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
sertanlavr [38]
3 years ago
13

The two naturally occuring isotopes of antimony are 121Sb (57.21%) and 123Sb (42.79%), with isotopic masses of 120.904 and 122.9

04 u, respectively. Compute the average atomic weight of naturally occurring antimony.
Chemistry
1 answer:
emmasim [6.3K]3 years ago
5 0

Answer:

The average atomic weight = 121.7598 amu

Explanation:

The average atomic weight of natural occurring antimony can be calculated as follows :

To calculate the average atomic mass the percentage abundance must be converted to decimal.

121 Sb has a percentage abundance of 57.21%, the decimal format will be

57.21/100 = 0.5721 . The value is the fractional abundance of 121 Sb .

123 Sb has a percentage abundance of 42.79%, the decimal format will be

42.79/100 = 0.4279. The value is the fractional abundance of 123 Sb .

Next step is multiplying the fractional abundance to it masses

121 Sb = 0.5721 × 120.904 = 69.169178400

123 Sb = 0.4279 × 122.904 = 52.590621600

The final step is adding the value to get the average atomic weight.

69.169178400 + 52.590621600 = 121.7598 amu

You might be interested in
What volume will 50.2 grams of co2 (g) occupy at stp?
Genrish500 [490]
Number of moles of CO2 =
Mass /Ar
= 50.2 / (12 + 32)
1.14 mols

For every 1 mol of gas, there will be
24000 cm^3 of gas

Vol. = 1.14 x 24 dm^3
= 27.36 dm^3
8 0
3 years ago
PLS HELP A gas has a volume of 250 mL at 96.5 kPa. What will the pressure of the gas be if the
ella [17]

Answer:

Solve the following problems (assuming constant temperature). Assume all numbers are 3 sig figs. 1. A sample of oxygen gas occupies a volume of 250 mL at 740 torr pressure. ... the gas exert if the volume was decreased to 2.00 liters? ... A 175 mL sample of neon had its pressure changed from 75.0 kPa to 150 kPa.

Explanation:

8 0
3 years ago
Help please fast as possible I’ll mark you brainlist
Sergeeva-Olga [200]

Answer:

As mass increases the gravitational force increases

Explanation:

Things with mass gain a gravitational force, The bigger they are the more force, for example: the sun is the biggest so it pull us

7 0
3 years ago
What are some ways to eliminate waste
Margaret [11]

Answer:

use following methods

Explanation:

  • Recycling the waste
  • segregation and dumping in right place
  • practice 4 R's
  • practice waste Management
  • reduce using undegredable waste like plastic bags

4 0
2 years ago
A 23.6 ml of slat water has a mass of 26.47 grams. calculate its density.
bija089 [108]

The density is 1.12161 g/ml

7 0
2 years ago
Other questions:
  • Which medium allows sound to travel faster, air or water?
    6·2 answers
  • Explain the similarities and differences between a 1M solution of NaOH and a 1m solution of NaOH
    14·1 answer
  • How is using a bow and arrow mechanical and potential energy?
    10·2 answers
  • Why would it be difficult to sift the iron fillings from the sand
    7·1 answer
  • The first law of thermodynamics is observed when
    14·1 answer
  • What is the pH of a 0.00530 M solution of HCI?
    8·1 answer
  • ☆Only need information for problem 3 but you need to know the information from problem 2 to get answer 3☆
    11·1 answer
  • How is the kinetic energy of the particles that make up a substance different after is changes state
    12·1 answer
  • Energy from the sun is absorbed by ____
    9·1 answer
  • 1. Atomic mass of 12 and 6 neutrons what is the atomic number?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!