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Tanzania [10]
3 years ago
12

Copper (Cu) is often used for electrical wiring and cooking pans. However, iron (Fe) is much more common on Earth than copper. W

hy might copper be used instead of iron, if iron is easier to obtain?
Chemistry
1 answer:
Paha777 [63]3 years ago
4 0
Copper is better at conducting electricity than iron.
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Consider the balanced chemical equation: 2o3(g) → 3o2(g). how many moles of o2 are produced when 0.50 mol of o3(g) reacts
kiruha [24]
   2O3→3O2
 The  number  of moles of O2  that  are   produced  when 0.50  moles  of O3(g)  reacted is  0.75  moles

  calculation and explanation

   2  moles    of O3(ozone)  react  to give   3 moles of O2  (oxygen  gas,therefore the reacting   ratio  between O3 :O2 is  2:3

 
 if 0.50  moles of  O3  reacted  then,by use  of  reacting ratio (2:3)  find the moles of O2  produced

That is   0.50 x3/2  =  0.75   moles
7 0
3 years ago
Please help!!! (im really bad at chemistry)
Lubov Fominskaja [6]

Answer:

1000ml/1L

Explanation:

8 0
3 years ago
Proteins carry out cellular functions. where do they get instructions?
Alex787 [66]
Photosynthesis and cellular respiration go hand and hand. Remember the two equations are just a reverse of the opposite equation. 

Cellular Respiration-
C₆H₁₂O₆ + 6O₂ (Yeilds or Makes) 6CO₂ + 6H₂O + ATP (Or Energy)

Photosynthesis-
6CO₂ + 6H₂O + ATP (Or Sunlight) (Yeilds or Makes) C₆H₁₂O₆ + 6O<span>₂  
</span>
<span>When a plant goes through photosynthesis it produces oxygen as a waste product, which you should know is what animals use to breathe, well when animals use oxygen in the process, they also make a waste product which happens to be Carbon Dioxide, which a plant uses to make glucose during photosynthesis, so if we didin't have one we wouldn't have the other.

ANSWER: Cells get their instruction from the formula.</span>
6 0
3 years ago
How would you explain chemical bonding concept regarding to atoms​
blsea [12.9K]

Answer:

A single bond between two atoms corresponds to the sharing of one pair of electrons. Two hydrogen atoms can then form a molecule, held together by the shaped pair of electrons. Each H atom now has the Noble gas electron configuration of helium ( He). The pair of shared electrons forms a single covalent bond.

6 0
3 years ago
The mystery of the unknown substance A prominent automotive businessman has been murdered in New York. The Crime Scene Investiga
Alisiya [41]
<span>Data:

1) molar mass: 58.0714 g.

2) mass analysis

C: 18 g
H: 3 g
O: 8 g.

Solution
</span>
<span>What is the percent composition of all the components in the liquid?

mass of C + mass of H + mass of O = 18g + 3g + 8g = 29 g

Percent composition:

C: (18g / 29g) * 100 = 62%

H: (3g / 29g) * 100 = 10%

O: (8g / 29g) * 100 = 28%
                               --------------
           Total               100%

What is the empirical formula of the compound?

Convert masses to number of moles by dividing each mass by the atomic mass of the correspondant element:

C: 18 g/ 12.0 g/mol = 1.5 mol

H: 3 g / 1.0 g/mol = 3 mol

O: 8 g / 16 g/mol = 0.5 mol

Divide each number of moles by the smaller, i.e. 0.5 mol

=> C: 1.5 mol / 0.5 mol = 3 mol
=> H: 3 mol / 0.5 mol = 6 mol
=> O: 0.5 mol / o.5 mol = 1 mol

=> Empirical formula: C3 H6 O

What is the molecular formula of the unknown liquid?

First,calculate the molar mass of the empirical formula:

C3 H6 O => 3 * 12 g/mol + 6*1 g/mol + 16 g/mol = 58 g/ mol

Secont, given that the molar mass is the same that the empirical mass, the molecular formula is the same empirical formula.

=> Molecular formula = C3 H6 O.

This compound has been identified as a ketone.

Go online and figure out the name of this compound.

It is easy to find that this compound is propanone or acetone (both names are valid).

Now you can go online and find its  characteristics and common uses.

Can you identify the killer from this information? How?

Likely they think you can presume that the killer is the actress, because women use acetone regularlty to remove the nail polish.
</span>
8 0
4 years ago
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