Chemistry Middle School

need right now, please help :)

Two planets are orbiting a star. Planet A is two times closer to the star than planet B. Which planet orbits at a higher speed?
a.) Planet A
b.) Planet B
c.) they both orbit at the same speed

Answers

Answer 1

Answer:

planet A

Explanation:

because it doesn’t have to go as far when it orbits

Related Questions

What kind of rocks would you expect to see on Mars? What evidence supports your response?

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Mars' surface is largely covered with basalt, a volcanic rock covering much of Earth's surface as well. Earth has large amounts of granite in its crust, which Mars appears to lack.
Based on the composition of the martian meteorites and the presence of plains and mountains that look like features produced by basaltic volcanism on Earth, geologists expected to find primarily basalts on Mars.

is copper a renewable resource? explain your reasoning

Answers

Yes copper is a renewable resource because it is the of the few materials that can be recycled/ reused.
Yes because cooper can be recycled

(Look only at question 4) Match each stage of a star with its definition.

(Look only at question 4) Match each stage of a star with its definition.

Answers

Black hole is E
Planetary Nebula is D
White Dwarf is E
Neutron Star is B
Supernova is A

Brainliest if correct LINKS WILL BE REPORTED

Brainliest if correct LINKS WILL BE REPORTED

Answers

Answer:

1.transparent

2.able to pass through

Explanation:

1. Transparent
2.able to pass through

Energy is inversely proportional to the wavelength of a wave. Which of these waves would have the greatest energy?

Energy is inversely proportional to the wavelength of a wave. Which of these waves would have the greatest

Answers

Answer: 2

Explanation:

The answer is actually one because of the height of the wave. Think about if you were moving a slinky like this with your hand. You would use more energy to move it further up and down rather than only a little bit of energy with number two. Hope this helps, have a great day! :)

The chemical symbol for sulfuric acid is H2SO4. How many atoms are contained in each molecule of sulfuric acid?
a.
3
c.
6
b.
5
d.
7

Answers

C.6

Look at it as H2 So4
H2 two atoms of that element
So4 four atoms of that element
And then up and you get six

Lake Eola is a sinkhole lake. What reasoning best describes how it formed?

An underground cave collapsed and sediment plug opened.

An underground cave collapsed and became plugged by sediment

A cut -off meander of a stream formed a crescent-shaped lake

A chunk of ice deposited by a glacier melted, and the glacial drift around the former ice block held the water in place.

Answers

Answer: A

Explanation: the first answer is more reasonable than the rest of them , hope this helped

Answer: A

Explanation: The first choice is the simplest way to put it, which makes it right.

Pls could help me complete the "standart form" part :(

Pls could help me complete the "standart form" part :(

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Answer:

I don’t know bro

Explanation: WHY DID U REMOVE THIS

How to work out the relative mass of potassium? What is the calculation? ( explained very easily )

Answers

Answer:

39

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Relative Atomic Mass = Mass of one atom
———————————
(1/12)th Mass of one C12 atom

I’ll give branliest to the best answer! Thanks!

Ill give branliest to the best answer! Thanks!

Answers

The moon fully covers the sun (looking at it from earth).
A solar eclipse happens when the moon gets in the way of the sun's light and casts its shadow on Earth. That means during the day, the moon moves over the sun and it gets dark. A partial eclipse, when the moon doesn't completely cover the sun, happens at least twice a year somewhere on Earth.

Chemical Weathering Rocks are changed by chemical and physical weathering. During chemical weathering, the composition of the rock is changed. Extreme heat and pressure within Earth can also cause rocks to change chemically. Physical weathering is the breaking down of rock by wind, water, ice, temperature change, and plants. It changes the shape and size of rocks, but it does not change their properties.


circle each example of chemical weathering


•Shale is worn into small pieces by the wind.
• Sandstone experiences heat and pressure and becomes quartzite.
• Calcium carbonate dissolves.
• Rocks break into pieces as they tumble down a mountain.

Answers

An example of chemical weathering are;

Sandstone experiences heat and pressure and becomes quartzite. Calcium carbonate dissolves.

What is Chemical Weathering ?

Chemical Weathering can be described as the type of weathering that do take place due to the breaking down of the rock particles into smaller pieces which is usually as a result of chemical process.

It should be noted that when the process is taking place it scould be due to the  Extreme heat and pressure  which can affect the composition of the particles and as  a result of this there could be formation of products from the break down.

