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
sashaice [31]
4 years ago
9

What is the percent by mass of oxygen in carbon dioxide (CO2)?

Chemistry
1 answer:
wariber [46]4 years ago
8 0

Answer:

= 72.73%

Explanation:

The percentage by mass of an element is given by;

% element = total mass of element in compounds/molar mass of compound × 100

The mass of oxygen in carbon dioxide = 32 g

Molar mass of CO2 = 44 g

Therefore;

% of O2 = 32/44 × 100%

             <u>= 72.73%</u>

You might be interested in
A "shielding gas" mixture of argon and carbon dioxide is sometimes used in welding to improve the strength of the weld. if a gas
kodGreya [7K]
Dalton's Law of Partial Pressures, commonly applied to ideal gases, explains that the partial pressures of individual, non-reacting gases are equal to the total pressure exerted by the gas mixture. The given gas mixture composed of 90% argon and 10% carbon dioxide has the following partial pressures: 3.6 atm for argon and 0.4 atm for carbon dioxide (answer).
6 0
3 years ago
Read 2 more answers
which of the following compounds would be expected to be hard and brittle and to have a high melting point
yawa3891 [41]
Ionic compounds is your answer
5 0
4 years ago
URGENT! PLEASE HELP ASAP
barxatty [35]
14.7 is the right answer plus 86
4 0
3 years ago
read carefully and do this questions all part all questions if someone do this questions I will make you brainly and give you th
Alex787 [66]

Answer:

2a. Calcium chloride

2b.hydrochloride acid

2c. water molecules

2d.hydrochloric acid

2e.carbon dioxide

Explanation:

CaCO3+2HCl=CaCl2+CO2+H2O

5 0
3 years ago
24 grams C convert to moles
Anon25 [30]

Answer:

Number of moles = 2 mol

Explanation:

Given data:

Mass of carbon = 24 g

Number of moles = ?

Solution:

Formula:

Number of moles = mass/ molar mass

Molar mass of carbon is 12 g/mol.

Now we will put the values in formula.

Number of moles = 24 g/ 12 g/mol

Number of moles = 2 mol

5 0
3 years ago
Other questions:
  • What is an environmental impact study
    7·1 answer
  • What kind of vertebrate was samson most likely looking at
    5·1 answer
  • mary walked north her home to sheila home is 4.0 away then turned right and walked another 3.0 kilometers to the supermarket whi
    11·1 answer
  • Which of the following elements is an example of a metalloid?
    9·2 answers
  • an object with a mass of 7.6 G raises the level of water in a graduated cylinder from 25.1 ml to 30.8 ml what is the density of
    5·1 answer
  • Butane burns is shown in the balance chemical equation 2C4H10+1302-&gt;10H2O+8CO2. If 6 mol of butane burns______mol of carbon d
    13·1 answer
  • What is a compound?
    8·2 answers
  • Which bodies of salt water are connected and together make up the global ocean?
    13·2 answers
  • Pregunta: ¿Por qué se enfría más vapor de agua en Ferris del Oeste que en Ferris del este?​
    13·1 answer
  • A surfact that DOES NOT allow water to pass through.​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!