Match the scientist to his contribution to the atomic theory - Thomson - Rutherford - Bohr A. Electron energy levels B. Nucleus C. Electrons

Answers

Answer 1

Answer: Thomson - C

Rutherford - B

Bohr - A

Explanation: I just took the quiz


Related Questions

thomas atoms theroy​

Answers

Answer:

Do you want to us to explain what it is

Explanation:

Answer:

APEX

Explanation:

The electron

Which of these is an extensive ?
A- density
B- melting point
C- temp.
D- volume

Answers

It would be Melting point C.

i need help with this pls

Answers

Answer:

C Is The Correct Answer Because The Deeper The Rock Is The Older It Is So The Top Is The Youngest And The Bottem Is The Oldest

Density of mercurio is

Answers

Ur moms the density of mercurio

Answer:

The density of mercury is 13.6 g/mL, which is equal to 1360 kg/m3.

From observing the plant and animal cell diagrams above, which cell seemed to have more of a regular structure?

Answers

Answer:

the green one

Explanation:

2. Which of the following statements correctly explains the difference between a theory and a scientific law?
O Scientific laws are not as well proven as theories.
O Scientific laws are statements about observed experimental facts, while theories are explanations of natural phenomena.
Theories are not as well proven as scientific laws.
O Scientific laws explain natural phenomena while theories are just guesses.

Answers

Answer:

pretty sure its Scientific laws are statements about observed experimental facts, while theories are explanations of natural phenomena.

The statement that correctly explains the difference between a theory and a scientific law is as follows:

Scientific laws are statements about observed experimental facts, while theories are explanations of natural phenomena.

Thus, the correct option is B.

What is Scientific theory?

A Scientific theory may be defined as a well-explained fact that is significantly associated with the natural world that has been constructed through the utilization of the scientific method, and which brings together many facts and hypotheses.

A Scientific theory is based on observation. It is proven but still testable in nature in order to derive evidence. It generally does not possess mathematical statements and deductions. Theories are explained on nature as well as natural phenomena.

Scientific law is based on unalterable facts or those facts that remain constant. It is proven as well as contains evidence to support the claim. It definitely possesses mathematical statements and deductions.

Therefore, the correct option for this question is B.

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What are some tips *from a girl* to get a girl to like you without making it obvious

Answers

just be nice, and compliment her
Ok to me this something you got to figure out on your own because not every girl is the same, take me for example i don’t care for anybody like or who likes me being nice i like them aggressive and honest but with like 10% of nice but not all time so i hope i could help you!

6.Think about where you live now or where you have lived in the past; use complete sentences to describe this environment and the weather. What building materials do you believe would work well to build a home in that area? Explain why you chose these materials.

Answers

Answer and Explanation:

I have always lived in the same region. The region where I live is flat and stable, the site has asphalt and the climate is tropical with a long summer and poorly defined seasons. My region does not have drastic changes and temperature and the climate is hot most of the year. For this reason, it is necessary to use materials that are thermal insulators, on the contrary we need to use materials that are not good thermal insulators such as concrete blocks, bricks, cement and ceramics, we will also need common tiles and rafters to support them.

How far is it from H to G?

Answers

3.5? Not sure thought I suggested a 2nd option

3. A gold ring has a mass of 67.0 grams. When
placed in a graduated cylinder containing 10 ml of
water, the water rises to 13.47 ml. Calculate the
density of the ring.
I

Answers

Answer:

The answer is

19.3 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]Density = \frac{mass}{volume} [/tex]

From the question

mass = 67 g

Volume of ring = new volume of water - original volume of water

Volume = 13.47 - 10 = 3.47 mL

Substitute the values into the above formula and solve

That's

[tex]Density = \frac{67}{3.47} \\ = 19.308357[/tex]

We have the final answer as

19.3 g/mL

Hope this helps you

What are some ways each person could reduce air pollution and energy consumption? a. adjust the temperature settings - hotter in winter and cooler in summer b. adjust the temperature settings - cooler in winter and hotter in summer c. cut down trees near the house d. replace plumbing fixtures that leak Please select the best answer from the choices provided A B C D

Answers

Answer:

b.

adjust the temperature settings - cooler in winter and hotter in summer

Explanation: I took the quiz

Answer:

B. adjust the temperature settings- cooler in winter and hotter in summer

Explanation:

edge 2020

which statement describes redis experiment which helped disprove spontaneous generation?

Answers

He examined covered and uncovered meat to determine that maggots came from eggs. He heated milk to show that it could destroy bacteria. He wrote a book on how cells come from other cells through reproduction.

