639 + 5.831.

Here, 3.6 has 2, 4.639 and 5.831 has 4 significant figures.

We can use BODMAS RULE to find it as follows :

3.6 x 4.639 + 5.831 = (3.6 x 4.639) + 5.831

= 2325.96 + 5.831

in significant gigure,

= 2300 + 5.831

= 2305.831

In one significant figure,

= 2000

Hence, the answer of the problem is 2000.

4 0

2 years ago

Which feature of a balanced chemical equation demonstrates the law of conservation of mass?

stealth61 [152]

Answer:

A balanced equation demonstrates the conservation of mass by having the same number of each type of atom on both sides of the arrow.

7 0

1 year ago

Complete and balance the equations for the following double displacement reactions:

RideAnS [48]

Answer:

A. AgNO₃ + NaCl —> AgCl + NaNO₃

B. Mg(NO₃)₂ + 2KOH —> 2KNO₃ + Mg(OH)₂

C. 3LiOH + Fe(NO₃)₃ —> Fe(OH)₃ + 3LiNO₃

Explanation:

The equation given in the question above can be balanced as follow.

A. AgNO₃ + NaCl —> AgCl + NaNO₃

The above equation is already balanced.

B. Mg(NO₃)₂ + KOH —> KNO₃ + Mg(OH)₂

There are 2 atoms of H on the right side and 1 atom on the left side. It can be balance by writing 2 before KOH as shown below:

Mg(NO₃)₂ + 2KOH —> KNO₃ + Mg(OH)₂

There are 2 atoms of K on the left side and 1 atom on the right side. It can be balance by writing 2 before KNO₃ as shown below:

Mg(NO₃)₂ + 2KOH —> 2KNO₃ + Mg(OH)₂

Thus, the equation is balanced.

C. LiOH + Fe(NO₃)₃ —> Fe(OH)₃ + LiNO₃

There are 3 atoms of H on the right side and 1 atom on the left side. It can be balance by writing 3 before LiOH as shown below:

3LiOH + Fe(NO₃)₃ —> Fe(OH)₃ + LiNO₃

There are 3 atoms of Li on the left side and 1 atom on the right side. It can be balance by writing 3 before LiNO₃ as shown below:

3LiOH + Fe(NO₃)₃ —> Fe(OH)₃ + 3LiNO₃

Thus, the equation is balanced.

5 0

2 years ago

Some people rinse their freshly shampooed hair in diluted lemon juice or vinegar. Why is this done?​

Some people rinse their freshly shampooed hair in diluted lemon juice or vinegar. Why is this done?