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
Nataly [62]
2 years ago
9

Magnesium has three stable isotopes. One has 12 neutrons the second has 13 and the third has 14. Which one is the most abundant?

How do you know?
Chemistry
1 answer:
fiasKO [112]2 years ago
7 0

Answer:

12

Explanation:

If you look at the periodic table, you can see that magnesium has an atomic mass of 24.305.  Subtract the number of protons from this to get neutrons.

24.305 - 12 = 12.305

12.305 is the average amount of neutrons a magnesium atom can have.  A magnesium atom can have 12, 13, or 14 neutrons.  The average, based on the natural abundance, is 12.305.  To find which isotope is more abundant, you need to pick the number that is closest to the average.  This would make the most abundant isotope the one with 12 neutrons.

You might be interested in
Relating ideas explain why ionic crystals melt at much higher temperatures than typical covalent molecular crystals.
gayaneshka [121]
Because of the way the temp is set up
6 0
3 years ago
If the frequency of a wave is 68 hertz then the period of the wave is going to be
tigry1 [53]
The answer is 4.41x10^1 m.

Explanation:

You would use this formula to calculate it
λ = C/f

Where,

λ (Lambda) = Wavelength in meters

c = Speed of Light (299,792,458 m/s)

f = Frequency

So we have the frequency, 68 Hz, and we have the speed of light. Now we put it into the equation and it will look like this:


λ= (299,792,458 m/s) / (68 Hz)

λ= 4.41x10^1


6 0
2 years ago
Read 2 more answers
Which of the following has the highest pH?
Tema [17]

Answer:

D

Explanation:

pH=-log(x)

x=0.001M,pH=3

x=0.01M,pH=2

x=0.1M,pH=1

x=1M,pH=0

Highest pH is for option D

7 0
2 years ago
Read 2 more answers
The chart below shows examples of solids, liquids, gases, and plasma.
spin [16.1K]
The word that is in an incorrect place in the chart is HAIL.
The state of matter of hail is not plasma; hail is a solid at room temperature. Plasma refers to the state of matter in which an ionized gas have approximately equal number of positively and negatively charged ions. Thus, plasma is an ionized gas. Plasma is considered to be the fourth state of matter.  <span />
4 0
2 years ago
Read 2 more answers
Which of the following occurs when an electron moves from a higher energy shell to a lower energy shell?
AlexFokin [52]
When an electron moves from a higher energy shell to a lower one, energy in the form of light, more specifically a wavelength of a photon is released.
7 0
3 years ago
Other questions:
  • The microwaves in an oven are of a specific frequency that will heat the water molecules contained in food. (This is why most pl
    15·1 answer
  • Is the reaction of sodium bicarbonate with hydrochloric acid endothermic or exothermic?
    8·1 answer
  • You add 4.7 gg iron to 27.10 mL of water and observe that the volume of iron and water together is 27.70 mLmL . Calculate the de
    6·1 answer
  • Which element is in group 2 and period 7 of the periodic table
    5·1 answer
  • A mixture of gases with a pressure of 800.0 mm hg contains 60% nitrogen and 40% oxygen by volume. what is the partial pressure o
    5·1 answer
  • Describe the particles that make up a pure substance
    10·1 answer
  • Given the atomic weights of carbon, 12.01; hydrogen, 1.01; and oxygen, 16.0, what is the molar mass of glucose?
    7·2 answers
  • Help me pls <br> help me please<br> help me<br> help me please<br> help me pls
    8·1 answer
  • How are nitrogen-14 and nitrogen-15 same and different?
    11·1 answer
  • How can water change? I or change into a If 1-Heat causes water toi 2-Water that goes into the alr is called tral air makrs wate
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!