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
Sav [38]
3 years ago
6

An element has five isotopes. Calculate the atomic mass of this element using the information below. Show all your work. Using t

he periodic table, identify the element this is likely to be and explain your choice. (18 pts)
A) Isotope 1 – mass: 64 amu; percent abundance: 48.89%
B) Isotope 2 – mass: 66 amu; percent abundance: 27.81%
C) Isotope 3 – mass: 67 amu; percent abundance: 4.11%
D) Isotope 4 – mass: 68 amu; percent abundance: 18.57%
E) Isotope 5 – mass: 70 amu; percent abundance: 0.62%
Chemistry
1 answer:
Katena32 [7]3 years ago
5 0

Answer: Sol:-

Data provided in the question is :-

Atomic mass of isotope -1 = 64 amu

Atomic mass of isotope -2 = 66 amu

Atomic mass of isotope -3 = 67 amu

Atomic mass of isotope -4 = 68 amu

Atomic mass of isotope - 5 = 70 amu

Percentage abundace of isotope - 1 = 48.89 %

Percentage abundance of isotope -2 = 27.81 %

Percentage abundance of isotope - 3 = 4.11%

Percentage abundance of isotope-4 = 18.57%

Percentage abundance of isotope - 5 = 0.62 %

Formula used :-

Average atomic mass of an element =[ {(atomic mass of isotope-1 * percentage abundance of isotope-1) + ( atomic mass of isotope-2 * percentage abundance of isotope -2) + ( atomic mass of isotope -3 * percantege abundance of isotope-3 ) + ( atomic mass of isotope-4 * percentage abundance of isotope-4) + (atomic mass of isotope-5 * percentage abundance of isotope-5)} / 100]

Calculation :-

Put all the value in the formula :-

Average atomic mass of an element = [{(64 * 48.89) + (66 * 27.81) + (67 * 4.11) + (68 * 18.57) + (70 * 0.62)} / 100] amu

= [{(3128.96) + (1835.46) +(257.37) + (1262.76) + (43.4)} / 100] amu

= {(6528.04) / 100} amu

= 65.2804 amu

Average atomic mass of an element is = 65.2804 amu

Then this mass is approximatly equal to atomic mass of zinc so this element would be zinc

atomic mass of zinc = 65.38 \approx 65.2804 amu

You might be interested in
Which is the larger atom S or Mg
Vadim26 [7]

Answer:

Mg

Explanation:

If one were comparing just the neutral atoms Mg and S, the S atom would be smaller as both elements are in the same period and sulfur is more to the right

8 0
3 years ago
What is the density if<br> a sample of rock has a mass of 69<br> g and a volume of<br> 23<br> ml?
kiruha [24]
Density = mass / volume

= 69g / 23 ml

= 3 g / ml.

Thus, the density of the sample is 3 grams per ml or 3g/ ml
4 0
3 years ago
Read 2 more answers
What does reaction b tell you about the type of molecule h2co3 is?
irinina [24]
H2o means water and co3 is co-signs
6 0
3 years ago
As the water molecules re-freeze, what happens to the salt ions that are mixed in with the water?
Murljashka [212]

Answer:

Explanation:

Since salt is composed of two ions Na+ and Cl- it will attract to the opposite poles of the water and form a ion-dipole bond. This will cause the phenomenon freezing point depression where as the name states it will take a lower tempertature to freeze it. So instead of freezing at 0 degrees c it will freeze at a negative 2 or so on.

5 0
3 years ago
Tudy the image above. Which statement below best explains the steps of tornado formation?
Reil [10]

C) Step 1: a horizontal spinning effect is formed from wind shear

Step 2: warm rising air shifts the horizontal rotation to a vertical rotation

Step 3: the vertical rotation expands and extends

7 0
3 years ago
Other questions:
  • Calculate the amount of heat required to completely sublime 96.0 g of solid dry ice (co2) at its sublimation temperature. the he
    7·1 answer
  • g A molecule with 6 areas of electrons (6 electrons domains) consisting of 4 bonding domains and 2 non-bonding domains will have
    15·1 answer
  • Is plastic a homogenous mixture
    6·2 answers
  • How is enthalpy used to predict whether a reaction is endothermic or exothermic? when the enthalpy of the reactants is higher th
    8·2 answers
  • Which is not true about enantiomers?
    11·1 answer
  • On a drawing showing the movement of a kickball, you see an arrow above the ball labeled "10 m/s" and the arrow shows BOTH the s
    7·2 answers
  • 3.) <br><br> Please answer this question!
    14·1 answer
  • How many atoms are contained in 3.46 moles of magnesium
    11·1 answer
  • The reaction of iron (III) oxide with carbon monoxide produces iron and carbon dioxide.
    7·1 answer
  • Which one is bigger proton or atom
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!