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
Trava [24]
3 years ago
11

Watch the animation depicting Rutherford's experiment and choose which of the following conclusions are correct.Check all that a

pply.1. The mass of an atom is concentrated at the nucleus.2. A positive charge is spread equally over the atom.3. Positive charge is condensed in one location within the atom.4. The majority of the space inside the atom is empty space.5. The atom is a very compact entity without any empty space.6. The atom contains a positively charged nucleus.
Chemistry
1 answer:
Blababa [14]3 years ago
6 0

Answer:

  • <em>1. The mass of an atom is concentrated at the nucleus.</em>

<em />

  • <em>3. Positive charge is condensed in one location within the atom.</em>

<em />

  • <em>4. The majority of the space inside the atom is empty space.</em>

<em />

  • <em>6. The atom contains a positively charged nucleus.</em>

Explanation:

When J.J Thmpson discovered the electron, he depicted the atom by the plum pudding model: a solid dough of homogeneously distributed positive charge (the pudding) containing negatively charged electrons (the plums).

Later, the scientist <em>Ernest Rutherford</em>, with its experiment of the gold foil experiment showed that the subatomic particles where not all concentrated in a solid part.

When a thin gold foil was bombarded with alpha particles (positively charged nuclei of helium atoms), most of the particles went through the gold sheet, with little deviation, but some particles bounded with a high deviation.

Such few high deviations were explained by the fact that there was a heavy region in the atom (the core or nucleus) with the positive charge that repelled the positively charged alpha particles.

Thus, <em>the mass of the atom was conentrated at the nucleus</em> (choice 1), where the positive charge is distributed in one location, which is the nucleus (not over the entire atom, just on the nucleus) discarding the choice number 2 (that a positive charge is spread equally over the atom) and proving choices 3 (<em>the positive charge is condensed in one location within the atom</em>) and 6 (<em>the atom contains a positively charged nucleus</em>).

Since most of the particles indeed went through the nucleus, this nucleus has to  occupy little space, and most of the atom was empty space, proving choice 4 (<em>the majority of the space inside the atom is empty space</em>).

You might be interested in
The wastewater in your home goes to one of three places. It can run into a home septic system, it can go to a centralized sewage
NemiM [27]

Answer:

                                                 

Explanation:

5 0
3 years ago
Read 2 more answers
Calculate the number of formula units in 1.87 mol of NH4Cl
nydimaria [60]

Answer:

1.13 x 10²⁴formula units

Explanation:

Given parameters:

Number of moles of NH₄Cl = 1.87mol

Unknown:

Number of formula units = ?

Solution:

From mole concept;

     1 mole of a substance contains 6.02 x 10²³ formula units

Now;

    1.87 moles of  NH₄Cl   1.87 x 6.02 x 10²³ = 1.13 x 10²⁴formula units

4 0
2 years ago
Calculate the amount of energy required to melt 500 g of ice at 0oc. (δhfus=5.96 kj/mole; δhfus is the energy required to melt i
marta [7]
When you want to melt an ice, you only need the latent energy of fusion, <span>δhfus. We use the given value, then multiply this with the given amount to determine the amount of energy. Since the energy is per mole basis, use the molar mass of ice which is 18 g/mol. The solution is as follows:

</span>ΔH = 5.96 kJ/mol * 1 mol/18 g * 500 g
<em>ΔH = 165.56 kJ</em><span>
</span>
3 0
3 years ago
Biphenyl and benzene are common side products in this gringard reaction. explain at which points in the purification procedure t
mafiozo [28]

In Grignard reaction, Biphenyl and benzene are common side products which are removed during trituration.

In organic chemistry, a reaction in which the Grignard reagents or organometallic substances are added to organic compounds such as aldehydes and ketones to form alcohol is known as Grignard reaction.

These Grignard reagents are magnesium halides of alkyl, vinyl or allyl, which react with a carbonyl group to form alcohols.

During this reaction, primary, secondary and tertiary alcohols are formed.

While Biphenyl and benzene are common side products.

These are removed during trituration process in which cold petroleum ether is added to dissolve the biphenyl and benzene side products

If you need to learn more about Biphenyl and benzene click here:

brainly.com/question/4336669

4 0
1 year ago
What is the density of an object that has a mass of 1.08 kg and displaces 50.50 cm3 of water? (Please report your answer in g/cm
masha68 [24]

Answer:

Explanation:

1.08kg/50.5 cm^3(1000g/kg)=21.386 g/cm^3

3 0
2 years ago
Read 2 more answers
Other questions:
  • Stronitum-90 has a half-life of 29 years. if a site held 2000 kg of this isotope, approximately what mass of strontium-90 would
    12·2 answers
  • A certain hydrocarbon has a molecular formula of C9H16. Which of the following is not a structural possibility for this hydrocar
    11·1 answer
  • Is hardness physical or chemical property
    13·1 answer
  • A(n) ____________ is a variety of an element with the same number of protons and electrons as the other types of the element but
    5·1 answer
  • Which is a type of protein?
    12·2 answers
  • The rate of disappearance of HBr in the gas phase reaction 2HBr(
    11·1 answer
  • Suppose a species of snake is living in a certain area. Some of the snakes in the population are black and some are orange. Over
    7·2 answers
  • Can someone please help
    10·2 answers
  • Which is the correct order for a food chain?
    11·1 answer
  • Which type of fuel can only be used in certain geographic areas?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!