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3 years ago

Organic compounds are composed of __________ and at least one hydrogen atom.

1 answer:

3 0

I think the correct word to fill in the blank would be carbon. Organic compounds are composed of carbon and at least one hydrogen atom. It is basically any compound that would contain carbon and covalently bonded to other elements or atoms usually these are hydrogen, nitrogen and oxygen. All living things are based on these compounds. These are the building blocks of organic chemistry. These compounds can be seen anywhere in Earth. May it be animals, plants, the soil, sugar, microorganisms and even in humans. Examples of these compounds are methanol, DNA, glucose, hexane, acetic acid, butane and the like.

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Gasoline is a mixture of compounds. A gasoline sample was found to be 2.851% (by mass) octane (C₈H₁₈). 482.6 g of gasoline is co

Pani-rosa [81]

Answer:

See below.

Explanation:

The mass of octane in the sample of gasoline is 0.02851 * 482.6 = 13.759 g of octane.

The balanced equation is:

2C8H18(l) + 25O2(g) ----> 16CO2(g) + 18H2O(g)

From the equation, using atomic masses:

228.29 g of octane forms 704 g of CO2 and 324.3 g of H2O

So the mass of CO2 formed from the combustion of 13.759 g of octane = (704 * 13.759) / 228.29

= 42.43 g of CO2.

Amount of water = 324.3 * 13.759) / 228.29

= 19.55 g of H2O.

5 0

3 years ago

Hydrogen peroxide rapidly decomposes to water and oxygen. If the water is appearing at a rate of 2.0 M/s, what is the rate of th

balu736 [363]

Answer:

Rate of reaction = 2.0 M/s

Explanation:

2H2O2(g) --> 2H2O(g) + O2(g)

Rate of formation of H2O = 2.0 M/s

Rate of reaction can be measured using multiple techiques and parameters like volume, pressure etc.

Among these techniques is the measurement of appearance of products.

This means we have;

Rate of reaction = Rate of appearance of product

Hence;

Rate of reaction = 2.0 M/s

4 0

4 years ago

if you could take 1 step every second and one step is equal to 3 feel how many miles could you walk in a year of 365 days if you

skad [1K]

If you never stopped you could walk 17918.2 miles

6 0

3 years ago

ClO(4)− Express your answer as a chemical formula.

Nimfa-mama [501]

ClO(4)− is regarded as perchlorate ion and are produced commercially in most situations as salts via industries and in the laboratory.

<h3>What is Perchlorate ion?</h3>

This ion is referred to as a monovalent inorganic anion and is obtained by deprotonation of perchloric acid. It is composed of chlorine and oxygen atoms in the ratio 1 to 4 respectively.

This has 32 valence electrons available in the Lewis structure and is used in the commercial production of solid rocket fuel.This ion has a molar mass of 99.451 g mol−1 and is used in different processes such as an oxidizer and to control static electricity during the process of food preservation in industries.

Therefore ClO₄− is also regarded as perchlorate ion and is the most appropriate choice.

Read more about Perchlorate ion here brainly.com/question/16895150

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3 0

2 years ago

Arrange the following gases in order of decreasing density at STP. Ne, O2, F2, Cl3

kipiarov [429]

Answer: Cl₃ > F₂ > O₂ > Ne

Explanation:

1) All the gases are at the same temperature and pressure: STP (O°, 1 atm).

2) All the gases are represented by one molecule (or mole of molecules, it is the same for our puroposes).

3) As per Avogadro's law and the ideal gas equation, the same number of particles (of any gas) occupy the same volume at the same temperature and pressure.

For example, at STP the volume of 1 mol of gas is 22.4 liter.

4) Since, density is equal to mass / volume, and you assume the same number of molecules of each gas, the order of the densities is the same that the order of the molar masses.

5) Then, you just need to state the molar mass of each gas and order in decreasing order of molar mass to have the correct order for density.

6) Molar masses:

i) Ne: 20.180 g/mol

ii) O₂: 2× 15.999 g/mol = 31.998 g/mol

iii) F₂: 2×18.998 g/mol = 37.996 g/mol

iv) Cl₃: 3×35.453 g/mol = 106.359

7) Then the order is: 106.359 > 37.996 > 31.998 > 20.18 ⇒ is Cl₃ > F₂ > O₂ > Ne.

Note: the values calculate are not of densities but of molar masses. The order is what is the same.

6 0

3 years ago

Read 2 more answers