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2 years ago

The oxidation number of carbon changes from -1 to +4.

Chemistry

2 answers:

nekit [7.7K]2 years ago

7 0

Answer:

Explanation:

Neko [114]2 years ago

6 0

Carbon is oxidized because to increase of its oxidation number.
Oxygen is reduced because to decrease of its oxidation number.
If the oxidation number increase, the element is giving electrons. Electrons are transferred from the oxidized atom to the reduced atom.

If you find some mistake in my English, please let me know!

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Which quantum number distinguishes the different shapes of the orbitals?

UkoKoshka [18]

The four quantum numbers are:
principle quantum number: this number describes the energy of orbitals. It describes the most probable distance between the electron and the nucleus.
angular quantum number: this number describes the shape of orbitals, and thus, describes the angular distribution.
magnetic quantum number: this number describes the number of orbitals and how they are oriented within the subshell
spin quantum number: this number determines the direction of the spin of the electron.

Based on the above, the quantum number that distinguishes the different shapes of the orbitals is the angular quantum number

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3 years ago

True or false If an atom is charged positive, it contains more protons than electrons.

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Answer:

TRUE

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2 years ago

Why does the amount of water pressure determine the size of bubbles in the water

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Answer:

Water vapor pressure is a function of temperature (and pressure as well). It increases with the temperature. When vapor is produced on the heat surface, bubble forms. The size of the bubble is determined by the buoyancy and the water pressure at the location.

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Natali5045456 [20]

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2AI + 6HCI -> 2AICI3+ 3H2 aluminum reacts with hydrochloric acid. How many moles of aluminum are necessary to produce 11 L of

Eduardwww [97]

Answer:

0.33 moles of aluminum are necessary to produce 11 L of hydrogen gas at STP.

Explanation:

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

You can apply the following rule of three: if by STP conditions, 22.4 L represents 1 mole of hydrogen, 11 L how many moles will they be?

$amount of moles of hydrogen=\frac{11 L*1 mole}{22.4 L}$

amount of moles of hydrogen= 0.491 moles

On the other side, the balanced reaction is:

2 AI + 6 HCI → 2 AICI₃ + 3 H₂

By reaction stoichiometry, the following amounts of moles of each compound participate in the reaction:

AI: 2 moles
HCI: 6 moles
AICI₃: 2 moles
H₂: 3 moles

Then you can apply the following rule of three: if 3 moles of hydrogen are produced by 2 moles of aluminum, 0.491 moles of hydrogen are produced by how many moles of aluminum?

$amount of moles of aluminum=\frac{0.491 moles of hydrogen*2 moles of aluminum}{3 moles of hydrogen}$

amount of moles of aluminum= 0.33 moles

0.33 moles of aluminum are necessary to produce 11 L of hydrogen gas at STP.

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2 years ago