Which question would be scientifically reasonable for a student to ask about the layers of the Earth?
A. Why does the temperature decrease as you move from the crust to the core?
B. Why does density increase as you move from the crust to the core?
C. Why does density decrease as you move from the crust to the core?
D. Why is the inner core liquid iron and the outer core solid iron?

Answers

Answer 1

Answer:

The answer is C

Explanation:


Related Questions

The mass of a bowling ball is 5 kilograms what is the mass of a bowling ball in grams?

Answers

In science, the standard unit of mass is the kilogram (kg). A bowling ball has a mass of about 5 kilograms. A basketball has a mass of just over 0.5 kilogram. The mass of a basketball can easily be given in smaller units—grams.

The mass of the bowling ball in grams is 5000g

What is the mass of a bowling ball in grams?

To convert the mass of a bowling ball from kilograms to grams, you can multiply the mass in kilograms by 1000, as there are 1000 grams in one kilogram.

Using metric system;

So, the mass of a 5-kilogram bowling ball in grams would be:

5 kilograms * 1000 grams/kilogram = 5000 grams

Therefore, the mass of a 5-kilogram bowling ball is 5000 grams.

Learn more on metric system here;

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Which orbital can be modeled by a "peanut" shape?

Answers

Answer:

d - orbital

Explanation:

The d-orbital can modelled by a peanut shape.

A peanut shape closely resembles the shape of a double dumb-bell shape. The double dumb-bell shape is like that of a peanut.

The s-orbital has a spherical shape. p - orbital is dumb-bell shapedd - orbital is a double dumbellf - orbital has a complex shape.

Therefore, since a peanut is like a double dumb-bell, it clearly models the d-orbital.

Just need help with these 2 problems

Answers

Answer:

All of the above

A person lifts up a box from the ground and places it on a shelf

Explanation:

Work done is the force applied on a body to move it through a particular distance or to cause displacement.

In describing work done:

 Force applied which is the push or pull on a body is very important

 Distance or displacement which is the resultant length of path traveled by the body is key.

 Work done  = force x distance moved in the direction of the force

A person lifting a box is doing work.

 

Explain what an air mass is?

Answers

An

yedsdfsdfdsfsdfsd f sdf ssdf sdfsdf sd fsdf sd

Explanation:

Answer:

A body of air with horizontally uniform temperature, humidity, and pressure.

Explanation:

hope this helped :)


14)
Air can be considered a mixture. Which statement helps describe air?
A) Air contains a fixed ratio of atoms.
B) The components of air separate into visible layers.
C) The components of air can be separated by chemical means.
D) The exact mixture of components varies from point to point.

Answers

Answer:

the components of air can be separated by chemical means

Answer:

D)  The exact mixture of components varies from point to point.

Explanation:

Here's why: Air can be considered a homogeneous mixture.The exact mixture of components varies from point to point. Air is made up of individual elements and compounds. When near a cow pasture, you can smell the compounds associated with cow patties but you can not see these as separate from the rest of the air

what bond is a sea of free flowing electrons

Answers

Answer:

metallic bonds

Explanation:

in metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize. That is to say, instead of orbiting their respective metal atoms, they form a “sea” of electrons that surrounds the positively charged atomic nuclei of the interacting metal ions.

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In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize. That is to say, instead of orbiting their respective metal atoms, they form a “sea” of electrons that surrounds the positively charged atomic nuclei of the interacting metal ions. (THIS WAS LOOKED UP, SO DONT COPY AND PASTE OR YOUR TEACHERS WILL THINK YOUR CHEATING. GIVE THE OTHER PERSON BRAINLY, Hope this helps!)

A part of the periodic table is shown
11
Na
19
K
37
Rb
12
Mg
20
Ca
38
Sr
Which of the following elements has the highest atomic mass (amu)?

a Sodium (Na)
b Calcium (Ca)
c Strontium (Sr)
d Potassium (K)

Answers

Answer:

c

Explanation:

Please help me ASAP!!!!!!
How many moles are present in 5.24 x 1023 molecules of CH4?

Answers

I hope this helps. I am in a lower grade than you, I am assuming, but I wanted to help you

Answer:

40

Explanation:

effective nuclear charge of Ga

Answers

4.066 should be correct
I think the answer is 4.066

How many molecules make up 0.051 moles of Potassium chloride (KCl)?

Answer: ???? molecules KCl (no rounding; remember to use scientific notation when necessary)

Answers

Answer:

3.0702 × 10²² molecules

Explanation:

The number of molecules potassium chloride can be found by using the formula

N = n × L

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 0.051 × 6.02 × 10²³

We have the final answer as

3.0702 × 10²² molecules

Hope this helps you

Atoms of Oxygen-16, Oxygen-17 and Oxygen-18 have the same number of _________________?

