11. Explain Supergiants
are cool yet luminous___
because
(Circle the
correct answer.)
a. they produce more
energy
b. they are farther from
Earth
c. they are unusually large

Answers

Answer 1
The correct answer is C. They are unusually large. I would appreciate if you would mark this is brainlyest answer. Thank you!

Related Questions

Look at the image below:
Mid ocean ridge
Sea Level
Celing Tin
Marine Sediment
Oceanhatsak/bero) 57 kr
pug
NOOP
thospheremantle Plazburite)
0 Ops
FR00130 kn
asthenosphere mantie
peridotite)
What type of plate boundary is shown here?
convergent
divergent
transform

Answers

Answer:

divergent is when plates move apart from each other

Answer:

thats also divergent

you sent the same picture twice

Ummm help? From start to finish

Answers

can you upload a better pic?? thats kinda really hard to see and i would be able to help if you did

Can someone please explain to me what a Ecologist does for a living? (Or daily in their career?)

Answers

ecologists look at relationships between nature, studying the interactions between humans, animal and plants.

Answer:

Ecologists focus on the relationship of organisms within their environment. Ecology is a branch of biology (biology is the study of life). Given the broad scope of ecology, there are multiple sub-disciplines that an ecologist can choose to focus on. Since all living things (plants, animals, microbes) depend on other living things and a healthy environment to survive, ecologists may specialize in one aspect of an ecosystem. Examples include terrestrial (land), aquatic (water), applied (concepts and principles of ecology), conversation (management of biodiversity), and evolutionary (evolution).

Explanation:

Brainliest plz

calculate 28.1g of silicon to moles

Answers

Answer:

2.53•10^23 atoms

Explanation:

23 is the exponent btw

The bouncing of a wave off an object is called a what


Answers

Answer:

Reflection-energy waves bouncing off the surface of an object

Explanation:

What drives this process

Answers

Answer:

B

Explanation:

cool air never rises so not A

C would mean its getting warmer

and heat flows from warm to cool so not D

we are left with B

if my anwser helps please mark as brainliest.

The answer to your question is C.
Convection currents in the air.


This phenomena is called an offshore breeze. At night, land is cooling faster than water; the air above the land also cools and, therefore, its density grows. As a result, the pressure above the land is greater than above the water, and the air moves from the regions with higher pressure (land) to the ones with lower pressure (water).

Which of these is incorrect

Answers

Answer:

B

Explanation:

Ne has 10 electrons.

so the first shell will takes 2 (10-2=8)

the second shell will take 8 (8-8=0)

b would be wrong
bet

How many mL of a 1.00 M HCl solution would need to be added to 100 mL of 0.263 M ammonia to produce a buffer with a pH of 10.00. The pKa of ammonia is 9.25.

Answers

Answer:

3.97mL of 1.00M HCl must be added

Explanation:

The buffer of ammonia and ammonium ion follows the equation:

pH = pKa + log [NH₃] / [NH₄⁺] (1)

Where pH is the pH we want to obtain: 10.00

pKa is the pKa of the buffer: 9.25

[NH₃] could be taken as moles of ammonia

And NH₄⁺ moles of ammonium ion

When NH₃ reacts with HCl:

NH₃ + HCl → NH₄⁺ + Cl⁻

NH₄⁺ is produced. That means moles of ammonia are Initial moles of ammonia - Moles of HCl added

Moles of HCl added = Moles of ammonium ion

The total moles of the buffer are:

0.100L * (0.263mol / L) = 0.0263moles = [NH₄⁺] + [NH₃] (2)

Rewriting (1):

10.00 = 9.25 + log [NH₃] / [NH₄⁺]

0.75 = log [NH₃] / [NH₄⁺]

Replacing (2) in (1):

0.75 = log 0.0263 -  [NH₄⁺] / [NH₄⁺]

5.6234 = 0.0263 -  [NH₄⁺] / [NH₄⁺]

5.6234[NH₄⁺] = 0.0263 - [NH₄⁺]

6.6234[NH₄⁺] = 0.0263

[NH₄⁺] = 0.00397 moles = Moles HCl

To obtain these moles we must add:

0.00397 moles HCl * (1L / mol) = 0.00397L =

3.97mL of 1.00M HCl must be added

4. How is a lead storage battery recharged?

a. It is heated up.

b. The pressure on it is increased.

c. A direct current is applied to it.

d. A magnet is held close to it.

