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
notsponge [240]
3 years ago
6

Choose the FALSE statement.

Chemistry
1 answer:
Mariana [72]3 years ago
5 0

Answer:

C. The half-life of C-14 is about 40,000 years.

Explanation:

The only false statement from the options is that the half-life of C-14 is 40,000yrs.

The half-life of an isotope is the time it takes for half of a radioactive material to decay to half of its original amount. C-14 has an half-life of 5730yrs. This implies that during every 5730yrs, C-14 will reduce to half of its initial amount.

  • All living organisms contain both stable C-12 and the unstable isotope of C-14
  • The lower the C-14 compared to the C-12 ratio in an organism, the older it is.
You might be interested in
The oxidation number of Na in NaCl a. 0 b. -1 c. +1 d. -2 e. +2
Dahasolnce [82]
NaCl:

Na = + 1

Cl = - 1

hope this helps!
4 0
3 years ago
Does anyone have the student exploration sheet answers for the Drug Dosage (Forensic Science) Gizmos lab?​
Novay_Z [31]

Answer:

sorry neither me ..........

8 0
3 years ago
An unknown substance has the following properties:
Anastasy [175]

Answer:

Homogenous mixture

Explanation:

Homogenous mixtures like ice cream appear to be uniform, and you cannot see their individual components.

6 0
3 years ago
Read 2 more answers
Determine the acid dissociation constant for a 0.0250 M weak acid solution that has a pH of 2.37 . The equilibrium equation of i
Oksanka [162]

Answer:

For part (a): pHsol=2.22

Explanation:

I will show you how to solve part (a), so that you can use this example to solve part (b) on your own.

So, you're dealing with formic acid, HCOOH, a weak acid that does not dissociate completely in aqueous solution. This means that an equilibrium will be established between the unionized and ionized forms of the acid.

You can use an ICE table and the initial concentration ofthe acid to determine the concentrations of the conjugate base and of the hydronium ions tha are produced when the acid ionizes

HCOOH(aq]+H2O(l]⇌ HCOO−(aq] + H3O+(aq]

I 0.20 0 0

C (−x) (+x) (+x)

E (0.20−x) x x

You need to use the acid's pKa to determine its acid dissociation constant, Ka, which is equal to

3 0
2 years ago
How do you obtain oxide from a mixture?
emmainna [20.7K]

By direct heating of an element with oxygen : many metals and non-. metals burn rapidly when heated in oxygen or air producing their oxides e.g.

3 0
3 years ago
Other questions:
  • Sort the phrases pertaining to pure substances and mixtures as either true or false.
    11·1 answer
  • Describes changes<br> in energy during a chemical reaction?
    5·1 answer
  • What is the greatest question facing the human race?
    12·2 answers
  • Complete the following equations
    11·1 answer
  • How does a nuclear reactor produce electricity
    10·1 answer
  • Difference between acids and bases in terms of ions
    8·2 answers
  • Which of the following elements would have the greatest attraction for
    10·1 answer
  • Identify the element that cannot participate in nuclear fission reactions. (Hint: Think about the size of the atom.)
    7·1 answer
  • I am so confused that i don't even understand how to answer it
    12·1 answer
  • How many electrons does calcian have to gain or lose to have 8 valence electrons
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!