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
lawyer [7]
3 years ago
9

The half life for the decay of carbon- is years. Suppose the activity due to the radioactive decay of the carbon- in a tiny samp

le of an artifact made of wood from an archeological dig is measured to be . The activity in a similar-sized sample of fresh wood is measured to be . Calculate the age of the artifact. Round your answer to significant digits.

Chemistry
1 answer:
EleoNora [17]3 years ago
6 0

The question is incomplete. The complete question is:

The half-life for the decay of carbon-14 is 5.73x10^3 years. Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of woodfrom an archeological dig is measured to be 2.8x10^3 Bq. The activity in a similiar-sized sample of fresh wood is measured to be 3.0x10^3 Bq. Calculate the age of the artifact. Round your answer to 2 significant digits.

Answer:

570 years

Explanation:

The activity of the fresh sample is taken as the initial activity of the wood sample while the activity measured at a time t is the present activity of the wood artifact. The time taken for the wood to attain its current activity can be calculated from the formula shown in the image attached. The activity at a time t must always be less than the activity of a fresh wood sample. Detailed solution is found in the image attached.

You might be interested in
U-238 has _____ protons and 146 neutrons
qaws [65]
U-238 
The number besides the U means its total molar mass. The molar mass of this element is 238
Molar mass= protons + neutrons
This means that 238= 146 + protons
Do 238 - 146
Answer is 92
6 0
3 years ago
Consider the reaction at 500 ° C 500°C . N 2 ( g ) + 3 H 2 ( g ) − ⇀ ↽ − 2 NH 3 ( g ) K c = 0.061 N2(g)+3H2(g)↽−−⇀2NH3(g)Kc=0.06
Sav [38]

Answer:

Q = 0.061 = Kc

Explanation:

Step 1: Data given

Temperature = 500 °C

Kc=0.061

1.14 mol/L  N2

5.52 mol/L H2

3.42 mol/L NH3

Step 2: Calculate Q

Q=[products]/[reactants]=[NH3]²/ [N2][H2]³

If Qc=Kc then the reaction is at equilibrium.  

If Qc<Kc then the reaction will shift right to reach equilibrium.

If Qc>Kc then the reaction will shift left to reach equilibrium.  

Q = (3.42)² / (1.14 * 5.52³)

Q = 11.6964/191.744

Q = 0.061

Q = Kc the reaction is at equilibrium.  

4 0
3 years ago
Write the molecular formula of nitrate using criss cross method <br><br><br><br>​
exis [7]

Answer:

NO3 that is the answer to the question

8 0
3 years ago
Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional
stiv31 [10]

Answer:

In 1851 gold-seekers from around the world began pouring into the colonies, changing the course of Australian history. The gold rushes greatly expanded Australia's population, boosted its economy, and led to the emergence of a new national identity.

Explanation:

3 0
2 years ago
Read 2 more answers
Good Afternoon all come here only for good friendship urv-ojze-yrq​
Jobisdone [24]

jelo person, all of the sudden i am not able to join

5 0
2 years ago
Read 2 more answers
Other questions:
  • Organize the following atoms according to increasing number of orbitals surround the nucleus: Rubidium (Rb), Phosphorus (P), Neo
    15·1 answer
  • One hundredth of a meter is called a
    12·1 answer
  • A compound has been shown to contain 14.5 percent hydrogen and 85.5 percent carbon by mass.
    7·1 answer
  • Is a substance that a filter can seperate into two parts a mixture or a pure substance?
    14·1 answer
  • Which equivalent factor should you use to convert from 4.28 * 10^19 molecules of oxygen to moles of O2
    13·1 answer
  • Help please !!!
    7·2 answers
  • How many minutes will it take for a car traveling 74 miles per hour to cover 6.50 kilometers?
    13·1 answer
  • The composition (in mole percent) of the atmosphere is 78.1% N2, 21.0% O2, and 0.9% Ar. What is the partial pressure of each gas
    9·1 answer
  • What is the molecular formula of a compound with the empirical SO and molecular weight 96.13?
    7·1 answer
  • Elemnt name, atomic number, atomic mass, protons, neutrons, elsctrons 1-10
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!