Learn more about Chemical Weathering  at:

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The two examples of chemical weathering in these 4 options are
Sandstone experiences heat and pressure and becomes quartzite
Calcium carbonate dissolves
These are both examples of chemical weathering because the composition of these things changed. When shale is worn into small pieces, it is still shale, and rocks breaking into pieces as they tumble down a mountain are both examples of physical weathering because the weathering is not changing the composition of the rock.

please solve this for me

please solve this for me

Answers

The standard reduction potential for the half-reaction of Be^2+ + 2e^- -> Be is given as E^0 = 3.83 V.

For the half-cell Hg^2+ | Hg, the standard reduction potential is not provided in the given information. To calculate the electric potential for the voltaic cell, we need the reduction potential for the Hg^2+ | Hg half-cell.

A voltaic cell, also known as a galvanic cell or an electrochemical cell, is an electrochemical device that generates electrical energy through a spontaneous chemical reaction. It consists of two half-cells connected by an external circuit and a salt bridge or porous barrier that allows the flow of ions between the two half-cells.

Each half-cell consists of an electrode immersed in an electrolyte solution. The electrode is typically made of a metal or a conductive material, and the electrolyte is a solution containing ions that can participate in the redox (reduction-oxidation) reaction.

Learn more about electrochemical cell on:

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Answer:

The standard reduction potential for the half-reaction of Be^2+ + 2e^- -> Be is given as E^0 = 3.83 V.For the half-cell Hg^2+ | Hg, the standard reduction potential is not provided in the given information. To calculate the electric potential for the voltaic cell, we need the reduction potential for the Hg^2+ | Hg half-cell.

How was Aristotle’s model similar to Ptolemy’s model?

Both models stated that the planets rotate on their axes.
Both models stated that Earth is the center of the system around which other objects orbit.
Both models stated that the planets and objects in the solar system have small orbits called epicycles.
Both models stated that the Sun is the center of the system around which objects have elliptical orbits.

Answers

Answer:

Correct answer is B

Explanation:

I listened in class peeps

Aristotle’s model was similar to Ptolemy’s model because they both believed that: (B). Both models stated that Earth is the center of the system around which other objects orbit.

Meaning of a model

A model can be defined as a three dimensional representation of an idea or theory or belief.

A model can also  be said to be a representation of a philosophy or idea put up by an individual that can be used as an example.

In conclusion, Aristotle’s model was similar to Ptolemy’s model because they both believed that: (B). Both models stated that Earth is the center of the system around which other objects orbit.

Learn more about a model: https://brainly.com/question/17764105

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pls i need answers to the 1st, 2nd, and 3rd question

pls i need answers to the 1st, 2nd, and 3rd question
pls i need answers to the 1st, 2nd, and 3rd question
pls i need answers to the 1st, 2nd, and 3rd question

Answers

I believe number one has 2 valance electrons

number 2 has 1 valance electron

and number 3 has 8 valance electrons

valance electrons are the electrons on the outermost ring

I agree with the 1st answer

Please help me por favor :'(

Please help me por favor :'(

Answers

More volume, takes longer to heat all the molecules.

Which human activity contributes to the formation of acid rain

Which human activity contributes to the formation of acid rain

Answers

Answer is:

(C) burning fossil fuels such as coal and gasoline.

It also contributes to the formation of smog.

Burning fossil fuels such as coal and gasoline

We know that burning fossil fuels, such as coal and gasoline, is a significant human activity that contributes to the formation of acid rain.

When fossil fuels are burned, they release pollutants into the atmosphere, including sulfur dioxide (SO2) and nitrogen oxides (NOx).

These pollutants can react with water, oxygen, and other chemicals in the atmosphere to form sulfuric acid (H2SO4) and nitric acid (HNO3), which are major components of acid rain.

Therefore the correct answer is

Burning fossil fuels such as coal and gasoline

A.
The net force is acting in an upward direction.

B.
The net force is acting to the left.

C.
The net force is moving to the right.

D.
The net force is zero and all the forces are balanced.

A. The net force is acting in an upward direction. B. The net force is acting to the left. C. The net

Answers

Answer:

A. The net force is acting in an upward direction.

The answer you’re looking for is A

I just wanted to rant, this might get deleted. what is this, i know thats what both of them are. did it really expect me to come up with all of that?

I just wanted to rant, this might get deleted. what is this, i know thats what both of them are. did

Answers

Answer:

haha i totally get it

Yeah anyways what’s up

Emily has three rods which are all the same size and are all composed of a pure substance. She wants to find out if all three rods are made of the same pure substance. To do this, she adds a piece of wax with a little bead on top to the end of each rod. She then heats up the opposite end of one rod using Bunsen burner. Emily waits for the rod to heat up completely so that the wax at the other end melts and the bead drops. She measures how long it takes for the bead to drop. She then repeats this process with the other two rods. The diagram below shows Emily's experimental setup. The results of her experiment are also shown below.

