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Dmitry_Shevchenko [17]
2 years ago
15

Balance the following chemical equation by providing the correct coefficients:

Chemistry
1 answer:
Mandarinka [93]2 years ago
7 0

Answer:

CO + 3H2 -> H20 + CH4 :)) !!

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Three mixtures were prepared from three very narrow molar mass distribution polystyrene samples with molar masses of 10,000, 30,
8_murik_8 [283]

Answer:

(a). 46,666.7 g/mol; 78,571.4 g/mol

(b). 86950g/mol; 46,666.7 g/mol.

(c). 86950g/mol; 43,333.33 g/mol

Explanation:

So, we are given the molar masses for the three samples as: 10,000, 30,000 and 100,000 g mol−1.

Thus, the equal number of molecule in each sample = ( 10,000 + 30,000 + 100,000 ) / 3 = 46,666.7 g/mol.

The average molar mass = [ ( 10,000)^2 + (30,000)^2 + 100,000)^2] ÷ 10,000 + 30,000 + 100,000 = 78,571. 4 g/mol.

(b). The equal masses of each sample = 3/[ ( 1/ 10,000) + (1/30,000 ) + (1/100,000) ] = 20930.23 g/mol.

Average molar mass = ( 10,000 + 30,000 + 100,000 ) / 3 = 46,666.7 g/mol.

(c). Equal masses of the two samples = (0.145 × 10,000) + (0.855 × 100,000)/ 0.145 + 0.855 = 86950g/mol.

The weight average molar mass = 1.7 + 10,000 + 100,000/ 1.7 + 1 = 43,333.33 g/mol.

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3 years ago
Leopard seals are animals adapted to survive in the freezing conditions of Antarctica. Individual leopard seals vary in their di
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Answer:

B. Thicker layer of blubber

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For the leopard seals to survives this harsh environment, it must have a thicker layer of blubber

Blubber is a thick layer of fat. It is called the adipose tissues and found in most marine organisms.

  • This layer helps in insulating the body against heat loss.
  • By so doing, the animal is able to conserve internal heat.
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Atoms of metallic elements can form ionic bonds, but they aren't very good at forming covalent bonds. why?
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<span>They have a great tendency to lose electrons</span>
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The drawing is correct because there are 12 atoms of each type on each side of the arrow.

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3 years ago
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