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
UkoKoshka [18]
3 years ago
5

Who is john dalton,jj Thompson and ernest Rutherford ​

Chemistry
1 answer:
Liula [17]3 years ago
5 0

Answer:

John Dalton described atoms as tiny, indivisible and indestructible particles. John Dalton proposed the first atomic theory, J.J. Thomson discovered the electron, Ernest Rutherford discovered the nucleus

You might be interested in
When red litmus paper is added to limewater, then what will
Sedbober [7]

Red Litmus paper turns blue

Answer:

Ca(OH) _2

Explanation:

In lime water \red{\bold {RED}} litmus paper turns \blue {\bold {BLUE}} because lime water is alkaline.

formula \: for \: lime \: water : Ca(OH) _2  \\

3 0
3 years ago
The mass of a jar of sugar is 11. 9 kg. What is the total mass of 13 jars of sugar?.
Masteriza [31]

Answer:

154.7

Explanation:

11.9kg x 13 = 154.7

5 0
2 years ago
Over the course of many years, a rural farm town becomes more urban. Which of the following will most likely happen in the town
MrRa [10]

Answer:

Explanation:

Rivers may be contaminated by sewage.

I do hope I helped you! :)

6 0
3 years ago
Explain how you determine the freezing point of a solution that does not have a well-defined transition in the cooling curve.
Sophie [7]

This question is asking for a method for the determination of the freezing point in a solution that does not have a noticeable transition in the cooling curve, which is basically based on a linear fit method.

The first step, would be to understand that when the transition is well-defined as the one on the attached file, we can just identify the temperature by just reading the value on the graph, at the time the slope has a pronounced change. For instance, on the attached, the transition occurs after about 43 seconds and the freezing point will be about 4 °C.

However, when we cannot identify a pronounced change in the slope, it will be necessary to use a linear fit method (such as minimum squares) to figure out the equation for each segmented line having a significantly different slope and then equal them so that we can numerically solve for the intercept.

As an example, imagine two of the segmented lines have the following equations after applying the linear fit method:

y=-3.5 x + 25\\\\y=-0.52 x + 2

First of all, we equal them to find the x-value, in this case the time at which the freezing point takes place:

-3.5 x + 25=-0.52 x + 2\\\\-3.5 x+0.52 x =2-25\\\\x=\frac{-23}{-2.98}=7.72

Next, we plug it in in any of the trendlines to obtain the freezing point as the y-value:

y=-3.5 (7.72) + 25\\\\y = 1.84

This means the freezing point takes place after 7.72 second of cooling and is about 1.84 °C. Now you can replicate it for any not well-defined cooling curve.

Learn more:

  • brainly.com/question/22818252
  • brainly.com/question/9680530

7 0
3 years ago
Why do rivers have deltas?
Leokris [45]

Answer:

A delta is formed when the river deposits its material faster than the sea can remove it. ... Cuspate - the land around the mouth of the river juts out arrow-like into the sea. The Ebro Delta. Bird's foot - the river splits on the way to the sea, each part of the river juts out into the sea, rather like a bird's foot.

I hope it's helpful!

7 0
2 years ago
Other questions:
  • What is the strongest type of intermolecular force present in nh2ch3?
    14·1 answer
  • Why do you think properties of materials used would be considered a constraint?
    5·1 answer
  • List in order which digits are significant in the following numbers:
    8·1 answer
  • Use the information below to explain why the atomic radius decreases across a period.
    14·1 answer
  • 3) Two plants are grown using the same light and pots. One plant is given water that has been
    11·1 answer
  • Particle motion in ice is _________<br> than particle motion in water.
    6·1 answer
  • We know that potential energy is the stored energy in an object. In a stretched rubber band or compressed spring that stored ene
    8·1 answer
  • In which material would the particles be closest together?
    5·2 answers
  • Archimedes himself had a mass of 52 kg when he discovered displacement. If his density was roughly 12 g/mL, calculate the amount
    9·2 answers
  • Calcium propionate [Ca(CH₃CH₂COO)₂; calcium propanoate] is a mold inhibitor used in food, tobacco, and pharmaceuticals.(a) Use b
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!