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nalin [4]
3 years ago
5

Describe professions for chemists​

Chemistry
1 answer:
zepelin [54]3 years ago
8 0

Answer:

A chemist searches for new knowledge about chemicals and use it to improve the way we live. He or she may develop products such as synthetic fibers, drugs and cosmetics. Chemists create processes, including all refining and petrochemical processing, that reduce energy use and pollution.

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What is the product when magnesium reacts with sulfuric acid? mg(s) h2so4(aq) →what is the product when magnesium reacts with su
lions [1.4K]
The product is magnesium sulfate plus hydrogen gas,as per this equation:

<span>Mg + H2SO4 = MgSO4 + H<span>2(g)</span></span>

3 0
3 years ago
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Out of a box of 46 matches, 22 lit on the first strike. What percentage of the matches in the box did not light on the first str
ch4aika [34]

Answer: 52.17%

Explanation:

Number of matches in the box = 46

Number of matches that lit on the first strike = 22

Number of matches that did not light on the first strike = 46 - 22 = 24

Therefore, the percentage of the matches in the box did not light on the first strike will be:

= (Number of matches that did not light on the first strike / Number of matches in the box) × 100

= 24/46 × 100

= 52.17%

Therefore, the percentage of the matches in the box that did not light on the first strike is 52.17%.

7 0
3 years ago
Why is burning not a physical change?
Lerok [7]
I think it might be the last answer.... Or the second one. Yeah i think it’s the second one
4 0
3 years ago
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Balance the following skeleton reaction and identify the oxidizing and reducing agents: Include the states of all reactants and
N76 [4]

Answer:

Oxidizing agent - CrO4^2-

Reducing agent- N2O

Explanation:

Let us look at the equation closely;

CrO4^2- (aq) + 3N2O(g) ------------> Cr^3+ (aq) + 3NO(g) [acidic]

The reduction half equation is;

CrO4^2- (aq) + 3e -------->Cr^3+ (aq)

Oxidation half equation is;

3N2O(g) ------>3 NO(g) +3 e

Note that the oxidizing agent participates in the reduction half equation while the reducing agent participates in the oxidation half equation as seen above.

8 0
3 years ago
In the sun, hydrogen is converted to ____________________ through nuclear fusion.
lana66690 [7]

Answer:

Helium

In the sun, hydrogen is converted to __<u>Helium</u>__ through nuclear fusion.

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3 years ago
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