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
Aliun [14]
3 years ago
15

What does the atomic number tell you about the atom of the element

Chemistry
1 answer:
andrew-mc [135]3 years ago
6 0

The atomic number of an element tells you the number of protons within said element.

You might be interested in
The carbon-14 content of a wooden harpoon handle found in an Inuit archaeological site was found to be 61.9% of the carbon-14 co
astraxan [27]

Answer:

3,964 years.

Explanation:

  • It is known that the decay of a radioactive isotope isotope obeys first order kinetics.
  • Half-life time is the time needed for the reactants to be in its half concentration.
  • If reactant has initial concentration [A₀], after half-life time its concentration will be ([A₀]/2).
  • Also, it is clear that in first order decay the half-life time is independent of the initial concentration.

  • The half-life of the element is 5,730 years.

  • For, first order reactions:

<em>k = ln(2)/(t1/2) = 0.693/(t1/2).</em>

Where, k is the rate constant of the reaction.

t1/2 is the half-life of the reaction.

∴ k =0.693/(t1/2) = 0.693/(5,730 years) = 1.21 x 10⁻⁴ year⁻¹.

  • Also, we have the integral law of first order reaction:

<em>kt = ln([A₀]/[A]),</em>

where, k is the rate constant of the reaction (k = 1.21 x 10⁻⁴ year⁻¹).

t is the time of the reaction (t = ??? year).

[A₀] is the initial concentration of the sample ([A₀] = 100%).

[A] is the remaining concentration of the sample ([A] = 61.9%).

∴ t = (1/k) ln([A₀]/[A]) = (1/1.21 x 10⁻⁴ year⁻¹) ln(100%/61.9%) = 3,964 years.

7 0
3 years ago
Why is a lot of energy needed to break covalent bonds
gulaghasi [49]

Answer:

The strength of a bond between two atoms increases as the number of electron pairs in the bond increases.

Explanation:

6 0
2 years ago
(3 pt) The cost of a space mission is roughly $60 million. What type of obstacle to space exploration does this represent? A. fu
erastova [34]
Im pretty sure its A funding because thats alot of money
7 0
2 years ago
Read 2 more answers
Is work done whenever you hold a heavy object for a long time?
AnnZ [28]

No, work is not done whenever you hold a heavy object for a long time

<h3>What is work done ?</h3>

The result of a force's displacement and its component of force exerted by the object in the direction of displacement is what is known as the force's work. When we push a block with some force, the body moves quickly and work is completed.

  • No work, as that term is used here, is done until the object is moved in some way and a component of the force travels along the path that the object is moved. Because there is no displacement when holding a heavy object still, energy is not transferred to it.

Learn more about Work done here:

brainly.com/question/25573309

#SPJ4

7 0
1 year ago
2. What is the current running through a toaster if the resistance is 15
pogonyaev
I’ll help you 8n a bit
8 0
2 years ago
Other questions:
  • Which rule is used for writing the name of an ionic base?
    11·2 answers
  • Consider the reaction 2Al(OH)3(s)→Al2O3(s)+3H2O(l) with enthalpy of reaction ΔHrxn∘=21.0kJ/mol What is the enthalpy of formation
    6·2 answers
  • Particles move because they have _______. As they gain energy, they move faster
    13·2 answers
  • Help 10
    7·2 answers
  • Which term is a measure of how much work an object can do? target mass velocity energy
    9·1 answer
  • Which of these is a disadvantage of multicellular organisms?
    5·2 answers
  • What is cells function of animal cell??<br>PLZ HELP ME ​
    9·1 answer
  • The upper part of the mantle is <br> Hard<br> OR<br> Soft
    5·1 answer
  • What chemical species is called alpha particle
    11·2 answers
  • In chemistry, densities of substances are often compared to the density of this substance
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!