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
ycow [4]
2 years ago
13

What is the relative atomic mass of an element

Chemistry
1 answer:
Gennadij [26K]2 years ago
4 0

Answer:

20.2 amu.

Explanation:

Let A represent isotope ²⁰X

Let B represent isotope ²²X

From the question given above, the following data were obtained:

For Isotope A (²⁰X):

Mass of A = 20

Abundance (A%) = 90%

For Isotope B (²²X):

Mass of B = 22

Abundance (A%) = 10%

Relative atomic mass (RAM) =?

The relative atomic mass (RAM) of the element can be obtained as follow:

RAM = [(Mass of A × A%)/100] + [(Mass of B × B%)/100]

RAM = [(20 × 90)/100] + [(22 × 10)/100]

RAM = 18 + 2.2

RAM = 20.2 amu

Thus, relative atomic mass (RAM) of the element is 20.2 amu

You might be interested in
Please help :( I don’t understand this question
Karolina [17]

Answer:

A...................................

8 0
2 years ago
Read 2 more answers
A solution of hydrocloric acid has a molarity of 2.25 M HCl. If a reaction requires 5.80 g of HCI, what
Natali [406]

Answer:

0.071L

Explanation:

From the question given, we obtained the following data:

Molarity of HCl = 2.25 M

Mass of HCl = 5.80g

Molar Mass of HCl = 36.45g/mol

Number of mole of HCl =?

Number of mole = Mass /Molar Mass

Number of mole of HCl = 5.8/36.45 = 0.159mole

Now, we can obtain the volume required as follows:

Molarity = mole /Volume

Volume = mole /Molarity

Volume = 0.159mole/ 2.25

Volume = 0.071L

4 0
3 years ago
Convert 2020 mL to liters
Daniel [21]

Answer:

2.02

Explanation:

5 0
3 years ago
Read 2 more answers
Which catalyzed reaction breaks up ozone? 2H2O2(l) right arrow with upper M n upper O subscript 2 above it. 2H2O(l) + O2 O3 + O
anyanavicka [17]

Answer: B

Explanation: The answer is B

6 0
3 years ago
Read 2 more answers
How can scientists determine what kind of atoms are in stars and nebulas?
statuscvo [17]
Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its composition based on these wavelengths.
Not sure if this is 100% but I hope it helps.
4 0
2 years ago
Other questions:
  • Use the specific heat capacity that you calculated for granite to determine how many grams of granite at the initial temperature
    15·1 answer
  • 5 Points
    6·2 answers
  • Which celestial object is found in kuiper belt
    6·1 answer
  • What is the correct equilibrium constant
    14·2 answers
  • A mole of Big Macs stacked would reach from the earth to the moon and back how many times?
    5·1 answer
  • At the same temperature, a freshwater lake frezzes but a salt water bay does not because
    11·1 answer
  • The noble gases can be found in group/period ____
    11·2 answers
  • What is the ground-state electron configuration of chlorine and the number of valence electrons in it?
    10·1 answer
  • **PLEASE HELP** If you were presented with a preserved brain specimen, but weren’t told whether it was from a human or a sheep,
    6·1 answer
  • Which statement is true regarding the function of a catalyst in a chemical reaction?.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!