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
Sunny_sXe [5.5K]
3 years ago
11

a mole of carbon dioxide (co2) has 12.0 grams of carbon (c) and 32.0 grams of oxygen (o). what is the percent composition of car

bon in carbon dioxide?
Chemistry
1 answer:
Pachacha [2.7K]3 years ago
7 0
The moles of the elements need to calculated first
C  = 12 / 12 = 1
02 = 32 / 16 = 2
then...
%composition of carbon = 100 x (1/2)
% composition of carbon = 50%
hope that helps<span />
You might be interested in
The cube has a mass of 72.9 g.<br><br> What is its density in g/cm3? <br><br> What substance is it?
sashaice [31]
If the cube is 3 cm on each side, then it has a volume of 27 cm^3 (3 x 3 x 3). Density is mass divided by volume, so its density is 72.9/27 = 2.7 g/cm^3. 

<span>Going by the density, the cube is made of Aluminium - density is a fairly unique quantity</span>
6 0
3 years ago
Determine the number of significant figures in the measurement quantity: 2600. kg.
xxMikexx [17]

Answer:

2600 kg has 4 significant figures

Explanation:

Any different number to zero is a significant figure

For example, 1.8 → 2 significant figures

When you  have 0 in the middle of two numbers, we consider it as a significant number

For example, 3.02 → 3 significant figures

When you have 0 on the left in the measure, we do not consider as a sgnificant figures

For example 0.0010 → 2 significant figures (10)

3.0 → 2 significant figures (0 is on the right, not the left)

7 0
3 years ago
The student who performed this experiment in the question above wrote the following discussion: "The gas sample is known to cont
Sunny_sXe [5.5K]

Answer:

What was the experimental measurement of the gas?

Explanation:

6 0
3 years ago
Mechanically weathered rock is broken down into smaller _________________________. (four word phrase)
scoundrel [369]
Weathering because Weathering<span> is the process where </span>rock<span> is dissolved, worn away or </span>broken down into smaller<span> and </span>smaller<span> pieces. There are </span>mechanical<span>, chemical and organic </span>weathering<span>processes. Organic </span>weathering<span> happens when plants </span>break<span> up </span>rocks<span> with their growing roots or plant acids help dissolve </span>rock<span>.</span>
5 0
3 years ago
Read 2 more answers
7. Which of the following is a chemical property?
Goryan [66]

Answer:

It ability to react with oxygen.

Explanation:

Freezing point and hardness can be altered. Physical properties can also be reversed. Chemical properties on the other hand cannot. The product after reaction with an element never changes.

8 0
3 years ago
Other questions:
  • An uncharged atom of gold has an atomic number of 79 and an atomic mass of 197. this atom has ______ protons, ______ neutrons, a
    15·2 answers
  • A general term for a chemical which accelerates a reaction without becoming chemically involved is called a ______.
    8·1 answer
  • using the soubility curve what is the solubilityof nh4cl in 10 mL of water at a temperature of 60 degrees Celsius​
    7·1 answer
  • Define and give 3 examples of psychical properties ​
    11·1 answer
  • PLEASE HELP ASAP
    5·1 answer
  • Balance the combustion reaction between octane and oxygen. 2C8H18 + O2 → CO2 + H2O
    12·2 answers
  • 200 feet in 30 seconds is what speed?
    15·2 answers
  • Nitrogen and hydrogen react to form ammonia, like this:N2(g)+3H2(g)→2NH3(g)Use this chemical equation to answer the questions be
    10·1 answer
  • Which of the following is a valid conversion factor?
    9·1 answer
  • Does anyone know Bible thing cuz I don’t know what to write and I need help if you know this ok
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!