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
Ad libitum [116K]
3 years ago
14

How many Atoms are present in 155.8 grams of zirconium?

Chemistry
1 answer:
alex41 [277]3 years ago
3 0

Answer: 2.12×10²³ atoms.

Explanation:

From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02×10²³ atoms. This simply means that 1 mole of zirconium also 6.02×10²³ atoms.

Thus, we can obtain the number of atoms present in 0.3521 mole of zirconium as follow:

1 mole of zirconium also 6.02×10²³ atoms.

Therefore, 0.3521 mole of zirconium will contain = 0.3521 × 6.02×10²³ = 2.12×10²³ atoms.

Therefore, 0.3521 mole of zirconium contains 2.12×10²³ atoms.

You might be interested in
Which of the following are the requirements when creating a hypothesis for an experiment? Check ALL that apply. A: A hypothesis
kkurt [141]

Answer:

You're answer would be B.

Explanation:

5 0
3 years ago
Read 2 more answers
Select a system in the human body and explain how a breakdown in the digestive system might affect the system you just chose.\
Citrus2011 [14]
The circulatory system works with the digestive system. Once the food is digested, the circulatory systems absorb and uses the nutrients in the food. If the digestive system were to break down, the circulatory will not have the nutrients it needs to sufficiently run the body. 
6 0
3 years ago
Which postmortem parameter reaches a maximum at 12 hours and is gone within 36 to 48 hours?1.rigor mortis2.cloudiness of the eye
Olenka [21]
The cloudiness of the eyes increases to a maximum and then decreases. This is because initially, after death, all the muscles relax, dilating the pupil. Some time later, rigor mortis sets in, contracting the pupil. Thus, the cloudiness fades.
3 0
3 years ago
What is the mass of 80.0mL of ethanol at 20 degress celcius
Oxana [17]

Answer: What is the mass, in grams, of 135 mL of ethanol? d=0.789 g/mL - the ethanol density. V=135 mL - the volume of ethanol. m=0.789g/mL*135mL=106.515g ~ 106.5g- the mass of ethanol.

Explanation:

Hope this helps :)

4 0
3 years ago
What is the mass of oxygen in 3.34 g of potassium permanganate?
3241004551 [841]

Answer:

1.35 g

Explanation:

Data Given:

mass of Potassium Permagnate (KMnO₄) = 3.34 g

Mass of Oxygen: ?

Solution:

First find the percentage composition of Oxygen in Potassium Permagnate (KMnO₄)

So,

Molar Mass of KMnO₄ = 39 + 55 + 4(16)

Molar Mass of KMnO₄ = 158 g/mol

Calculate the mole percent composition of  Oxygen in Potassium Permagnate (KMnO₄).

Mass contributed by Oxygen (O) = 4 (16) = 64 g

Since the percentage of compound is 100

So,

                        Percent of Oxygen (O) = 64 / 158 x 100

                        Percent of Oxygen (O) = 40.5 %

It means that for ever gram of Potassium Permagnate (KMnO₄) there is 0.405 g of Oxygen (O) is present.

So,

for the 3.34 grams of Potassium Permagnate (KMnO₄) the mass of Oxygen will be

                  mass of Oxygen (O) = 0.405 x 3.34 g

                  mass of Oxygen (O) = 1.35 g

5 0
3 years ago
Other questions:
  • Suppose a friend says that we don't need to worry about the rising temperatures associated with global climate change. Her claim
    11·1 answer
  • The best way to explain the relationships in a nuclear reaction is by using:
    6·1 answer
  • Which of the following are dipole-dipole interactions that occur only between molecules containing N-H, O-H or F-H bonds?
    13·2 answers
  • How many grams of bromine are required to react completely with 37.4 grams aluminum chloride?
    8·2 answers
  • Which of the following presidential candidates was nominated by self-announcement?
    12·1 answer
  • The cycle repeats when the carbon stored in the atmosphere as carbon dioxide gas is taken in.
    11·2 answers
  • NEED HELP! An experiment _____. must always be done in a laboratory is best done if only one variable is tested for at a time ca
    6·1 answer
  • Which organism has the following characteristics: heterotrophic, eukaryotic,
    7·1 answer
  • Why is the Law of Conservation of Mass a law, rather than a theory?
    5·1 answer
  • How do you calculate metal density?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!