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
Kamila [148]
3 years ago
10

You discover some bones that have roughly %s as much carbon-14 in them as

Chemistry
2 answers:
Misha Larkins [42]3 years ago
7 0

Answer:

If a fossil bone is found to contain 1/8th as much Carbon-14 as the bone of a living animal, what is the approximate age of the fossil?(half-life of C-14 = 5800 years)

Explanation:

Dafna1 [17]3 years ago
4 0

Answer:

150 years i guess so? im nkt sure

You might be interested in
Copper metal has a specific heat of 0.385 J/goC. Calculate the amount of heat required to raise the temperature of 22.8 g of Cu
Liula [17]

Answer is equal to 7.51 kJ

Q=mc(delta)T

4 0
2 years ago
Can someone answer all please.
boyakko [2]

Answer:

poszukaj w necie , proszę a nie prosisz innych o gotowca

8 0
3 years ago
Select the three characteristics that best describe a STEM-educated student.
Lemur [1.5K]
Innovated Understanding Curious Logical
5 0
3 years ago
Read 2 more answers
A 100.0 mL solution containing 0.864 g of maleic acid (MW=116.072 g/mol) is titrated with 0.276 M KOH. Calculate the pH of the s
Lilit [14]

Answer:

pH = 1.32

Explanation:

                 H₂M + KOH ------------------------ HM⁻ + H₂O + K⁺

This problem involves a weak diprotic acid which we can solve by realizing they amount  to buffer solutions.  In the first  deprotonation if all the acid is not consumed we will have an equilibrium of a wak acid and its weak conjugate base. Lets see:

So first calculate the moles reacted and produced:

n H₂M = 0.864 g/mol x 1 mol/ 116.072 g  =  0.074 mol H₂M

54 mL x  1L / 1000 mL x 0. 0.276 moles/L = 0.015 mol KOH

it is clear that the maleic acid will not be completely consumed, hence treat it as an equilibrium problem of a buffer solution.

moles H₂M left = 0.074 - 0.015 = 0.059

moles HM⁻ produced = 0.015

Using the Henderson - Hasselbach equation to solve for pH:

ph = pKₐ + log ( HM⁻/ HA) = 1.92 + log ( 0.015 / 0.059) = 1.325

Notes: In the HH equation we used the moles of the species since the volume is the same and they will cancel out in the quotient.

For polyprotic acids the second or third deprotonation contribution to the pH when there is still unreacted acid ( Maleic in this case) unreacted.

           

3 0
3 years ago
Quiz time!
kykrilka [37]

potassium belongs to group IA of the periodic table.

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the ratio of oxygen atoms to carbon atoms when 32 g of oxygen combine with 12 g of carbon?
    15·1 answer
  • Two springs with spring constants k1 and k2 are connected together. With mass m1 attached, the springs have
    15·1 answer
  • Dehydration of 2-methyl-2-pentanol forms one major and one minor organic product. Draw the structures of the two organic product
    7·1 answer
  • Which example does not involve knowledge of chemistry?
    13·2 answers
  • A tissue sample at 275 K is submerged in 2 kg of liquid nitrogen at 70 K for cryopreservation. The final temperature of the nitr
    10·1 answer
  • How can you test the complete separation of camphor and sand​
    13·2 answers
  • A substance is tested and is found to have the following physical qualities:
    13·1 answer
  • Write a sentence for the following equation: HCI (aq) + NaOH(aq) --&gt; NaCl<br> (aq) + H2O(l)
    11·1 answer
  • A sample of chlorine gas is stored at a temperature of -25oC. If the chlorine gas's temperature is raised to 52oC, its volume in
    6·1 answer
  • How does the reactivity of nonmetals change as you move from left to right across the periodic table?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!