Answers

The answer is c Yep Allll day
The answer is c because the lead storage evolves around the current that is directed towards the aplience

BRAINLIST!!

Which of the following describes a process of weathering?

A.
Rocks along the coast are broken up by waves crashing into the shore.
B.
Glaciers carry boulders from mountaintops to low-lying plains.
C.
Mud, silt, sand, and pebbles are carried across the region by running water.
D.
The wind lays down sediment to form small hills called dunes.

Answers

Answer:

D or C.

Explanation:

Sorry if its wrong

Answer:

A. Rocks along the coast are broken up by waves crashing into the shore.

Explanation:

How is wind energy more environmental friendly than heat energy?

Answers

Answer:

Wind is an emissions-free source of energy

Overall, using wind to produce energy has fewer effects on the environment than many other energy sources. Wind turbines do not release emissions that can pollute the air or water (with rare exceptions), and they do not require water for cooling.

Explanation:

How many grams of carbon is needed to react with hydrogen gas to produce 59.8 grams of acetylene (C2H2)?

Answers

Answer:

[tex]55.1657[/tex] grams/mol of carbon is needed to react with hydrogen gas to produce 59.8 grams of acetylene (C2H2)

Explanation:

The molecular weight of acetylene is  26.04 g/mol

Molecular weight of carbon is equal to 12.011 g/mol

Two carbon atom produces one acetylene molecule.

Thus, 2 * 12.011 g/mol of carbon is used to produce  26.04 g/mol of acetylene,

Amount of carbon required to produce 59.8 grams of acetylene

[tex]\frac{2*12.011}{26.04} * 59.8 \\= 55.1657[/tex]grams/mol

[tex]55.1657[/tex] grams/mol of carbon is needed to react with hydrogen gas to produce 59.8 grams of acetylene (C2H2)

Guys pleaseeeee help:
- Which element is a member of the alkaline earth metals and has 12 neutrons?
- A burnt piece of toast is covered in this element. It is the fourth most abundant element and makes up many living things.
- Which element is an inert gas found in group VIII that produces a red glow in lights?

Answers

Answer:

Carbon- A burnt piece of toast is covered in this element. It is the fourth most abundant element and makes up many living things.

Magnesium- Which element is a member of the alkaline earth metals and has 12 neutrons?

Neon- Which element is an inert gas found in group VIII that produces a red glow in lights?

Ha hatdog hatdog hatdog because?​

Answers

Answer:

what's this? s*it fellow

uska dil ker raha tha isleye

Hey I'm Chloe,
Does anyone know How many sides and Octagon has?
I Tried Researching it but Nothing came up.

Answers

An octagon has 8 sides. Octo means 8.

17.The column that an element is located in tells us

a.the total number of valence electrons an atom has.
b.the total number of energy levels an atom of that element has.
c.the highest energy level an atom of that element has.
d.both b & c.

Answers

a. The total number of valence electrons an atom has.

1. How many moles does 24 g of Mg contain?​

Answers

Explanation:

1 mole Of atom = GAM

MG=24g

GAM of Mg=24g

Therefore 24g=mole

Not My answer But I saw That You needed it.

Credit zeeshanfazil

thank him for the answer!

Which of the following statements are true of groups on the periodic table?

Check all that apply.

A. Elements in a group have the same number of protons.
B. Elements in a group have the same number of electron shells.
C. Elements in a group have similar properties.
D. Elements in a group have the same number of neutrons.

Answers

Answer: it’s only c

Explanation:

The correct statement regarding groups on the periodic table is statement C which is elements in a group have similar properties.

A. Elements in a group may have different numbers of protons, as the group represents elements with similar valence electron configurations, but the number of protons in the nucleus can vary.

B. Elements in a group do not have the same number of electron shells. Elements within the same group have similar outer electron configurations, which determine their chemical properties. The number of electron shells increases as you go down the group.

C. Elements in a group have similar properties. Elements within the same group share similar chemical behavior due to their similar outer electron configurations. This similarity leads to recurring patterns in their physical and chemical properties.

