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
stiks02 [169]
2 years ago
15

I need help ASAP!!! I need to know the model and the person who discovered it please!

Chemistry
2 answers:
QveST [7]2 years ago
6 0

Answer:

its actually the first modern atomic theory and it was created by john dalton in 1808.

Explanation:

brainliest?

Crank2 years ago
4 0

Answer:

i think electron cloud model

You might be interested in
Please help me i’m struggling
Marrrta [24]

Answeeeeer:

 A. cell

Explanation:

Since A is the smallest in the chart, that would correspond to the cell because thats the smallest out of Tissue, Organ and Organism.

3 0
2 years ago
How many electrons does hydrogen need to satisfy the octet rule?
quester [9]
Just 2 valence electrons.

Hydrogen already has one to start with, as well. With the exception of hydrogen and helium, all other atoms need 8 valence e-
4 0
3 years ago
Does volume alone determine whether an object will sink or float? Explain.
Bond [772]

Answer:

no.

Density (mass / volume) determines whether an object floats or sinks. If the object is less dense than the medium in which it has been submerged, it floats. if it is more dense, it sinks. Volume will definitely determine if a steel ship floats, as steel is far more dense than water.

#FreeMelvin

3 0
3 years ago
Read 2 more answers
Write the fraction of the mass of kcl produced from 1 g of k2c03​
Minchanka [31]

Mass of KCl= 1.08 g

<h3>Further explanation</h3>

Given

1 g of K₂CO₃

Required

Mass of KCl

Solution

Reaction

K₂CO₃ +2HCl ⇒ 2KCl +H₂O + CO₂

mol of K₂CO₃(MW=138 g/mol) :

= 1 g : 138 g/mol

= 0.00725

From the equation, mol ratio K₂CO₃ : KCl = 1 : 2, so mol KCl :

= 2/1 x mol K₂CO₃

= 2/1 x 0.00725

= 0.0145

Mass of KCl(MW=74.5 g/mol) :

= mol x MW

= 0.0145 x 74.5

= 1.08 g

6 0
3 years ago
Please solve for Cu,N,and O an dif you can show how cause ik confused
belka [17]

Cu⇒ 1 atom

N⇒2 atoms

O⇒6 atoms

Total 9 atoms

<h3>Further explanation  </h3>

The empirical formula is the smallest comparison of atoms of compound forming elements.  

A molecular formula is a formula that shows the number of atomic elements that make up a compound.  

<em>(empirical formula) n = molecular formula  </em>

Chemical formula : Cu(NO₃)₂

Number of Cu : 1

Number of N : 2

Number of O = 2 x 3 = 6

Total atoms in Cu(NO₃)₂ : 1 + 2 + 6 = 9

4 0
2 years ago
Other questions:
  • Hno3(aq)+k2so3(aq)→ express your answer as a chemical equation. identify all of the phases in your answer.
    9·2 answers
  • How many grams of CO₂ will be produced from 7.00 g of C₃H₈ and 98.0 g of O₂?
    9·1 answer
  • I NEED HELP PLEASE !!!!!
    7·1 answer
  • In your own words right a definition of earth core
    6·2 answers
  • Atoms of the same chemical element that have different atomic mass are known as?
    8·1 answer
  • Write a procedure for how you would measure the effect of reactant concentration on the reaction rate
    11·1 answer
  • In 1909, Ernest Rutherford performed an experiment to explore the atomic structure. In his experiment, he projected high-speed α
    7·1 answer
  • What is a claim?
    11·1 answer
  • Which process is an example of a chemical change?
    10·2 answers
  • 08 03 M
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!