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
crimeas [40]
3 years ago
5

How many moles of CO2 are there in 8.91 x 1023 molecules of CO2? (1 mole= 6.02 x 1023)

Chemistry
1 answer:
Karo-lina-s [1.5K]3 years ago
6 0

Answer:

<h2>1.48 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{8.91 \times  {10}^{23} }{6.02 \times  {10}^{23} }  =  \frac{8.91}{6.02}  \\  = 1.480066...

We have the final answer as

<h3>1.48 moles</h3>

Hope this helps you

You might be interested in
Where is most of the water on earth found? What percentage?
bezimeni [28]

Answer:

The ocean holds about 97 percent of the Earth's water; the remaining three percent is found in glaciers and ice, below the ground, in rivers and lakes. Of the world's total water supply of about 332 million cubic miles of water, about 97 percent is found in the ocean.

wait..if you asking about the country it's Brazil✌️

8 0
3 years ago
What happens to the partial pressure of oxygen in a sample of air if the temperature is increased?
ludmilkaskok [199]

Air is mainly composed of N2  (78%), O2 (21%) and other trace gases. Now, the total pressure of air is the sum of the partial pressures of the constituent gases. The partial pressure of each gas, for example say O2, can be expressed as:

p(O2) = mole fraction of O2 * P(total, air)  ----(1)

Thus, the partial pressure is directly proportional to the total pressure. If we consider a sealed container then, as the temperature of air increases so will its pressure. Based on equation (1) an increase in the pressure of air should also increase the partial pressure of oxygen.

6 0
4 years ago
Read 2 more answers
Why is the increasing amount of carbon dioxide being taken up by the oceans a cause for concern?
Anna007 [38]

Answer;

-More carbon dioxide causes an increase in carbonic acid (H2CO3) which leads to a decrease in the concentration of carbonate ion (CO32-).

Explanation;

-Carbon dioxide is added to the atmosphere whenever people burn fossil fuels. Oceans play an important role in keeping the Earth's carbon cycle in balance.

-As the amount of carbon dioxide in the atmosphere increases, the oceans absorb a lot of it. In the ocean, carbon dioxide reacts with seawater to form carbonic acid which causes the acidity of seawater to increase.

-As long as we keep putting extra carbon dioxide in the atmosphere, the acidity of the ocean will continue to increase. The effect is that; Increasing acidity makes it harder for corals to build skeletons and for shellfish to build the shells they need for protection. Corals are particularly important because they provide homes for many other sea creatures.

7 0
3 years ago
28Which is true?
sergij07 [2.7K]
28) All elements are made of atoms

29)Protons and Neutrons
-Electrons make up the outside of the Nucleus
8 0
3 years ago
4. Calculate the final concentration if water is added to 1.5 L of a 12 M
konstantin123 [22]

Answer:

6M

Explanation:

(Molarity x Volume)concentrated soln = (Molarity x Volume)diluted doln

Molarity dilute soln = [(M x V)conc/V (dilute)] = 1.5L x 12M / 3.0L = 6M final dilute soln

6 0
4 years ago
Other questions:
  • Which reactants would lead to a spontaneous reaction?
    12·1 answer
  • The density of the hydrocarbon in part (a) is 2.0 g l-1 at 50°c and 0.948atm. (i) calculate the molar mass of the hydrocarbon. (
    6·1 answer
  • II. Binding Forces A. Write a brief, one or two sentence, description of each binding force listed below. 1. London dispersion f
    14·1 answer
  • Explain how mass out 10 mL of milk
    7·1 answer
  • Which element has 3 valence electrons in the 4dsublevel
    11·1 answer
  • Na3PO4+_CaCl2--&gt;_NaCl + __Ca3(PO4)2​. NEED HELP ASAP
    7·1 answer
  • Based on the number of valence electrons indicated by its location in the periodic table ,which elements behavior would you pred
    12·1 answer
  • If a solution is made by using 0.45 moles of NaCl and dissolving it with water so that the total volume is 0.750 liters, what wi
    8·1 answer
  • How are the properties of high-tech ceramics the same as those of traditional clay ceramics, and how are they different? Refer t
    7·1 answer
  • The liquid hydrogen/oxygen rocket will burn for about 8 minutes at a rate of 90,000 gallons of liquid hydrogen per minute. The d
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!