![hjukhvfd5723](/avatars/40869.jpg)
hjukhvfd5723
19.07.2019 •
Chemistry
Em 150 gramas de alumínio, quantos átomos deste elemento estão presentes? dados: mm(ai) = 27 gmol-¹ número de avogadro = 6,02 x 10²³
Solved
Show answers
More tips
- C Computers and Internet Google Search Tips and Tricks: Everything You Need to Know...
- S Science and Technology Why is there no gravity on other planets?...
- F Food and Cooking Deflope: What is it and how does it work?...
- B Business and Finance How to Create a Business Plan? Your Ultimate Guide...
- F Food and Cooking Unusually Delicious Shashlik - Follow the Etiquette of Proper Preparation!...
- C Computers and Internet Make Easy Accessible Screenshots on iPad in Just a Few Minutes...
- T Travel and tourism Lost in the Catacombs: What to Do?...
- F Family and Home Protect Your Home or Apartment from Pesky Ants...
- H Health and Medicine How to Treat Styes: Causes, Symptoms, and Home Remedies...
- L Legal consultation What Documents Are Required for a Russian Passport?...
Answers on questions: Chemistry
- C Chemistry Help asap i have to get a good grade on this...
- C Chemistry How to find the percentage abundance of isotope...
- C Chemistry Liquid octane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 10.3 g of octane is mixed with 23. g of oxygen. Calculate the maximum...
- C Chemistry Write a chemical equation for the reaction that occurs in the following cell: Cu|Cu2 (aq)||Ag (aq)|Ag....
- C Chemistry How can the shape of a molecule determine its polarity....
- C Chemistry If 64.9 g of K2CO3 was used to create a 2.5 M solution. What is the volume of the solution? (Include a unit) The molar mass is 138.205 g/mol....
- C Chemistry We can be sure that a mole of table sugar and a mole of vitamin c are equal in their1) mass in daltons.2) mass in grams.3) number of molecules.4) number of atoms.5) volume....
- C Chemistry The photoelectric effect tells us that...
- C Chemistry What amounts do you compare when measuring concentration...
- C Chemistry How many moles of aluminum are needed to react completely with 1.2 mol of feo...
Ответ:
In 150 grams of aluminum, how many atoms of this element are present?
Data: MM (AI) = 27 g mol-1
Number of avogadro = 6.02 x 10²³
Moles (mol) = mass (g) / molar mass (g/mol)
Mass of Al is given as 150 g.
Hence, moles of Al = 150 g / 27 g/mol = 5.56 mol
According to the Avogadro number, 1 mole of substance has 6.02 x 10²³ of particles.
Hence, 1 mole of Al = 6.02 x 10²³ of Al atoms
Then, atoms in 5.56 mol of Al = 6.02 x 10²³ mol⁻¹ x 5.56 mol
= 3.34712 x 10²⁴
Hence, 150 g of Al have 3.34712 x 10²⁴ of atoms.
Ответ: