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
elena-14-01-66 [18.8K]
3 years ago
15

How can you efficiently determine the number of atoms in a sample of an element?

Chemistry
1 answer:
nata0808 [166]3 years ago
3 0

Answer:

b. First determine the mass of the sample and then convert it to the number of atoms using Avogadro's number and the molar mass of the element.

Explanation:

a. First determine the mass of the sample and then convert it to the number of atoms using the molar mass of the element.  <em>FALSE. </em>As the mass is in grams and molar mass is in g/mol. This result in the moles of each element, not its number of atoms.

b. First determine the mass of the sample and then convert it to the number of atoms using Avogadro's number and the molar mass of the element.  <em>TRUE. </em>Mass and molar mass will result in moles of element. These moles could be converted in number of atoms using Avogadro's number that is in # atoms per mole.

c.Use atomic microscope to determine Avogadro's number, then determine the mass of the sample and convert it to the number of atoms.  <em>FALSE. </em>An atomic microscope is not used to determine Avogadro's number.

d.Use atomic microscope to count each atom. <em>FALSE. </em>There is not possible to count every single atom in an element. There are more atoms in a drop of water than stars in the sky.

I hope it helps!

You might be interested in
Which of the following is ONE of the signs of a chemical change
pickupchik [31]

Answer:

um i one of what?

Explanation:

6 0
2 years ago
Read 2 more answers
Is a compound a metal or non metal
VARVARA [1.3K]

Answer:

Compounds between Nonmetals and Nonmetals

Compounds that consist of a nonmetal bonded to a nonmetal are commonly known as Molecular Compounds, where the element with the positive oxidation state is written first. In many cases, nonmetals form more than one binary compound, so prefixes are used to distinguish them.

3 0
3 years ago
The thin muscular wall that separates the right side of the heart from the left side is called the​
Lina20 [59]
The upper chambers are called the left and right atria, and the lower chambers are called the left and right ventricles. A wall of muscle called the septum separates the left and right atria and the left and right ventricles
8 0
2 years ago
A sentence for desert
Tanya [424]
He knew he was in the desert when he saw the dust blowing and a cactus. /// He was trying to desert the field in which was dangerous.
5 0
2 years ago
Read 2 more answers
A map here shows the motion of a tectonic plate off the coast of the western united states. Which evidence supports the theory o
notsponge [240]

Answer:

Fossils, the shape of continents, the mid-ocean ridge system, sea floor sediment deposits, and the magnetism of rocks.

Explanation:

Fossils, the continent's shape, the mid-ocean ridge system, sea floor sediment deposits, and the magnetism of rocks on the sea floor are the evidences that support the theory of plate tectonics in the area. Fossils provides information to us when and where plants and animals once existed. Due to diverging plates, some life became isolated, and evolved into new species. Continental ‘fit’ through coastline matching. Some division of continents look as though they should fit together, e.g. South America and Africa.

7 0
2 years ago
Other questions:
  • According to the VSEPR model, the progressive decrease in the bond angles in the series of molecules CH4, NH3, and H2O is best a
    14·1 answer
  • An atom's valence electrons are located in the atom's outermost energy level, true or false?
    9·2 answers
  • Mangrove trees are affected by several factors. Which is an abiotic factor contributing to the energy cycle of a mangrove ecosys
    15·1 answer
  • Use the periodic table to identify the molar mass of each element below. Answer without doing any calculations.
    14·2 answers
  • It usually takes Vaughn 12 minutes to drive to school. She drives an average of 50.0 miles per hour. What is the distance from s
    5·1 answer
  • Which equations represent precipitation reactions?
    7·1 answer
  • If you had a list of ionic and covalent compounds, how you would be able to tell them apart and come up with a proper name?
    14·1 answer
  • I know the paper is blurry but can anyone explain any of the questions from 76-80?
    9·1 answer
  • HELP ASAP!!!!!!!
    9·1 answer
  • It's actually Science but I didn't find it.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!