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
Masteriza [31]
3 years ago
14

What is the difference between the atomic number and the mass number of an element?

Chemistry
2 answers:
DedPeter [7]3 years ago
8 0

Mass number is the number of protons and neutrons in an atom, and it tells us about the mass of the atom in amu, or atomic mass units. Atomic mass is the average mass of all the isotopes of a certain type. It is a weighted average that takes into account the abundances of all of the different isotopes

hope this helps :)

aleksandr82 [10.1K]3 years ago
3 0

Atomic mass is also known as atomic weight. The mass number is a count of the total number of protons and neutrons in an atom's nucleus.

You might be interested in
Beer's Law states that A=ebc, where A is the absorbance, ε is the molar absorptivity of the solute, b is the path length, and c
Gelneren [198K]

Answer:

b. changing the compound changes the absorbance behavior.

Explanation:

  • Option a) would be akin to modifying the <em>path length</em>, b.
  • Option b) would involve using a different solute, as such, there would be another <em>molar absortivity</em>, ε.
  • Option c) would decrease the<em> concentration</em> (c) of the solute, which would explain why the absorbance would decrease as well.
8 0
3 years ago
Consider the reaction NOBr(g) =&gt; NO(g) + 1/2 Br2(g). A plot of 1/[NOBr] vs time give a straight line with a slope of 2.00 M-1
timama [110]

Answer:

Thus, the order of the reaction is 2.

The rate constant of the graph which is :- 2.00 M⁻¹s⁻¹

Explanation:

The kinetics of a reaction can be known graphically by plotting the concentration vs time experimental data on a sheet of graph.

The concentration vs time graph of zero order reactions is linear with negative slope.

The concentration vs time graph for a first order reactions is a exponential curve.  For first order kinetics the graph between the natural logarithm of the concentration vs time comes out to be a straight graph with negative slope.

The concentration vs time graph for a second order reaction is a hyberbolic curve. Also, for second order kinetics the graph between the reciprocal of the concentration vs time comes out to be a straight graph with positive slope.

Considering the question,

A plot of 1/[NOBr] vs time give a straight line with a slope of 2.00 M⁻¹s⁻¹.

<u>Thus, the order of the reaction is 2.</u>

<u>Also, slope is the rate constant of the graph which is :- 2.00 M⁻¹s⁻¹</u>

5 0
4 years ago
Quick answer plz............An oxide was prepared by combining 15.3g of an element “X” with 13.6g of oxygen. What is the simples
scoray [572]

Answered it coz of you

Any doubts just ping me

follow meh

8 0
3 years ago
Read 2 more answers
Name something made of aluminum
ira [324]
A can is something made of aluminum

3 0
4 years ago
Read 2 more answers
What is an example of a physical change
andrew-mc [135]
Breaking a glass
Crushing a can
Chopping wood
Boiling water
Mixing sand and water
Melting and ice cube
6 0
4 years ago
Read 2 more answers
Other questions:
  • Circle any conjugated portions in the molecules shown in(a - e). If no conjugation exists, write "no conjugation".
    6·1 answer
  • When bar-headed geese fly at very high altitudes (possibly over Mount Everest!), they breathe very thin air where the partial pr
    9·1 answer
  • What is the ph value of hcl
    11·2 answers
  • In the formula for water H2O what is a subscript 2 indicate?
    7·1 answer
  • Distinguish between acids and bases by indicating TWO general properties of acids and TWO general properties of bases. Be specif
    14·1 answer
  • Object A has a higher temperature than Object B. Which statement must be ture?
    5·2 answers
  • 4 pts
    14·1 answer
  • Standing still; not moving <br><br> 1.stationary<br> 2.motion<br> 3.universal law of gravitation
    13·2 answers
  • Which is true regarding the density of air?
    9·1 answer
  • Which of the following would
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!