Chemistry Middle School

Which star is the hottest and brightest star represented by the letter on the HR-Diagram?


A

B

C

D

E

Which Star Is The Hottest And Brightest Star Represented By The Letter On The HR-Diagram?ABCDE

Answers

Answer 1
A sorry if I am wrong
Answer 2
I think it is A. Hope this helps!

Related Questions

please help me with this multiply choice science question.

Answers

Answer:

The answer is seafloor spreading.

Explanation:

When the concept of seafloor spreading came along, scientists recognized that it was the mechanism to explain how continents could move around Earth's surface.

I hope this will help you !!!

Seafloor spreading !!

How many atoms of O are there?

Answers

Answer:

4?

Explanation:

1 .....................................

......

Some animals migrate, or seasonally move to a different place. In some bird populations, such as Canada geese, some birds migrate and some stay in the same area year-round. Migration can enhance the survival of individuals because it —
exerts a lot of energy.

Answers

The answer to this question is B

Cause and Effect What two factors does the force of gravity between two objects
depend on?

Answers

Answer:

When dealing with the force of gravity between two objects, there are only two things that are important mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.

Explanation

Please help me with this science question

Answers

Answer:

TRUE

Explanation:

The youngest rocks on the ocean floor are located at the oceanic ridge, an underwater mountain range formed from the spreading of tectonic plates

they are found at the oceanic ridge

How many atoms of Br are there?How many atoms of Br are there?

Answers

Answer:

8

Explanation:

There are 8 atoms of Br because there are two molecules of 4 atoms of Br. 4 x 2 = 8.

Answer: 1 mol Br contains 6.022×1023Br atoms;its mass is 79.90 g.

Explanation:

: I mole or bromine refers to 6×10^23 molecules of bromine. But 1 molecule of bromine has 2 atoms. Hence the atom count will be exactly twice.

Giving brainliest 4 best answer :> ~~

Answers

Answer:

there are blanks in the picture. what kind of winds are being asked about?

What happens to the ocean water after the condensation part of the water cycle?


1 The ocean water collects in lakes and streams.
2 The ocean water turns into water vapor.
3 The ocean water falls down as precipitation.
4 The ocean water runs off Earth's surface.

Answers

Answer is number two! His explanation was correct

Answer: A

Explanation:

Which of these elements has the greatest average atomic mass?4

Question 4 options:

C


Al


N


B

Answers

Think the answer is B too

What is the definition of a Macronutrient?

Answers

a chemical element (e.g., potassium, magnesium, calcium) required in large amounts for plant growth and development.
macronutrients are the nutritive components of food that the body needs for energy and to maintain the body's structure and systems

What are two ways to increase the strength of an electromagnet?

Add more turns of the wire to the solenoid.
Increase the amount of current that passes through the wire.
Decrease the amount of current that passes through the wire.
Decrease the turns of the wire to the solenoid.

Answers

Answer: Two ways to increase the strength of an electromagnet is

Add more turns of the wire to the solenoid.

and

Increase the amount of current that passes through the wire.

Explanation: Factors that affect the strength of electromagnets are the nature of the core material.

The diagram shows two people pulling a wagon in the same direction. One person is pullig with a force of 150 Newtons and the other person is pulling with a force of 200 Newtons.

The net force of the cart is





50 newtons east
200 newtons east
350 newtons east
37,500 newtons east

Answers

Answer:

350 Newtons

Explanation:

I think it’s 350 Newton east

PS: Sorry if I’m wrong

How many atoms of Fr are there?

Answers

the answer is: 87
i have to type other letters so blah blah blah... i hope this helps you:)
There are 87 atoms in Fr

Giving brainliest and thanks to best answer <333 :>

Answers

Answer:

C

Explanation:

radiation from the sun first warms the outer atmosphere (trophosphere)

convection(aka just heat moving through gas or liquid) brings the warmth down lower

conduction heats the ground

gl lol :))

The correct answer is C

Fill in the blank:

Tree roots speed up ____ by creating and widening cracks in rocks! Tree roots slow down ____ by holding sediments in place so they're not transported away as quickly.

Answers to pick:

1) Weathering, erosion
2) Erosion, weathering​

Answers

Answer:

Weathering, Erosion

Explanation:

Plants and animals can be agents of mechanical weathering. The seed of a tree may sprout in soil that has collected in a cracked rock. As the roots grow, they widen the cracks, eventually breaking the rock into pieces. Over time, trees can break apart even large rocks.

Tree root systems have a handful of large roots that branch out into a network of smaller roots that often extend out far beyond their branches do. These root systems prevent erosion by holding the soil in place and improving drainage which helps water get absorbed into the soil instead of just running over the top.

