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
Bezzdna [24]
2 years ago
5

The half-life of tritium (h) is 12 years. How long does it take for 16. 0 ng of tritium to decay to the point where 2. 0 ng rema

ins?
Chemistry
1 answer:
kumpel [21]2 years ago
6 0

Answer:

36 years

Explanation:

2 =  16   *   (1/2)^n          where n is the number of half lives

2/16 = (1/2)^n

1/8 =  (1/2)^n

log (1/8)  = log (1/2^n)

log(1/8) =  n log (1/2)

log ( 1/8 ) / log(1/2) = n = 3  half lives

each half life is 12 years    so  3 * 12 = 36 years      

You might be interested in
The density of water at 4 degrees Celsius is 1.00 g/cm cubed at unknown object has density of 7.9 g/cm cubed would you expect it
NNADVOKAT [17]

Answer:

The object will be sank

Explanation:

In this case the object is more dense than water.

Density is the relationship between a certain amount of mass of matter and the volume that is being occupied by it.

The object occupies more volume, so it occupies more mass.

As the mass from the object is higher, the object will be sank because the weight is higher than the weight from the liquid.

If the object has a lower density than the water, it will float on it.

7 0
3 years ago
Which of these changes occurs during a nuclear change?
Andrews [41]
The correct answer is D. Elements are created that differ from the reactants.. Because in a eeaction, the product is different than the reactants. Take NaCl for example.
7 0
3 years ago
HELPPP MEEEEE!!!POR FAVOR
ikadub [295]

Answer:

A.

Explanation:

hope it helps...

4 0
3 years ago
What does osmosis depend on? A. the identity of the solute and solvent B. how much solvent is present in the solution C. the num
KengaRu [80]

Osmosis is a special kind of diffusion where solvent particles move through a semi permeable membrane from low concentration of solute to high concentration of solute.

so it depends upon

a) how much solvent is present : More the solvent on one side of semipermeable membrane more the movement of solvent particles on the other side of membrane


6 0
3 years ago
Which of the following describes the arrangement of valence electrons in a bond between H and F?
Sloan [31]
C; The Valence electrons spend more time around the atom of F
6 0
3 years ago
Other questions:
  • At this pressure, how many molecules of air would there be in a 20 ∘C experimental chamber with a volume of 0.020 m3 ?
    5·1 answer
  • What are the two parts of a phospholipid
    10·1 answer
  • Outer and inner planets are different in ----- and ------ (also known as what they are made from) a. size and compasion b. lumin
    14·1 answer
  • The temperature –60 °C is higher than –60 °F.
    14·2 answers
  • The total momentum of a group of objects remains________ unless outside forces act on the group.
    6·1 answer
  • 25.5 g of methane burns in the combustion reaction below. How much water is produced in this reaction
    10·1 answer
  • Please help!!!!
    15·2 answers
  • I don't know what to do about this now. I like her a lot; I don't want to just give up on this because I see relationship potent
    14·2 answers
  • Why do we need to do all our comparisons at the same temperature and pressure?
    6·1 answer
  • Calculate each of the following quantities:<br> (c) Mass (g) of 5.85 mol of glycerol (C₃H₈O₃)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!