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
AleksandrR [38]
3 years ago
14

PLEASE HELP this is physical science.

Chemistry
1 answer:
Andru [333]3 years ago
6 0

Bone age : 22,920 years

<h3>Further explanation</h3>

Given

Nt = 2.5 g C-14

No = 40 g

half-life = 5730 years

Required

time of decay

Solution

General formulas used in decay:  

\large{\boxed{\bold{N_t=N_0(\dfrac{1}{2})^{t/t\frac{1}{2} }}}

t = duration of decay  

t 1/2 = half-life  

N₀ = the number of initial radioactive atoms  

Nt = the number of radioactive atoms left after decaying during T time  

Input the value :

\tt 2.5=40.\dfrac{1}{2}^{t/5730}\\\\\dfrac{2.5}{40}=\dfrac{1}{2}^{t/5730}\\\\(\dfrac{1}{2})^4=\dfrac{1}{2}^{t/5730}\\\\4=t/5730\rightarrow t=22920~years

You might be interested in
PLEASE! I need help in chemistry. If you are good in chemistry, please send your gm^ail. I have a lab to send. But I am stuck. P
stiv31 [10]

Answer:

can you send the work off of here? what is the lab over?

6 0
3 years ago
What does continental drift and sea floor spreading have in common
Llana [10]

In the early 1900s, a scientist named Alfred Wegener noticed how the continents seem to fit together and developed the Theory of Continental Drift. Continental drift is the theory that continents can drift apart from one other and have done so in the past. Wegner's theory also explained why fossils of the same plant and animal species are found on both sides of the Atlantic Ocean. In addition similar types of rock and evidence of the same ancient climatic conditions are found on several continents.

Wegner hypothesized that all the separate continents of today were once joined in a single landmass that he called Pangaea.

8 0
3 years ago
Two processes of plant reproduction are described below.
Stells [14]

Answer:

Process 1 is pollination and Process 2 is germination

Explanation:

Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma. The goal of every living organism, including plants, is to create offspring for the next generation. One of the ways that plants can produce offspring is by making seeds.

Germination refers to the process by which an organism grows from a seed or a spore. The most common forms of germination include a seed sprouting to form a seedling and the formation of a sporeling from a spore. Thus, germination occurs primarily in plant and fungal species.

I hope this help :)

good luck

6 0
3 years ago
Read 2 more answers
The molecule CH20 contains two single bonds and one double bond.<br> True<br> False
dem82 [27]

Answer:

True

Explanation:

The molecule CH20 contains two single bonds and one double bond.

6 0
3 years ago
The solubility product of AgCl is 1.4 x 10-4 at 100°C. Calculate the solubility of AgCl in
marshall27 [118]

Answer:

AgCl=Ag+ + Cl-

1.4×10^-4 =x × x

x²=1.4×10^-4

x=√(1.4×10^-4)

x=0.012

5 0
3 years ago
Other questions:
  • Is a electron found in a subtonic particles in a atomic nucleus
    13·1 answer
  • Which conditions are necessary for a lunar eclipse to occur?
    6·2 answers
  • Describe the procedure Bourouiba uses to study sneezes.
    14·1 answer
  • An aqueous solution of 1.29 M ethanol, CH3CH2OH, has a density of 0.988 g/mL. The percent by mass of CH3CH2OH in the solution is
    7·1 answer
  • If atoms are made of smaller parts suchas electrons, why are atoms considered thebasic unit of matter?
    14·2 answers
  • Some of the interrelated factors which affect polar ice are:
    12·2 answers
  • Identify two possible reasons for unemployment​
    5·2 answers
  • Girls are usually completely physically mature by _____ years old.
    14·2 answers
  • How is latitude related to temperature?
    14·1 answer
  • What are acids ? Will they harm skin
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!