Sign In
Ask Question
Karly Frey
Chemistry
21 March, 05:38
How many oxygen atoms are in 2.80 g of quartz?
+3
Answers (
1
)
Dominique Reed
21 March, 05:55
0
The chemical formula for quartz is SiO₂
Percentage by mass of oxygen = (2 x 16) x 100 / (28 + 2 x 16)
Percentage by mass of oxygen = 53.3%
Mass of oxygen in sample = 0.533 x 2.8
Mass of oxygen = 1.49 grams
Moles of oxygen = 1.49 / 16
Moles = 0.093
One mole contains 6.02 x 10²³ particles
Thus, the atoms of oxygen:
0.093 x 6.02 x 10²³
= 5.6 x 10²²
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“How many oxygen atoms are in 2.80 g of quartz? ...”
in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
Convert 23.92inHg to Torr.
Answers (1)
According to the kinetic-molecular theory the average kinetic energy of gas particles depends on which factor? A:Volume B:Pressure C:Temperature D:Number of Particles
Answers (1)
Gold is alloyed with other metals to increase its hardness in making jewelery. a) Consider a piece of gold jewelry the weighs 9.85g and has a volume of 0.675cm^3. The jewelery contains only gold and silver which have densities of 19.3g/cm^3 and 10.
Answers (1)
Tell what the initial pressure of a gas is given the following information: a. V1 = 338L b. P2 = standard pressure (in atm) c. V2 = 294 L
Answers (1)
4. Identify the compound with covalent bonds. A) CH4 B) Ar C) LiBr D) Mg E) Nal
Answers (2)
New Questions in Chemistry
Is sidewalk cement an element or a compound?
Answers (2)
1.4 Explain why it is important to support individuals to challenge information about services that may present a barrier to participation
Answers (1)
Which describes energy changes during nuclear fission? A very large amount of energy is produced from a tremendous mass. EEUU A very large amount of energy is produced from a very small mass. G .
Answers (1)
A 0.75mol calcium carbonate (CaCO3) pellet has what mass?
Answers (1)
The pH of the acid in the stomach is 2. When a person has heartburn, the acid in their stomach is coming up the esophagus (lower throat) and burning the lining of the esophagus. Why would a person take an Alka Seltzer tablet for heartburn?
Answers (1)
Home
»
Chemistry
» How many oxygen atoms are in 2.80 g of quartz?
Sign In
Sign Up
Forgot Password?