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
seropon [69]
3 years ago
14

Hypothetical element X has 3 stable isotopes. The relative peak intensities are 79.52 for 180.0 u, 100.0 for 184.0 u, and 82.98

for 186.0 u. What is the average atomic mass for X
Chemistry
1 answer:
vazorg [7]3 years ago
3 0

Answer:

The relative atomic mass of X is 183.4

Explanation:

The relative atomic mass of an element is the weighted average of the masses of the isotopes using the carbon-12 atom has a mass of exactly 12 units as as a standard.

The relative sizes of the peaks gives a direct measure of the relative abundances of the isotopes. The tallest peak is often given an arbitrary height of 100 and is known as the base peak.

To calculate the relative atomic mass of the element X which has 3 stable isotopes with the relative peak intensities as given below:

79.52 for 180.0 u, 100.0 for 184.0 u, and 82.98 for 186.0 u, the sum of the products of the relative peak intensity of each isotope and their isotopic mass is divided by the sum of the peak intensities.

Relative atomic mass of X = (79.52 × 180) + (100 × 184.0) + (82.98 × 186)/(79.52 + 100 + 82.98)

Relative atomic mass of X = (14313.6 + 18400 + 15434.28)/(262.5)

Relative atomic mass of X = 48147.88/262.5 = 183.4

Therefore, the relative atomic mass of X is 183.4

You might be interested in
Sodium oxide reacts with water to make sodium hydroxide.
Vlada [557]

Answer:

So the total mass is 50 plus 150 grams the heat capacity 4.18 joules per gram per degree C. And the temperature change is 36 minus 25 and so we can calculate Delta H for the reaction that takes place.

Explanation:

3 0
3 years ago
Can some tell me plz
valentina_108 [34]

Answer: stay the same because it's a solid.

Explanation:

5 0
3 years ago
Read 2 more answers
Item 4
Mariulka [41]

Answer:

c

Explanation:

8 0
3 years ago
The mixture which contains elements only is (a) air (b) brass (c) mineral water (d) seawater
Sholpan [36]

Answer:

So yes! A mixture can contain just elements if those elements are not chemically reactive to one another. Air is a great example of an elemental mixture as it contains nitrogen, oxygen, and argon (along with some other compounds).

Explanation:

hope this helps you :)

4 0
3 years ago
Read 2 more answers
If earth did not rotate what would happen to the hlobal wind
Readme [11.4K]
It would probably stop moving. Earth has motion and we do do. without the world moving, there would be No wind at all.
8 0
3 years ago
Other questions:
  • 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
  • What is the pOH of a substance with a Hydrogen concentration of 3.45 x 10-9. suppose to be a small 9
    8·2 answers
  • Find the percentage compositions<br> CaCl2<br> Ca:<br> CI:
    7·1 answer
  • Explain how the Octet Rule would say that the elements of potassium and chlorine would react.
    14·1 answer
  • In a laboratory, bunsen burner is used to increase the temperature of lime from 10 °C to 50 °C with the thermal energy of 80000
    6·1 answer
  • The Heat of vaporization for NH3= 1360 J/g. Calculate the quantity of heat energy (in kJ)
    6·1 answer
  • The formula for bismuth(III) arsenide is..?
    7·1 answer
  • Convert each of the measurements given to the new unit stated using the factor label method (dimensional analysis). Show all wor
    6·1 answer
  • Part c
    13·1 answer
  • Determine the percent yield forthe reaction between 82.4 g of Rband 11.6 g of O2 if 39.7 g of Rb2Ois produced
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!