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
Alik [6]
3 years ago
14

How did the discovery of isotopes help to lead to a revised model of atomic structure?

Chemistry
1 answer:
Arte-miy333 [17]3 years ago
8 0
Dalton postulated that atoms of the same elements had the same mass while atoms of different elements had different masses. 

The discovery of isotopes revealed that atoms of the same element did not necessarily have same masses, they could have different masses.

Therefore, the modern periodic table that we use nowadays contains the average atomic mass of all the isotopes found for a given element.
You might be interested in
Calculate the pH of a buffer prepared by mixing 20.0 mL of 0.10 M acetic acid and 55.0 mL of 0.10 M sodium acetate
MatroZZZ [7]

Answer:

Calculate the pH of a buffer prepared by mixing 30.0 mL of 0.10 M acetic acid and 40.0 mL of 0.10 M sodium acetate.

3 0
3 years ago
Chemistry, please help! Thanks.
Ilya [14]

Answer:

d. The gold(III) ion is most easily reduced.

Explanation:

The standard reduction potentials are

Au³⁺ + 3e⁻ ⟶ Au;   1.50 V

Hg²⁺ + 2e⁻ ⟶ Hg; 0.85 V

Zn²⁺ + 2e⁻ ⟶ Zn; -0.76 V

Na⁺ + e⁻     ⟶ Na; -2.71 V

A <em>more positive voltage</em> means that there is a <em>stronger driving force</em> for the reaction.

Thus, Au³⁺ is the best acceptor of electrons.

Reduction Is Gain of electrons and, Au³⁺ is gaining electrons,  so

Au³⁺ is most easily reduced.

4 0
3 years ago
Which option can be classified as a pure substance
Zina [86]
I have done this question before and even though you didn’t provide the options. I think the correct option is elements
4 0
3 years ago
Read 2 more answers
Express the following in regular notation:
dusya [7]
A because if you multiple it, you will be moving the decimal one time
8 0
3 years ago
When discussing acids and bases, any substance that accepts a proton, by definition, is considered
enot [183]
Any substance that accept a proton by definition is considered to be BRONSTED LOWRY BASE.
Bronsted Lowry defined acid and base on the basis of donating or accepting protons. In the Bronsted Lowry classification of acid and base, an acid is defined as a substance which donate proton while a base is defined as a substance which accept proton.
4 0
3 years ago
Read 2 more answers
Other questions:
  • How can a scientist prevent bias in a scientific investigation
    10·1 answer
  • A pool is 60.0 m long and 35.0 m wide. How many mL of water are needed to fill the pool to an average depth of 6.35 ft? Enter yo
    7·1 answer
  • A gas company has the following rate schedule for natural gas usage in single-family residences:
    15·1 answer
  • When you go down a group, does the tendency for a metal to react (become duller) increase or decrease?
    11·1 answer
  • A mining crew extracted two different types of minerals from underground.
    8·2 answers
  • En que flota el osmio
    6·1 answer
  • Think of an everyday situation in which two objects interact and exert a force on each other. Explain how the interaction can ca
    9·1 answer
  • While Cameron is intensely working out, his muscles begin to get sore and start to burn. What type of cellular
    6·1 answer
  • Who even answers all of these gets a brainlist and thanks and + points
    14·1 answer
  • What is true at the equivalence point of a
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!