Answers

Answer:

Atomic number or number of protons

Explanation:

The given species are all isotopes of oxygen. Isotopes have the same number of protons or atomic number. They only differ in the number of neutrons.

Isotopy is the existence of two or more atoms of the same elements having the same atomic number but different mass number. The different mass number is due to differences in their number of neutrons. Isotopes have the same electronic configuration and hence, they have the same chemical properties. Isotopes only differ in their masses.

Which elements have similar behavior? barium silicon aluminum strontium osmium beryllium

Answers

Answer:

Barium, beryllium, and Strontium

Explanation:

These 3 elements are located in the same group, which determines the number of valence electrons.

The valence electrons determine how reactive an element will be.    

A. →barium

B. silicon

C. aluminum

D. →strontium

E.osmium

F. →beryllium

Hope that this helps! :) :) :) :) :)

Which of these items found on a food label IS NOT a food?
Calories
Sugar
Proteins
Total fats

Answers

Answer:

the first one Calories

a sample that has a half life of 45 years take ____ for the count rate to drop from 600 cpm to 150 cpm

Answers

Answer:

90yrs

Explanation:

Half life is the time taken for half of an original radioactive material to decay by half.

For the sample;

    Half - life = 45yrs

  Original amount  = 600cpm

 

                 Start                                  Number of atoms    

                 0yrs                                                600cpm

                                   First half life

                 45yrs                                              300cpm

                                  Second half life

                 90yrs                                               150cpm

Help quickly please, actual answer

Answers

Answer:

the answer is d i think probably of the format of that place of the only on to 9 so its d

The burning gases of the sun are matter in the gaseous state, whereas the ground you walk on is matter in the ___________state.

Answers

Answer:plasma

Explanation:

Which characteristic applies to all mixtures, including solutions?
a) Mixtures must be composed of compounds.
b)Mixtures are composed of a single element.
c)Mixtures are composed of two or more substances.
d)Mixtures have uniform structures throughout entire samples.​

Answers

Answer:

c)Mixtures are composed of two or more substances.

Explanation:

From the given choices, it is true that mixtures are composed of two or more substances.

Mixtures have indefinite composition i.e. they consist of two or more compounds in any proportion by mass.Constituents retain their identity. The constituents reacts differently to changed conditions. They can easily be separated into constituents.

=
1.10
Which procedure involves a physical change in one of the substances?
O creating salt by reacting sodium metal and chlorine gas
O grinding chalk into a fine powder
o building a model rocket propelled by mixing baking soda and vinegar
O allowing a nail to rust

Answers

Answer:

Grinidng chalk into a fine powder

Explanation:

The answer is C.) Grinding Chalk into a fine powder because as you can see from the others, the words REACTING, MIXING, and anything dealing with rust, is a result of a chemical change happening. Grinding chalk is not changing the fact that it is chalk, all it is doing is changing its physical shape. I hope you found this helpful have a good night!

Tin-126 has a half life of 100,000 years. How many years does it take to
reduce 100 g of Tin-126 to 12.5 g?
100,000 years
200,000 years
50,000 years
300,000 years

Answers

Answer:

300,000 years

Explanation:

100g=0 years

50g=100,00 years

25g=200,00 years

12.5g=300,000 years

300’000 yes I think she is correct

67. What is an atomic nucleus? (1 point)
the outer part of an atom in which electrons move
the outer part of an atom in which neutrons move
the central part of an atom, composed of protons and neutrons
the central part of an atom, composed of protons and electrons

Answers

Answer:

Explanation:

the central part of an atom, composed of protons and neutrons

Answerhi

Explanation:

fhgh

Finding the mass of a bar of aluminum is 25 grams is it hypothesis observation inference or guess

Answers

Answer:

It is a observation

Explanation:

How are chemicals used to produce colors in fireworks?

Answers

Answer:

The colors are produced by heating metal salts, such as calcium chloride or sodium nitrate, that emit characteristic colors. List of colors and elements in Fireworks: Aluminum – Aluminum is used to produce silver and white flames and sparks.

describe the whole process of Aluminum extraction from bauxite.​

Answers

Answer:

Extraction of aluminium

Aluminium ore is called bauxite . The bauxite is purified to produce aluminium oxide, a white powder from which aluminium can be extracted. The extraction is done by electrolysis. The ions in the aluminium oxide must be free to move so that electricity can pass through it.

