1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Volgvan
1 year ago
7

A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the followi

ng hydrocarbon: c9h20.
Chemistry
1 answer:
nata0808 [166]1 year ago
3 0

The percentages of carbon and hydrogen 84.37%  and 15.693% respectively.

<h3>What is a molar mass ?</h3>

The mass of a certain chemical element or chemical compound (g) divided by the amount of material is known as the molar mass (mol). By multiplying the standard atomic masses (in g/mol) of the component atoms, one may get the molar mass of a compound.

Molar mass of the compound is the mass of 1 mole of compound which is the sum of masses of each element.

C_9H_{20.

Mass of 1 mole of compound= mass of carbon + mass of hydrogen+ = 9(12) + 20(1)= 128 g.

Percentage by mass of carbon = \frac{mass \ of \ the \ carbon}{mass \ of \ the\  molecule }%

= 108/128 * 100

= 84.37 %

Percentage by mass of carbon = \frac{mass \ of \ the \ H}{mass \ of \ the\  molecule } %

=20/128 *100 =15.63 %

The percentages of carbon and hydrogen 84.37%  and 15.693% respectively.

To learn more about Molar mass  refer,

brainly.com/question/837939

#SPJ4

You might be interested in
Write the information obtained from solubility curves.​
salantis [7]

Explanation:

The solubility curve helps us to compare the solubility of difference substances at same temperature. It gives the idea that solubility changes with the temperature. The solubility curve helps us to predict which substance will crystalize out first from hot solution containing two or more solutes.

5 0
3 years ago
Please answer this question​
vova2212 [387]

Answer:

Yes

Explanation:

Natural gas is colorless and odorless, and explosive, so a sulfur-smell (similar to rotten eggs) is usually added for early detection of leaks. ... Natural gas is a fossil fuel. Natural gas is a non-renewable hydrocarbon used as a source of energy for heating, cooking, and electricity generation.

5 0
3 years ago
Which of the following properties decrease down a column in the periodic table?
dsp73

Answer:

Effective nuclear charge and ionization energy decreased down in the column.

Explanation:

Along Group:

As we move from top to bottom in group the atomic size increases with increase of atomic number. The electron is added into the next shell hence the valance electrons farther away from the nucleus and hold of nucleus become weaker on the valance electrons. The addition of electrons also increase the shielding and protect the outer electrons from the hold of nucleus. Thus it becomes easier to remove the electron from an atom and less energy is required that's why ionization energy decreases from top to bottom and effective nuclear charge also decrease because of shielding effect.

Along period:

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons and shielding remain constant due to addition of electron in same shell. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases.

3 0
4 years ago
Read 2 more answers
Who first proposed that matter is composed of tiny, indivisible particles?
nasty-shy [4]
In the 5th century BC, Democritus of Abdera proposed the idea of an atom, which was advanced as the smallest, individual particles 

3 0
3 years ago
Is each of the following very soluble in water? Explain.<br> (b) Sodium hydroxide
vova2212 [387]

The answer is highly soluble

<h3>How does sodium hydroxide dissolve in water?</h3>

When hydroxide (NaOH) dissolved in water, it divides into positively and negatively charged sodium ions (cations) and hydroxide ions (anions). These ions move freely and independently in water, while cations prefer to be surrounded more closely by anions and vice versa.

Although sodium hydroxide is more soluble in hot than in cold water, the process of dissolving sodium hydroxide in water is exothermic.

The unknown compound's insolubility in water might be attributed to its big hydrocarbon group. Because it is dissolved in 5% Naoh, its substituent may be acidic because the interaction with NaOH produces an anion that is soluble in aqueous solution.

learn more about sodium hydroxide refer

brainly.com/question/13041783

#SPJ4

7 0
1 year ago
Other questions:
  • In living things, traits are passed on from one generatioon to the next by the transfer of
    14·1 answer
  • This formula equation is unbalanced.
    12·1 answer
  • Which of these is heated up the least by the sun's energy?
    14·1 answer
  • ASAP WHAT ARE THE ANSWERS FOR 3,4,5,6
    9·2 answers
  • A substance is found to be reactive, flammable, soluble, and explosive. Which of these observations is a physical property?
    8·2 answers
  • In a solution there is usually more ____________than ___________ A) solute/solvent B) soluble/insoluble C) saturation/unsaturati
    5·1 answer
  • If 11.9 kJ are used to heat a sample of water the temperature increases from 20.0°C to
    10·1 answer
  • I need help like asap giving 100 points like for real
    11·2 answers
  • Please help with these chemical equations, giving 30 brainiest!!!
    12·1 answer
  • 1- How long does it take after you consume isotopes until they end up in your hair?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!