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saveliy_v [14]
3 years ago
11

Which of the following is an example of oxidation? A. Charcoal is placed on a grill and lighting fluid poured over it. B. A car

gets rusty over the course of a few years. C. Sodium bicarbonate is added to vinegar in water, and gas bubbles fizz to the surface. D. A cube of sugar dropped into a cup of hot water slowly disappears.
Chemistry
1 answer:
Vikentia [17]3 years ago
4 0

Answer:

<u>The Answer is (B)  A car get rusty over the course of few years</u>Explanation:

<u>Explanation:</u>

  • <u>Oxidation </u>refers to the process of loss of electrons by a molecule,atom or ion during a chemical reaction.The process which is just the opposite of oxidation is reduction,it occurs when their is gain of electrons .
  • <u>When iron reacts with the oxygen it forms a chemical know as Rust.In this case iron has lost some electrons and the oxygen has gained some electrons</u>

<u></u>

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The option which gives the correct mole ratios is H₂S : SO₂ = 2 : 2 and O₂ : H₂O = 3 : 2

<h3 /><h3>What is Mole ratio ?</h3>

It is a conversion factor between compounds in a chemical reaction, that is derived from the coefficients of the compounds in a balanced equation

Molar ratio also known as stoichiometry is the ratio in which the reactants and products are either formed or reacted in the given equation

The balanced equation for given reaction is as follows ;

2H₂S + 3O₂ --> 2SO₂ + 2H₂O

Molar ratio can be determined by the coefficients of the compounds in the balanced reaction

Coefficient is the number in front of the chemical compound and they are as follows

  • H₂S - 2
  • O₂ - 3
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  • H₂O - 2

Therefore, correct option is H₂S : SO₂ = 2 : 2 and O₂ : H₂O = 3 : 2

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https://brainly.in/question/32799056

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2 years ago
Write 6319857 in scientific notation
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5 0
3 years ago
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Each astronaut produces 8.8 x 10^2 g CO2 per day that must be removed from the air on the shuttle. If a typical shuttle mission
Sever21 [200]
The answer to this would be:

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2 LiOH + CO2 -----> Li2CO3 + H2O

(3.50 × 10^4 g LiOH) (1 mol LiOH/ 24 g LiOH) ( 1 mol CO2 / 2 mol LiOH) ( 44 g CO2 /1 mol CO2) = 32, 083.33 g CO2

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Option (3) 334J.

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The following data were obtained from the question:

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Heat (Q) =?

The heat released can be obtained as follow:

Q = m·ΔHf

Q = 1 x 334

Q = 334J.

Therefore, the heat released when 1g is converted to ice is 334J.

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elixir [45]

Answer:

Explanation:

1) make an observation that describes a problem,

2) create a hypothesis,

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