D. Elements in a group may have different numbers of neutrons. The number of neutrons can vary within a group as different isotopes of an element can exist, which have the same number of protons but different numbers of neutrons.

Therefore, the correct option is option c

Learn more about modern periodic table here:

https://brainly.com/question/14263046

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How can you prove that air is a matter ?

Answers

Answer:

One way to prove that air is made of matter is to blow up a balloon. Before you add air into the balloon, it is empty and shapeless. When you puff air into it, the balloon expands, so you know it is filled with something—air is taking up space. You'll also notice that a balloon filled with air sinks to the ground.

Explanation:

5. Predict which element would have a higher electron affinity: silicon or arsenic. Support your prediction with an explanation.

Answers

Answer:

Silicone

Explanation:

According to periodic trends, electron affinity increases as you go right and decreases as you go down. Silicone is above arsenic so I would expect it to have a higher electron affinity.

What happens during meiosis that does NOT happen during mitosis?
A new cells are formed
B two rounds of cell division
C DNA is passed on to the daughter cells
D parent cells grow in size before division
please help

Answers

Answer is B two rounds or cell division

What would the [OH-] of a solution that has a pOH of 2.7 be?

Answers

Answer:

The [OH⁻] of a solution that has a pOH of 2.7 will be 2*10⁻³

Explanation:

The pOH (or potential OH) is a measure of the basicity or alkalinity of a solution.

pOH indicates the concentration of hydroxyl ions [OH-] present in a solution. In this way, pOH is defined as the negative logarithm of the activity of hydroxide ions, that is, the concentration of OH- ions:

pOH= -log [OH⁻]

In this case, pOH has a value of 2.7. Replacing:

2.7= -log [OH⁻]

and solving:

[OH⁻]=10⁻² ⁷

you get:

[OH⁻]≅ 2*10⁻³

The [OH⁻] of a solution that has a pOH of 2.7 will be 2*10⁻³

Practice Problem #2: How many atoms
of Ba are in 7.8 moles of Ba?

Answers

[tex]7.8 \: mol = \frac{6.02 \times {10}^{23} atoms}{1 \: mol} = 4.6956 \times {10}^{24} \: atoms[/tex]

round as you wish.

Which change will cause gravitational force between and a soccer ball to increase?

Answers

Answer:

Moving the balls closer together. The distance decreases and force increases.

Look at the image below:
Mid ocean ridge
Sea towe
Marie Sedie
Osta 7m
WORM
PC
hohe materieur
Tron
Orope
thenosphere
perduta
What type of plate boundary is shown here?
convergent
divergent
transform

Answers

Answer:

Divergent

20 words

Answer:

divergent...........................

Una sola dosis de etanol, C2 H5 OH, eleva el nivel intracelular de iones calcio. Los iones Ca2+ liberados por el etanol 0,10 M matan las células del hígado de las ratas. Expresa esta concentración en gramos por litro. ¿Cuál es el porcentaje en volumen? (La densidad del etanol es de 0,785 g/mL.)

Answers

Answer:

No se bro cual se la respuesta .......

Explanation:

lo siento(

19)
Why are unique atomic spectra produced by different elements?

Answers

When atoms are excited they emit light of certain wavelengths which correspond to different colors. Each element produces a unique set of spectral lines. ... Since no two elements emit the same spectral lines, elements can be identified by their line spectrum.

Most of the mass of an atom is found in

Answers

Answer:

Most of the mass of an atom is found in the nucleus.

Explanation:

please help me! (brainliest)

Answers

Answer:

It is A

Explanation:

If you tested two samples of a particular pure substance, what would you find?

Answers

Answer:

The properties of a pure substance can be used to determine whether a sample is a pure substance or mixture because the characteristic properties of matter can be used to identify a sample. The result is a mixture called a composite.

Explanation:

Pure substances contains their own molecules only and not any  impurity. Thus, when we tested it  only shows the properties of its own.

What are pure substances?

Pure substances are substances containing its pure composition without any impurities. For example water, fruits, acids etc. are pure substances and they does not have a combination other substances.

Mixtures are the combination of two or more pure substances, and the can be heterogenous or homogenous. Whereas, pure substances homogenous only thus forming only one phase.

