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
o-na [289]
4 years ago
15

Element “yellowium” has three naturally occurring isotopes. Below are the masses and relative abundance of each isotope. Find th

e average atomic mass of yellowium. yellowium-15 15.012 amu 14.23% yellowium-17 16.988 amu 33.48% yellowium-19 19.177 amu 52.29%
Chemistry
1 answer:
katrin [286]4 years ago
3 0
To find average atomic mass, multiply each isotope's atomic mass with its relative abundance and add it all up.

15.012*0.1423 + 16.988*0.3348 + 19.177*0.5229 = 17.851 (5 s.f.)
You might be interested in
can anyone answer these questions? this is due today so if anyone can help that’d be greatly appreciated
Olegator [25]

Answer:

5. Please Kemi, be careful not to place your feet on the lava flowing down from the mountain.

6. A Ore canbe defined as a natural solid material gotten from the earth,  which a metal or valuable mineral can be extracted from.

7. Diamond.

8. Fracture

9. Molten Magma

10. Natural

11. In-organic

12. Solid

13. Crystal structures

14. Definite Chemical Composition

15. Metallic

16. Non-Metallic

17. Energy Minerals

Explanation:

3 0
3 years ago
Many grams of aluminum are required to produce 3.5 moles Al2O3 in the presence of excess O2?
Aleks [24]
The  grams  of aluminum  that are required   to produce  3.5  moles of AlO3  in  presence of excess O2   is calculated as  below

write  the  equation for reaction
4 Al + 3O2 =2 Al2O3

by use of mole  ratio between  Al  to  Al2O3   which  is  4 :2  the moles of  Al 
=3.5 x4/2 = 7  moles

mass of Al  =  moles /   x molar mass

= 7 moles  x27 g/mol  =189  grams

4 0
3 years ago
Helium gas in a cylinder is under 1.12atm pressure at 25.0C. What will be the pressure if the temperature increases to 37.0C?
Irina18 [472]

Answer:

p_2=1.17atm

Explanation:

Hello!

In this case, considering that the Gay-Lussac's law allows us to relate the temperature-pressure problems as directly proportional relationships:

\frac{p_2}{T_2} =\frac{p_1}{T_1} \\\\

Thus, for the initial pressure and temperature in kelvins the final temperature in kelvins, we compute the final pressure as:

p_2=\frac{p_1T_2}{T_1} \\\\p_2=\frac{1.12atm*310.15K}{298.15K}\\\\p_2=1.17atm

Best regards!

7 0
3 years ago
Which of the following tool components is unlikely to present a hazard
nydimaria [60]

Gloves is the tool component which will unlikely present a hazard in this scenario.

<h3>What is Hazard?</h3>

This is referred to as potential source of harm when performing various types of activities.

Gloves will unlikely cause harm as it is used to prevent the risk of electric shock when handling electrical devices which is why it is the most appropriate choice.

Read more about Hazard here brainly.com/question/7310653

#SPJ1

6 0
2 years ago
Which is not a physical property?
ahrayia [7]

Boiling point is the only answer that doesn’t have to do with their physical property

6 0
3 years ago
Read 2 more answers
Other questions:
  • Express the following concentration of solution in terms of molarity: 3.00 L of solution contains 1.75 mol of solute.
    5·1 answer
  • Which phase occurs between the solid and vapor phase
    6·1 answer
  • Which type of fermentation produces CO2 bubbles in baking?
    12·1 answer
  • 6. Which of the following statements is not true for an astronomical unit?
    5·2 answers
  • Help please !!!
    8·1 answer
  • All of the elements in the actinide family are ?<br> (liquids/radioactive).
    13·2 answers
  • Which of the following statements is true about what happens in all chemical reactions? A. The ways in which atoms are joined to
    6·1 answer
  • What evidence supports conservation of matter?
    10·1 answer
  • What would be the mass of 3 moles of water molecules?
    9·2 answers
  • At which temperature is water in its gas phase (water vapor)?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!