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Kazeer [188]
3 years ago
11

Which of the following ideas about the atom changed when new evidence was discovered?

Chemistry
1 answer:
poizon [28]3 years ago
7 0

Answer:

Atoms cannot be divided.

Explanation:

Earlier the following points were proposed for an atom that:

A. Elements are different kinds of atoms. : For example atom of oxygen will be different from atom of carbon.

B. All matter is made up of atoms: it is also true that whatever matter we observe is made up of some atom. Either it is a mixture or pure substance.

C. Atoms cannot be divided: This is not true. Further scientific studies showed that an atom can further be divided into sub atomic particles electrons, neutrons and protons. Thus the idea of indivisibility of an atom changed when new evidence was discovered.

D. Atoms are made up of smaller particles: It is true as atoms are made up of sub atomic particles.

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A pound of margarine costs $1.39. What is the cost of a kilogram of margarine
den301095 [7]

Answer:

              3.064 $

Solution:

First of all we will find the number of pounds contained by one Kg. Therefore, it is found that,

                                    1 Kilogram  = 2.20462 Pounds

Hence, as given,

                        1 Pound of Margarine costs  =  1.39 Dollars

So,

                  2.20462 Pounds Margarine will cost  =  X Dollars

Solving for X,

                     X  =  (2.20462 Pounds × 1.39 Dollars) ÷ 1 Pound

                     X =  3.064 Dollars

8 0
3 years ago
The pressure that is the difference between the net hydrostatic pressure and the net colloid osmotic pressure is called
mina [271]

The pressure calculated as the difference between the net hydrostatic pressure and the net colloid osmotic pressure is known as: filtration pressure.

<h3>What is pressure?</h3>

Pressure can be defined as a measure of the force exerted per unit area of an object or body. Thus, it is usually measured in Newton per meter square.

<h3>The types of pressure.</h3>

In Science, there are different types of pressure and these include the following:

  • Hydrostatic pressure
  • Atmospheric pressure
  • Osmotic pressure
  • Filtration pressure

Filtration pressure is a pressure that is typically calculated as the difference between the net hydrostatic pressure and the net colloid osmotic pressure. Also, it promotes the filtration of fluid through a membrane.

Read more on pressure here: brainly.com/question/24827501

4 0
2 years ago
The red balls represent _____ and have a positive charge.
AysviL [449]
The answer is protons. Neutrons have no charge and electrons have a negative charge so the positive charge must be protons.
4 0
3 years ago
Particles are arranged in a crystal structure in a sample of
Sergeu [11.5K]
The answer is (4) Ag(s)

Solid Silver has a Face Centered Cubic crystal structure.

The remaining choices are gases (H2 & Ar) and liquid (Br). Liquids and gases do not form crystal structures as their atoms are loose.
3 0
3 years ago
0.89kg is equivalent to
ahrayia [7]
1.96 pounds, i hope this helped.
3 0
3 years ago
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