Hope this helps

All the love, Ya boi Fraser :)

Weathering and erosion

Giving brainliest if u answer correctly <3
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

Answers

methane and CO2 should be it
Carbon dioxide and methane are the two most abundant greenhouse gases in the atmosphere, they are of majority in this data.

The Sun does not heat Earth evenly. Areas at different latitudes receive a varying amount of direct sunlight.

Would a city located at 70°N latitude have a warmer or colder climate? Why?

Answers

Yeah he has a point where the sunlight hits us gonna be warm but bito always the sun may hit but it could be cold or the sun may hit and it could be warm or hot

PLZ ANSWER FOR BRAINLIEST

Answers

Answer:

C

Explanation:

The ozone layer absorbs ultraviolet rays from the sun.

It’s c, I’m sure of it

How do air masses flow?


from regions of low pressure to high pressure

it depends on the time of the day

from regions of high pressure to low pressure

whichever way the wind blows

Answers

How do air masses flow?

from regions of high pressure to low pressure

.

In general, cold air masses tend to flow toward the equator and warm air masses tend to flow toward the poles.

How are electromagnets temporary?
A.) They are only magnetic when an electric current runs through them.
B.) They are only magnetic when a gravitational wave runs through them.
C.) They are only magnetic when near a lodestone.
D.) They are only magnetic for two weeks.

Answers

Such magnets are called temporary magnets. An electromagnet is a temporary magnet. It is made by winding a coil of insulated wire round a soft iron core. When a current is passed through the coil, the magnetic field produced by the current magnetises the soft iron core. The soft iron core loses all the magnetism when the current is switched off.

So A

The answer (to this question) is A

Because Mg and O2 are both elements, no bonds were broken during the formation of MgO.


True or false

Answers

Answer:

false

Explanation

The chemical bonds were broken when creating the compound MgO.

False because this is not true

plzz help i will give brillants and stars and thx.

Answers

hdhdjejdhebdehxhshwhdb d nonsense
Vaporization turns liquid into gas,about the energy one I’m not completely sure but it’s energy added the particles slow down/confiscation transforms a gas into a liquid energy removed and the particles speed up

Only about half of the Sun’s energy that reaches Earth is absorbed. The rest is reflected back into space. Which surface is LEAST likely to absorb solar energy and why?
Select one:

a. rock, because it is solid

b. snow, because it is white

c. water, because it is liquid

d. asphalt, because it is black

Answers

snow probably........

Answer:

SNOW

Explanation:

It can melt, not a solid, not dark colored, does not move constantly

How do you think other galaxies might be similar or different from the Milky Way Galaxy?

Answers

Answer:

Going off of our own galaxy, one could assume that the universe is filled with other planets, moons, and stars. The interesting thing to me would be the shape of the Milky Way. It would be interesting to see how other galaxies have formed. As in, are they spherical, oblong, in the shape of a square?

There are also endless possibilities for undiscovered metal alloys in space, which is very exciting to me. The idea of space mining has been brought up many times before, but if there are new and useful metals, precious gems, or minerals that are yet to be discovered outside of the milky way, they could help restore Earth.

Other (well all if not most) galaxies are mostly made up of stars, planets, asteroids, and dust which is something that makes it similar to our galaxy .

They can be different by different amounts of types of stars, they might have other organisms that are alive just like us but they’d be different, yk?

That’s all i can think of sorry :/

I need help! Please give me an answer

Answers

You need to show us what you’re talking about first
All phases of the same substance have the same attraction

What elements is mercuric oxide composed of?

Answers

Answer:

Lavoisier reacted mercury with oxygen to form mercuric oxide

Binary compounds are compounds composed of just two elements. The simplest kind of decomposition reaction is when a binary compound decomposes into its elements. Mercury(II) oxide, a red solid, decomposes when heated to produce mercury and oxygen gas.

How many atoms of S are there?

Answers

Atoms of sulfur = 9.60⋅g32.06⋅g⋅mol−1×6.022×1023⋅mol−1 . Because the units all cancel out, the answer is clearly a number, ≅2×1023 as required.
There are 4 in total of S Im your question

Question NO LINKS!
Which air mass brings high temperatures and precipitation to Gwinnett County in late spring?

Answers

Answer:

Climate of Georgia. Maritime tropical air masses dominate the climate in summer, but in other seasons continental polar air masses are not uncommon.

Explanation:

An element that is a silver-colored liquid is?

a hydrogen
b mercury
c silver
d carbon

Answers

B. Mercury is the answer

Answer:

mercury

Explanation:

silver in color, and you can find in on the periodic table

1. Define a solution and explain why it is considered a Homogeneous Mixture.

Answers

a solution is a when a solvent is mixed completely with a liquid. it would be a homogeneous mixture because it is mixed together and you can not separate it.

Answer:

They contain two or more substances mixed together.

Explanation: That's all I know about it. I know the other answer is way better but I hope this helps

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