Answer:

it is A i just got it right

Explanation:

YOU DO:
1) A 15.0 gram sample of sodium hydrogen carbonate, NaHCO3, was contaminated with an impurity. In order
to determine the purity of the sample, it was heated to decompose the material according to the following
reaction:
2NaHCO3 → Na2CO3 + H2O + CO2
If 6.35 grams of sodium carbonate, Na2CO3, were recovered, what percentage (by mass) of the sample was
sodium hydrogen carbonate, NaHCO3?
I

Answers

Answer:

67.1%

Explanation:

Based on the chemical equation, if we determine the moles of sodium carbonate, we can find the moles of NaHCO₃ that reacted and its mass, thus:

Moles Na₂CO₃ - 105.99g/mol-:

6.35g * (1mol / 105.99g) = 0.0599 moles of Na₂CO₃ are produced.

As 1 mole of sodium carbonate is produced when 2 moles of NaHCO₃ reacted, moles of NaHCO₃ that reacted are:

0.0599 moles of Na₂CO₃ * (2 moles NaHCO₃ / 1 mole Na₂CO₃) = 0.1198 moles of NaHCO₃

And the mass of NaHCO₃ in the sample (Molar mass: 84g/mol):

0.1198 moles of NaHCO₃ * (84g / mol) = 10.06g of NaHCO₃ were in the original sample.

And percent of NaHCO₃ in the sample is:

10.06g NaHCO₃ / 15g Sample * 100 =

67.1%

What are the three types of symbiosis?

Answers

Answer:

commensalim, mutualism, parasitism

Commensalism, mutualism, parasitism

What is the density of a purple gas that has a mass of 10 g and a volume of 20 mL? Show your work!

Answers

Answer: 0.5g/ml

Explanation:

The density of a substance is given by the following formular; Mass / Volume,

Where mass = 10g

           volume = 20ml

Density = 10g/ 20ml = 0.5g/ml

i need to know what the summary of matter is helpppppp!!!!

Answers

Answer:

Matter can be classified according to physical and chemical properties. Matter is anything that occupies space and has mass. The three states of matter are solid, liquid, and gas. A physical change involves the conversion of a substance from one state of matter to another, without changing its chemical composition.

Explanation:

A student is measuring the volumes of nectar produced by a flowering plant for an experiment. He measures nectar from 50 flowers using a graduated cylinder that measures to the nearest millilitre (mL). Which statement describes a change that can help improve the results of his experiment?
A.) His measurements will be more precise if he takes measurements from an additional 100 flowers. B.) His measurements will be more accurate if he uses a graduated cylinder that measures to the nearest tenth of a mL. C.) His measurements will be more precise if he uses a graduated cylinder that measures to the nearest tenth of a mL. D.) His measurements will be more accurate if he takes measurements from an additional 100 flowers.
NEED HELP NOW PLEASE!!!

Answers

Answer:

His measurements will be more precise if he uses a graduated cylinder that measures to the nearest tenth of a mL.

Explanation:

His measurements will be more accurate if he uses a graduated cylinder that measures to the nearest tenth of a mL. The correct option is B.

The closeness of a measurement to the real or recognised value is referred to as accuracy.

The learner can achieve more exact measurements and eliminate the possibility of rounding mistakes by using a graduated cylinder that measures to the closest tenth of a millilitre.

This enhanced precision will help to improve measurement accuracy. Taking measurements from more flowers (options A and D) will expand the sample size but will not enhance accuracy unless the measuring device is updated.

Option C recommends improving precision but does not address accuracy.

Thus, the correct option is B.

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which of the following substances does not conduct electricity
a)brass b)copper c)carbone(graphite) d)carbon(diamond)

Answers

Answer:

diamonds

Explanation:

Diamond does not conduct electricity.  

• A form of carbon in which each of the atom of carbon is joined to four other atoms of carbon, giving rise to a giant covalent composition is a diamond.  

• Due to this, diamond is very robust and exhibits high melting point. Thus, is used to cut tools.  

Diamond does not conduct electricity, due to the absence of delocalized electrons in the structure.  

Thus, diamond does not conduct electricity. Option d is correct.

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Which are characteristics of all living things? Check all that apply. are made of cells need energy A. can breathe B. respond to stimuli C. can reproduce D.grow and develop / help me please

Answers

Answer:

All can be charactoristics of a living thing

Explanation:

Answer:

Grow

Need energy

respond to stimuli

are made of cells

Explanation:

correct on edge 2022 :)

Which statement explains how the bands in the crystal of a metal are like atomic orbitals?
A. They both have localized electrons that orbit specific atoms.
B. They both involve ionization of some atoms so bonding can occur.
C. They both have delocalized electrons that move from atom to atom.
D. They both allow electrons to move from lower energy levels to higher energy levels.

Answers

Answer:

D

Explanation:

Correct On EDU

Crystal lattice of metals are highly ordered in which the ions and electrons are arranged in a stoichiometric proportion. But,electrons can excite to higher energy levels as they fo in atomic state. Thus , option D is correct.

