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3 years ago

Which phrase best describes the bond in O2?

Chemistry

1 answer:

Debora [2.8K]3 years ago

7 0

Double Covalent.

<h3>Explanation</h3>

O₂ exist as molecules. The subscript "2" indicates that there are only two oxygen atoms in each molecule. That rules out the possibility of ionic bonds. Ions would combine to form ionic compounds. Those compounds would contain a very large number of atoms.

Oxygen is a group 16 (VIA) element. There are six valence electrons in each oxygen atom. Each atom is two electrons away from an octet of eight electrons. An atom shares one electron with another for each covalent bond that it forms with another atom. Each oxygen atom needs two electrons and would form two covalent bonds.

There would be two covalent bonds in each O₂ molecule. The result is a double covalent bond.

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A chemist adds 1.80L of a 1.1/molL aluminum chloride AlCl3 solution to a reaction flask. Calculate the millimoles of aluminum ch

amm1812

Answer:

2000 millimoles of AlCl₃

Explanation:

From the question given above, the following data were obtained:

Volume of solution = 1.8 L

Molarity of solution = 1.1 mol /L

Millmole of AlCl₃ =?

Next, we shall determine the number of mole of AlCl₃ in the solution.

This can be obtained as follow:

Volume of solution = 1.8 L

Molarity of AlCl₃ solution = 1.1 mol /L

Number of mole of AlCl₃ =?

Molarity = mole /Volume

1.1 = Number of mole of AlCl₃ / 1.8

Cross multiply

Number of mole of AlCl₃ = 1.1 × 1.8

Number of mole of AlCl₃ = 1.98 moles

Finally, we shall convert 1.98 moles to millimoles. This can be obtained as follow:

1 mole = 1000 millimoles

Therefore,

1.98 mole = 1.98 mole × 1000 millimoles / 1 mole

1.98 mole = 1980 millimoles

1.98 mole ≈ 2000 millimoles

Thus, the chemist added 2000 millimoles of AlCl₃

7 0

3 years ago

How many cm is 0.375 ft.

ivann1987 [24]

Answer:

11.43 cm

Explanation:

8 0

3 years ago

Read 2 more answers

Match the condensed structural diagrams with the correct names

AleksAgata [21]

Answer:

Here's what I get

Explanation:

1. Names

I. CH₃-CH₂-COOH = 49. propanoic acid

II. CH₃-CH₂-OH = 46. ethanol

III. CH₃-COO-CH₂-CH₂-CH₃ = 47. propyl ethanoate

IV. H-O-CH₂-CH₂-CH₃ = 48. propan-1-ol

V. H-COO-CH₃ = 51. methyl methanoate

VI. CH₃-COOH = 50. ethanoic acid

2. Precursors

52. methyl propionate ⇒ methanol + propanoic acid

53. ethyl methanoate ⇒ ethanol + methanoic acid

6 0

3 years ago

Which sequence of events is required to form a limestone cave where you can walk around and observe cave formations, such as sta

N76 [4]

Answer:

Which sequence of events is required to form a limestone cave where you can walk around and observe cave formations, such as stalactites? (Note: stalactites hang from the ceiling - they have to hold on tight to the roof.)

A geological sequence of events as involving the lowering of the water table to expose cave structures where stalactites and stalagmites form which is described as follows,

Explanation:

1. Acidic percolated water formed cavities of solution beneath the natural water table known as phreatic zone

2. After the passage of time there is a drop in the water table dropped forming caves from cavities

3. These caves, which are air filled voids that contains adequate environment for forming stalactites and stalagmites and where they are found

5 0

4 years ago

If I add 475mL of water to 75.0mL of a 0.315M NaOH solution, what will the molarity of the diluted solution be?

pantera1 [17]

Answer is: <span>the molarity of the diluted solution 0,043 M.
</span>V(NaOH) = 75 mL ÷ 1000 mL/L = 0,075 L.
c(NaOH) = 0,315 M = 0,315 mol/L.
n(NaOH) = c(NaOH) · V(NaOH).
n(NaOH) = 0,075 L · 0,315 mol/L.
n(NaOH) = 0,023625 mol.
V(solution) = 0,475 L + 0,75 L.
c(solution) = 0,023625 mol ÷ 0,550 L.
c(solution) = 0,043 mol/L.

5 0

4 years ago