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
Dmitriy789 [7]
3 years ago
15

What is the atomic mass of an element if 4.00 grams of it contains 2.98x1022 atoms ?

Chemistry
2 answers:
Klio2033 [76]3 years ago
5 0

Answer:

Atomic mass of the element = 80.80 amu

Explanation:

Given:

Mass of element = 4.00 g

No. of atoms = 2.98\times 10^{22}

mol = \frac{No.\ of\ atoms}{Avogadro's\ no.}

Avogadro's no. = tex]6.02\times 10^{23}[/tex]

mol = \frac{No.\ of\ atoms}{Avogadro's\ no.}

=\frac{2.98\times 10^{22}}{6.02\times 10^{23}} = 0.0495\ mol

Formula for moles in the terms of mass and atomic mass

mol = \frac{Mass\ in\ g}{Atomic\ mass} \\Atomic\ mass = \frac{Mass\ in\ g}{mol}

Atomic mass of the element = \frac{4.00}{0.0495} = 80.80\ amu

Atomic mass of the element = 80.80 amu

Sergeu [11.5K]3 years ago
3 0
Hope this helps you.

You might be interested in
It takes much less energy to change the temperature of oil than it does to change the temperature of water
Andrew [12]

Answer:

i think so

Explanation:

8 0
2 years ago
Which is true regarding the penetrating power of radiation?
11Alexandr11 [23.1K]

Gamma radiation have the most penetrating power. It can penetrate through human body, aluminum and other metals. It can be stopped by lead. Hence, the radioactive waste are stored in lead container for safety purposes. The beta ray has more penetrating power than the alpha but less than gamma. The beta radiations can be stopped by aluminum. The alpha radiations have least penetrating power and it can be stopped by human hands.

8 0
3 years ago
2. All metals are good conductors because their electrons can
dsp73

Answer: An insulator would be made out of material unable to conduct electricity due to lack of fluid movement for electrons, such as rubber. Rubber properties not only prevents them from freely moving, but also helps electrons stay tightly bound to each other.

Hope this helps ^_^

4 0
3 years ago
Determine if the equation is endothermic or exothermic examples
Fittoniya [83]
There are a couple of ways todetermine if a reaction is exothermic or endothermic. Endothermic meaning that heat is added to the reaction to make the reactants interact and exothermic meaning heat is released during the reaction between the two reactants.


In endothermic reactions you can find a triangle above the arrow.
6 0
3 years ago
What is used to calculate volts
Nitella [24]
A multiplication formula
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the calculated value of the cell potential at 298K for an
    12·1 answer
  • How does Earth's rotation axis cause seasons to change?
    6·1 answer
  • How does Pressure affect the solubility of gases?
    10·1 answer
  • Pipettes are used when measuring the volumes of liquids with high degree of precision. The following volumes were obtained durin
    14·1 answer
  • How does gentrification work ?
    12·1 answer
  • What states of matter were present when pure water reached its boiling point
    11·1 answer
  • What happens to valence electrons when a covalent bond forms?
    6·1 answer
  • Please help me out with this question
    5·2 answers
  • 1. Why is the timing of tides predictable?
    5·1 answer
  • Children have rights in order to ___________________________​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!