When we tested mixtures qualitatively, they shows the properties of each  individual components in it. Whereas, pure substances give inly its own characteristics.

To find more on pure substances, refer here:

https://brainly.com/question/24462192

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Genomic imprinting may involve a single gene, a part of a chromosome, or a whole chromosome. Indicate if the following statements are true or false regarding this phenomenon 1. Genomic imprinting is permanent in the somatic cells of a given individual. _____________2. Genomic imprinting is permanent and affects future generations. ____________3. Methylation is the chemical change underlying genomic imprinting. _____________4. If a gene is imprinted, the offspring can express both the maternal and paternal allele. _________ Caculate the difference between the greatest and least landing values. find the 7th term of 4,5,6.25 What is the value for x What is the value for y There are 5,280 feet in a mile. If a cloud is 5.3 miles above theground, about how many feet above the ground is it? The Scenario: Your cousin Caleb has a dog-walking business, and you'd like to start one in your own neighborhood. Caleb has had his business for more than a year and has experimented with different prices for his services. He is willing to share what he has learned with you as you begin to plan your business. The Project: Use the information provided in the Performance Task to learn more about your competition and the costs of your business. See what you can discover by looking at Caleb's sales records to help you decide how to set up and price your own dog-walking services. Use the questions below to help you gather information and get your new business off to a profitable start. Understanding the Competition 1. Explore the three competitors in your area to learn more about the services they offer and how they reach their customers. Fill in the table below to help you compare their businesses. (12 points: 1 point for each table cell) Outward HoundA1-Pet Services Debbie's Daily Dog Walks What services does the business offer? What do you know about the type of business and its staff? Who are the target customers? How much does the business charge?2. Now that you know a bit about the competition, it's time to get more specific about your business offering. (6 points: 3 points for describing services, 1 point for each of the other questions) List three services you would like to offer. Do any of these services require you to buy special items? If so, what would you need to buy? Describe the type of customer you believe your business will appeal to and explain why. If you had to guess now, how much do you think you should charge for a 30-minute dog walk? Calculating Your Business Costs 3. Use the table below to summarize your monthly business costs. Record each option you choose in the "Options selected" column. (9 points: 1 point for each completed table cell) Cost type Total cost per month Options selected Advertising Goods Transportation Licensing TOTAL 4. Explain the choices you made that determined your business costs in each cost category. (4 points: 1 point for each explanation) In your explanation, be sure to describe: Your advertising choices The goods you will purchase Your transportation needs Whether you chose bonding The reasons for your choices Advertising: Goods: Transportation: Bonding:loading...With every price decrease of $1, Caleb (gained/lost) ___________ customers. 6. Write a profit equation for Caleb's business. Profit = Price Number of customers Cost To write the profit equation, use the following assumptions: Express price and number of customers in terms of the same variable, x. Let x = the change in price from the price that gave Caleb the greatest revenue. Use the information in the table to answer these questions. (9 points: 1 point per blank) a. At what price did Caleb make the most revenue per month? How many customers did he serve at that price? Price: _________ Number of customers: _________ b. Write an expression for price. Use the price identified in part a. Let x represent the change in Caleb's price from this price. Price = __________ + ____________ c. Write an expression for the number of customers. Use the number of customers identified in part a, and the decrease in number of customers when Caleb increases his price by $1 (from question 5). Number of customers = _________ __________x d. Write Caleb's profit equation. Use the expressions you identified in parts b and c. Assume Caleb's costs amounted to $200 each month. Profit = Price Number of customers Cost Profit = ___________ ____________ _________Maximizing Your Profits You've done a lot of research. Now it's time to try to maximize the profit of your new business. 7. Write and simplify your personalized profit equation. Complete the profit equation, using the price and customer expressions from question 6 and your total cost from question 3. (6 points: 1 point for each element: price, number of customers, and cost; 3 points for writing and simplifying the profit equation) 8. 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Read this sentence."Threatening, humiliating, or harassing another person using a computer, a cell-phone, or another electronic device is cyberbullying."As used in the sentence, harassing most nearly meansGroup of answer choicesto compliment someoneto encourage someoneto attack someoneto help someone What play does Hamlet want the players to perform? One number exceeds another by 5. The sum of the numbers is 89. What are the numbers ? fill the correct article daily is dash capital of India