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dimulka [17.4K]
3 years ago
15

4. What animal resources from other continents benefited South Americans?

Chemistry
1 answer:
Rus_ich [418]3 years ago
3 0
South America's major mineral resources are gold, silver, copper, iron ore, tin, and petroleum. These resources found in South America have brought high income to its countries especially in times of war or of rapid economic growth by industrialized countries elsewhere.
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What is the ratio for calcium bicarbonate
guapka [62]

ca(HCO3)2 this is what  i think it is

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3 years ago
3. compared to the melting points of ionic compounds, the melting points of molecular solids tend to be ___.
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C) Lower, 

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3 years ago
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If the net force on an object is 0 N, the forces are considered unbalanced. :true or false?​
katovenus [111]

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False, the object is stationary therefore the object is balanced.

Explanation:

3 0
3 years ago
Phosgene has the elemental compositions of 12.14% carbon, 16.17 % oxygen, and 71.69% chlorine by mass.
inessss [21]

Answer:

a) COCl₂.

b) The molecular formula is COCl₂.

Explanation:

To obtain empirical formula of phosgene you should divide elemental compositions over atomic mass of each atom, and divide these results between the smallest, thus:

C = 12,14%/12,01 = 1,01

O = 16,17%/16 = 1,01

Cl = 71,69%/35,45 = 2,02

Empirical formula:

C = 1,01/1,01 = 1

O = 1,01/1,01 = 1

Cl = 2,02/1,01 = 2

C₁O₁Cl₂ ≡ COCl₂

b) You need to find the molar mass of the empirical formula to determine the ratio of the real formula, thus:

1×C 12,01g/mol =

1×O 16 g/mol =

2×Cl 35,35g/mol = 98,91g/mol

As real molecular mass is 98,9 g/mol. The molecular formula: COCl₂

I hope it helps!

6 0
4 years ago
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They have a chemical imbalance 

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