What is crystal lattice?

Crystal are highly ordered structures of solids and is anisotropic in nature with a perfect geometry and crystal lattice units. There will be free electrons present in the interstices spaces and which can be delocalized throughout the lattice results in conduction.

Electrons can acquire energy to excite to the higher energy levels from the lower energy level in a crystal lattice. Electrons are revolving around the nucleus of an atom through definite circular paths of fixed energy.

Electrons in an atom tends to excite to higher energy levels and then will return to the lower energy level by emission of energy in the form of light or heat. This process make the element coloured and conducting as in the case of crystal bands in metals.

Hence, both atoms and metal lattice allow electrons to move from lower energy levels to higher energy levels and option D is correct.

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a table that compares the properties of suspensions, colloids, and solutions.

Answers

Answer:periodic table

Explanation:

1.) What are the chemical properties of matter?

Answers

Answer:

Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. They include reactivity, flammability, and the ability to rust. Reactivity is the ability of matter to react chemically with other substances.

Explanation:

Your cute btw :)

A loaf of bread has a mass of 0.5kg and a volume of 2500cm³. what is the density of the bread

Answers

Density is mass divided by volume.

Since mas is 0.5kg we need to convert it to grams. Using conversion factors we get the mass of the bread to be 500g.

So densty=500/2500

density =1/5 grams per cubic centimeter

:)

An Olympic swimmer can swim a distance of 360m in 8.5 minutes. What is her speed?

Answers

speed= distance / time
s= 360m / 510 s
s= 0,7 m/s

Answer:

42.3529412 m/min or 0.705882353 m/s

Explanation:

We can calculate speed using the following formula.

[tex]s=\frac{d}{t}[/tex]

where [tex]d[/tex] is distance and [tex]t[/tex] is time.

The Olympic swimmer can swim 360 meters in 8.5 minutes. Therefore,

[tex]d= 360 \ m \\t= 8.5 \ min[/tex]

Substitute the values into the formula.

[tex]s=\frac{360 \ m}{ 8.5 \ min}[/tex]

Divide.

[tex]s= 42.3529412 \ m / min[/tex]

Her speed is 42.3529412 meters per minute.

If we want to find her speed in meters per second, convert the minutes to second.

1 minute is equal to 60 seconds, so we can multiply 8.5 by 60.

[tex]8.5 *60=510[/tex]

The swimmer can swim 360 meters in 510 seconds.

[tex]s=\frac{d}{t}[/tex]

[tex]d= 360 \ m \\t= 510 \ s[/tex]

[tex]s=\frac{360 \ m}{510 \ s}[/tex]

[tex]s=0.705882353 \ m/s[/tex]

Her speed is also 0.705882353 meters per second.

Use your knowledge of atomic calculations to complete the chart.
Element
Protons
Neutrons
Electrons
Atomic
Number
3
15
Atomic
Mass
7
31
35
19
28
31
P
ci
Ni
K
Ag
H
39
19
-18
47
OK
1
1
14
14
06
3
Si
w
74
1010
Ne
10
10

Answers

Answer:

For hydrogen. H

Explanation:

Atomic number is 1

Proton number is 1

Mass number is 2

Neutron number is 1

What is the mass of a
12.31 cm3 piece of
copper having a density of
8.96 g/cm3

Answers

Answer:

110.30 grams

You have to multiply by 8.96.

12.31 x 8.96 = 110.30 grams.

Therefore, that is your answer.

(Sorry I had to answer twice it was because of LukeG1).

What is coronavirus
Why do you need to be cautious

Answers

Answer:

IT IS CORONAAAAAAAAAAAAAAAAAAAAA

Answer:

coronavirus is a lung disease, it makes it so that you have a fever, cough, trouble breathing, mild headaches, and sometimes even nausea. you should be cautious because if your at high risk your gonna have trouble recovering from it. wearing a mask could help protect others from the spread of coronavirus. others wearing a mask prevents you from the spread of coronavirus. if you do catch it, make sure you see your doctor and isolate yourself for two weeks to a month and try not to go out as much.

Round off the following quantities to the number of significant figures indicated in parentheses: 69.733 g (2)

Answers

Answer:

70

Explanation:

There are 5 significant figures in the problem. Since it has a decimal point, we start on the left hand side and work our way to the right. You would end up at 69, but then you have to round up since the next number is a 7, which is greater than or equal to 5.

All elements on the periodic table are________

Answers

Answer:

Explanation:

arranged in order of increasing.

Approximately how tall is Able Hill? Don't forget your unit

Answers

Answer:

about 42m 3

copied from google

hope that helps

approximately 42m 3 was Able Hill

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