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Sindrei [870]
3 years ago
8

A reaction contains two reactants, A and B. If A is doubled, there will be a greater number of effective collisions between reac

tants. TRUE FALSE
Chemistry
1 answer:
svlad2 [7]3 years ago
4 0
True true true true true
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Which of the following elements in group 1 of the periodic table has the smallest atomic radius?
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The element in group 1 of the periodic table that had the smallest atomic radius is A. Lithium.
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which industrial city would have fewer air pollution incidents related to temperature inversions one on the great plains or one
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I'm not positive, but I believe it would be one near the Rocky Mountains.
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When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced. 2 Al ( s ) + 6 HCl ( aq ) ⟶ 2AlCl3 ( aq ) +
Rufina [12.5K]

Answer:

The answer to your question is  V = 19.9 L

Explanation:

Data

mass of Al = 8.60 g

volume of H₂ = ?

Balanced chemical reaction

                 2Al  +  6HCl  ⇒   2AlCl₃  +  3H₂

1.- Use proportions to calculate the mass of H₂ produced

Atomic mass of Al = 2 x 27 = 54 g

Atomic mass of H₂ = 6 x 1 = 6 g

                54 g of Al -------------------- 6 g of H₂

                  8 g  of Al -------------------  x

                  x = (8 x 6) / 54

                  x = 48 / 54

                  x = 0.89 g of H₂

2.- Calculate the volume of H₂

- Convert the H₂ to moles

                    1 g of H₂ --------------- 1 mol

                   0.89 g    ---------------- x

                    x = 0.89 moles

                    1 mol of H₂ -------------- 22.4 l

                   0.89 moles  ------------- x

                    x = (0.89 x 22.4) / 1

                   x = 19.9 L                        

6 0
2 years ago
A coyote and an oak tree both have DNA?
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Answer:

true, they both have different types of DNA.

7 0
3 years ago
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The main reason that cs2 has a higher boiling point than co2 is that cs2
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Explanation:

Inspite of having similar intermolecular forces, CS2 has a higher boiling point than CO2, since it has a greater molar mass. The potential energy of molecules reduces until a certain level as they get closer to each other. Although the polarity of both CO2 and CS2 are cancelled because of their linear structure.

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3 years ago
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