Answer:

The bauxite is purified to produce aluminium oxide, a white powder from which aluminium can be extracted. The extraction is done by electrolysis. The ions in the aluminium oxide must be free to move so that electricity can pass through it.

I know I am a little late answering this but I still wanted to answer the question for you . I am not good at explaining things so I copied and pasted but I hope this helps.

plzzzz help me I will mark u brainist

Answers

Answer:

B. Aluminum has layers of electrons that can slide over one another.

Please help solve this question correctly, thanks :)

Answers

Answer: what question?

Explanation:

Answer:

theirs no question

Explanation:

no question or picture

20 PTS!!! Jack said that unprocessed oil is a mixture of many organic compounds. Jane said that unprocessed oil needs to be processed so that individual compound can be isolated. Who made the correct statement and why?

1. Jack is correct, unprocessed oil is a mixture of many organic compounds. Jane is not correct, they do not need to be processed to be used.
2. Jack is incorrect, unprocessed oil is not a mixture of many organic compounds. Jane is correct, unprocessed oil needs to be processed to be used.
3. Both Jack and Jane are correct. Unprocessed oil, petroleum, is a mixture of organic compounds that need to be isolated or separated to be used.
4. Neither Jack nor Jane are correct. Unprocessed oil, petroleum, is not a mixture of organic compounds and it does not need to be isolated or separated to be used.

Answers

Answer:

Explanation:

i am thinking 3 and 2 but i am gonna say it is 2

98.654321%

Answer:

Both Jack and Jane are correct. Unprocessed oil, petroleum, is a mixture of organic compounds that need to be isolated or separated to be used.

Explanation:

An unknown substance kept in a sealed container at room temperature has a pressure of 2 atm. When the container was opened, the substance was exposed to normal atmospheric pressure, 1 atm. Which change did the substance most likely undergo?

Neither the temperature nor the volume will change.

The volume will decrease.

The volume will increase.

The temperature will increase.​

Answers

Answer:

I took the test it's C.The volume will increase.

Explanation:

Since the pressure went down from 2 atm to 1 atm, the volume will go up! They are inversely related.

The change that the substance most likely underwent is that the volume will increase.

BOYLE'S LAW:

The relationship between the volume of a gas and its pressure is explained by Boyle's law.

Boyle's law states that the volume is inversely proportional to the pressure of a given gas. This means that as the pressure of a gas increases, its volume also increases and vice versa.

According to this question, an unknown substance kept in a sealed container at room temperature and a pressure of 2 atm changed to normal atmospheric pressure (1 atm).

This depicts that the volume of the gas increased since the atmospheric pressure decreased.

Learn more at: https://brainly.com/question/1437490?referrer=searchResults

1.- ¿Qué relación hay entre el uso óptimo de artefactos eléctricos en el hogar y el consumo de energía eléctrica? 2.- ¿Qué conocimientos de la física explican el uso óptimo de energía eléctrica? 3.- ¿Cómo se determina el consumo mensual de energía eléctrica? 4.- ¿Cómo se calcula el costo de este servicio?

Answers

Answer:

1- El uso óptimo de artefactos eléctricos en el hogar y el consumo de energía eléctrica tienen una relación de absoluto ligamen. Así, a mayor cuidado del consumo, y mejores los artefactos en su relación prestación/consumo, menor será el consumo de energía eléctrica en el hogar y, por ende, menor el gasto en el servicio.

2- El uso óptimo de energía eléctrica se explica a través de la física mediante el concepto de resistencia eléctrica, es decir, a mayor resistencia eléctrica, mayor será el consumo que el artefacto generará.

3- El consumo mensual de energía eléctrica se determina a través de la cantidad de kilovatios que cada hogar consume mensualmente. Así, a mayor cantidad de kilovatios (que es la unidad de medida de la energía eléctrica), mayor será el consumo.

4- El costo del servicio se valúa en función de los kilovatios consumidos en el periodo de medición. Así, cuando mayor sea el consumo mayor será el costo; incluso en algunos lugares, como Argentina, cuanto mayor sea el consumo de electricidad, mayor será el costo del kilovatio.

what does WHMIS mean?

Answers

Answer:

Workplace Hazardous Materials Information System

WHMIS is a short form for Workplace Hazardous Materials Information System. It is a comprehensive plan for providing information on the safe use of hazardous materials used in Canadian workplaces. Information is provided by means of product labels, material safety data sheets (MSDS) and worker education programs.

Answer:

Workplace Hazardous Materials Information System

Explanation:

Increasing the temperature of a gas mixture will decrease the kinetic energy of the gas particles.

Answers

Answer:

False

Explanation:

From what I know about water and gas, this is false

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