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amm1812
3 years ago
6

Use of chemical substance in our daily life their advantages and disadvantages​

Chemistry
1 answer:
vekshin13 years ago
3 0

Answer:

Explanation:

By observing chemical reactions, we are able to understand and explain how the natural world works. Chemical reactions turn food into fuel for your body, make fireworks explode, cause food to change when it is cooked, make soap remove grime, and much more.

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(BRAINLIEST)<br> compounds that are used to reduce acidity of soil
Crank

Answer:

Pulverized Limestone

Explanation:

Hope it helps!!

8 0
2 years ago
Read 2 more answers
Which characteristic do electronegativity differences indicate about reactions between atoms
emmasim [6.3K]
O valence electron number is the answer
6 0
3 years ago
A solution of salt and water is 33.0% salt by mass and has a density of 1.50 g/ml. what mass of the salt in grams is in 5.00l of
meriva
To answer this item, we solve first for the mass of the solution by multiplying the density by the volume. That is,

      m = (density)(volume)

Substituting the known values,
    m = (1.50 g/mL)(5L)(1000 mL/1L)
      m = 7500 grams

To determine the mass of the salt in the solution, multiply the calculated mass of the solution by the decimal equivalent of the percent salt in the solution.

      m of salt = (7500 g)(0.33)
      m of salt = 2475 grams

<em>Answer: 2475 grams</em>
6 0
3 years ago
Iron (III) oxide is formed when Iron combines with oxygen in the air. How many grams of Fe₂O₃ are formed when 16.7 grams of reac
sladkih [1.3K]

Answer:

23.9g of Fe₂O₃ are produced

Explanation:

<em>Are formed when 16.7g of Fe reacts completely...</em>

<em />

Based on the reaction:

4Fe + O₃ → 2Fe₂O₃

<em>4 moles of Iron react per 1 mole of O₃ producing 2 moles of Fe₂O₃.</em>

<em />

To solve this question we need to convert the mass of iron to moles. The ratio of reaction is 2:1 -That is, 2 moles of Fe produce 1 mole of Fe₂O₃-. Thus, we can find the moles of Fe₂O₃ produced and its mass:

<em>Moles Fe -Molar mass: 55.845g/mol-:</em>

16.7g Fe * (1mol / 55.845g) = 0.299 moles of Fe

<em>Moles Fe₂O₃:</em>

0.299 moles Fe * (2 mol Fe₂O₃ / 4 mol Fe) = 0.150 moles Fe₂O₃

<em>Mass Fe₂O₃ -Molar mass 159.69g/mol-:</em>

0.150 moles Fe₂O₃ * (159.69g / mol) =

<h3>23.9g of Fe₂O₃ are produced</h3>

<em />

7 0
3 years ago
The arrangement of electrons in the orbitals of an atom
MrRa [10]
The answer is electron configuration. 
6 0
3 years ago
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