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
artcher [175]
3 years ago
15

A sample of aluminum foil contains 7.90 x 10^23 atoms. What is the mass of the foil?

Chemistry
1 answer:
Zanzabum3 years ago
4 0

Answer:

35.3 g

Explanation:

Step 1: Given data

Number of atoms of aluminum: 7.90 × 10²³ atoms

Step 2: Calculate the number of moles corresponding to 7.90 × 10²³ atoms of aluminum

We will use Avogadro's number: there are 6.02 × 10²³ atoms of aluminum in 1 mole of atoms of aluminum.

7.90 × 10²³ atoms × (1 mol/6.02 × 10²³ atoms) = 1.31 mol

Step 3: Calculate the mass corresponding to 1.31 moles of aluminum

The molar mass of Al is 26.98 g/mol.

1.31 mol × 26.98 g/mol = 35.3 g

You might be interested in
If gas is $4.00/gal, how much does it cost to travel from Portland, Maine, to Orlando, Florida (a distance of 1,500 mi)? Give yo
AlexFokin [52]

it cost $200 , the answer is not $6000

6 0
3 years ago
Read 2 more answers
Which of the following factors does not affect a reaction rate?
Natalka [10]
The correct answer is C
4 0
2 years ago
Can anyone explain dipoles in chemistry?
slavikrds [6]

Answer:

See explanation

Explanation:

A dipole refers to a bond in which its two ends have opposite charges. A dipole results from a large difference in electronegativity between two atoms in a bond.

For instance, consider the bond between hydrogen and chlorine in HCl. The electronegativity of hydrogen is 2.2 while that of chlorine is 3.16. The significant electronegativity difference between the two atoms leads to a charge separation.

A partial positive charge appears on the atom that is less electronegative (hydrogen) while a negative charge appears on the more electronegative atom (chlorine).

This charge separation occurs because the shared electrons of the bond are more closely attracted to chlorine making it partially negative compared to hydrogen. A dipole moment now exists in the H-Cl bond hence the molecule is said to have a dipole.

3 0
2 years ago
What is the correct noble gas configuration for Ba?
kvasek [131]
I think the answer is [Xe] 6s2
8 0
3 years ago
Which of the following is true about neutralization reactions? Question 6 options: They involve strong acids and strong bases. T
EastWind [94]
The correct option is: ALL OF THE ABOVE.
A neutralization reaction is one in which acid and base react together in order to produce salt and water. The water formed is as a result of hydrogen ion and the hydroxyl ion which combine together to produce water. When a solution is neutralized, it implies that the salt is formed from equal weights of acid and base.

7 0
3 years ago
Other questions:
  • D is none of the above
    11·2 answers
  • Joel has noticed that his engine is not compressing properly during the compression and ignition step. What problem will this po
    7·1 answer
  • Which is a correct set of values of m for one of the subshells of n = 2? –1, 0, 1 –1, –2, 0, 1, 2 –1, –2, –3, 0, 1, 2, 3 –1, –2,
    14·2 answers
  • Select the true statements about SDS‑PAGE, a method of separating proteins. Assume that SDS‑PAGE is performed under reducing
    10·1 answer
  • HELP ASAP
    5·1 answer
  • Which of the following is true when 1 M KCl is diluted to semi-molar KCl?
    5·1 answer
  • Which best represents the reaction of calcium and zinc carbonate (znco3) to form calcium carbonate (caco3) and zinc?
    5·2 answers
  • Please complete the sentence. A(n) __________________, a strainer, or a ladle can be used to separate the parts of a(n) ________
    8·2 answers
  • Warm air holds _____.
    5·1 answer
  • How can a chemical reaction be sped up?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!