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dmitriy555 [2]
2 years ago
9

What is a chemical formula, and what does it tell you?

Chemistry
2 answers:
katrin2010 [14]2 years ago
7 0

Explanation:

chemical formula tells you the specific elements included in the compound and the number of atoms of each. The letters in a chemical formula are the symbols for the specific elements. So for example, H means hydrogen.

eduard2 years ago
6 0

Explanation:

<em>A</em><em> </em><em>chemical</em><em> </em><em>formula</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>way</em><em> </em><em>of</em><em> </em><em>presenting</em><em> </em><em>information</em><em> </em><em>about</em><em> </em><em>the</em><em> </em><em>chemical</em><em> </em><em>properties</em><em> </em><em>of</em><em> </em><em>atoms</em><em> </em><em>that</em><em> </em><em>contribute</em><em> </em><em>a</em><em> </em><em>particular</em><em> </em><em>chemical</em><em> </em><em>compound</em><em> </em><em>or</em><em> </em><em>molecule</em><em>,</em><em> </em><em>using</em><em> </em><em>chemical</em><em> </em><em>elements</em><em>. </em><em> </em>

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What is the mass number of an iron atom that has 29 neutrons?
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The answer is 54

Explanation:

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Using this illustration, what is the chemical formula? Picture and possible answers are below.
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Is Lilium lancifolium Heterotroph, Autotroph, or Both
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The following three equations represent reactions done in this lab exercise. Classify each reaction by their type. Note there ma
gulaghasi [49]

Answer: 1. Cu(s)+4HNO_3(aq)rightarrow Cu(NO_3)_2(aq)+2NO_2(g)+2H_2O(l) : oxidation reduction

2. Cu(NO_3)_2(aq)+2NaOH(aq)\rightarrow Cu(OH)_2(s)+2NaNO_3(aq) : precipitation

3. CuO(s)+2HCl(aq)\rightarrow CuCl_2(aq)+H_2O(l) : Double displacement

Explanation:

Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.

Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.

Cu(s)+4HNO_3(aq)rightarrow Cu(NO_3)_2(aq)+2NO_2(g)+2H_2O(l)

Double displacement reaction is defined as the reaction where exchange of ions takes place. Double displacement reaction in which one of the product remain in solid form are represented by (s) after their chemical formulas. Such double displacement reaction are called as precipitation reaction.

Cu(NO_3)_2(aq)+2NaOH(aq)\rightarrow Cu(OH)_2(s)+2NaNO_3(aq)

Double displacement reaction is defined as the reaction where exchange of ions takes place.

CuO(s)+2HCl(aq)\rightarrow CuCl_2(aq)+H_2O(l)

Single displacement reaction is defined as the reaction where more reactive element displaces a less reactive element from its chemical reaction.

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6 0
3 years ago
A naturally occurring oil co-distills with water to produce an oil/water distillate that is 20% oil by weight. If the molecular
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Answer:

Explanation:

Partial pressure of oil = mole fraction of oil x total pressure

mole fraction of oil = mole of oil / mole of water + mole of oil

= mole of oil = mass of oil / molecular weight of oil

= 20 / 100 = .2

mole of water = 80 / 18

= 4.444

mole fraction of oil =  .2 / .2 + 4.444

= .2 / 4.644

Partial pressure of oil = mole fraction of oil x total pressure

= (.2 / 4.644 ) x 760 mm

= 32.73 mm Hg .

3 0
3 years ago
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