Based on this experiment and the results, what can be concluded?
A.
Rods A, B, and C are all made of different substances.
B.
Rod B is made of the same substance as rod C.
C.
Rod A is made of the same substance as rod B.
D.
Rods A, B, and C are all made of the same substance.

Emily has three rods which are all the same size and are all composed of a pure substance. She wants

Answers

Answer: A

Explanation:

Rod A took 45 seconds.

Rod B took 30 seconds which is 15 seconds less than Rod A

Rod C took 60 seconds which is 15 seconds more than Rod A, and 30 seconds more than Rod B.

If all of them were made of the same substance, they all would have the same time, since they all have different times, then they all are made of different substances.

Develop models bonds can be placed on a scale that ranges from 100% ionic to 100% covalent. Use what you know about the types of bonds that specific elements tend to form to place each of the following compounds in the correct location on the scale: CO2, N2 , NaF, H2O

Answers

Answer:

Bonds can be placed on a scale that ranges from 100% ionic to 100% covalent.

CO2: CO2 is a covalent compound, with each carbon atom sharing electrons with two oxygen atoms. Therefore, it can be placed closer to the 100% covalent end of the scale.

N2: N2 is a covalent compound, with each nitrogen atom sharing electrons with another nitrogen atom. Therefore, it can be placed closer to the 100% covalent end of the scale.

NaF: NaF is an ionic compound, consisting of a sodium cation (Na+) and a fluoride anion (F-). Therefore, it can be placed closer to the 100% ionic end of the scale.

H2O: H2O is a polar covalent compound, with the hydrogen atoms sharing electrons with the oxygen atom, but the electrons are not shared equally, therefore the oxygen atom has a partial negative charge and hydrogen atoms have a partial positive charge. Therefore, it can be placed closer to the middle of the scale, between ionic and covalent.

Overall, the scale can be represented as follows:

100% Ionic <-------> NaF <-------> H2O <-------> CO2 <-------> N2 <-------> 100% Covalent

I’ll give the definitions for half of them ( 2 ) CO2 is Carbon dioxide and H20 is the scientific word for Water/ Aqua

How does an atom change if all of its electrons are removed?
p.s. I'll mark the first answer the brainliest if it is correct! ;)

a. The atom’s volume increases.

b. The atom’s mass increases.

c. The atom becomes positively charged.

d. The atom becomes negatively charged.

Answers

c. The atom becomes positively charged

if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom

C the atom becomes positively charged

Imagine holding a tennis ball in front of a heat lamp for five minutes. What do you predict will happen to the temperature along the “equator” of the ball compared with the top and bottom?

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The temperature on the equator of the ball would be hotter then the top and bottom of the ball

Answer: It Would Be The Warmest As The Light is Falling Directly Upon It. The Top And Bottom Would Be Much Cooler Than The 'Equator'.

Explanation:

What is an ellipse please help)

Answers

normal oval shape traced by a point moving in a plane so that the sum of the distance from the other points is constant.

In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.

Maybe they might use that math thing for Science.

Is fireworks a physical or a chemical change and why??

Answers

A fire work is a chemical change because it’s going to be created into a new substance

Answer:

The explosion of fireworks is an example of chemical change. During a chemical change, substances are changed into different substances. Another words, the composition of the substance changes.

Provide 3 examples of substances that are mixtures and list the substances in them.

Answers

Salt and water
Sugar and salt
Salt and pepper
Bleach Sulfrate Meth and pure vinegar Salt Sodium Cloride

Which of the following statements fully describes what an object may do when it experiences unbalanced forces? Select the two best answers.

A. It may change directions.

B. It will move at a constant speed.

C. It may slow down.

D. It may slow down or speed up.

E. It will stay stationary.

Answers

Answer:b

Explanation:

The answer is A, and c

Match the term to its definition (Lessons 6.03, 6.04 and 6.05)
(i can't fit this all without confusion)

Match the term to its definition (Lessons 6.03, 6.04 and 6.05) (i can't fit this all without confusion)

Answers

Answer: the first paragraph is rain forest biome and the 2nd one is arctic tundra biome and finally the last paragraph is ocean or marine biome

Explanation:

rain forests have warm temperatures and include alot of animals and plants , artctic tundra biome includes cold temperatures ice stuff and all that and ocean or marine biome is pretty much just the ocean with seals , whales and marine life yk.

Which components of a galaxy move in circular patterns or revolve around a star?
A . dust
B . Gas
C . Other orbiting object
D . sun

Answers

Answer:

C.

Explanation:

It's becase of the gavitational pull of a star or sun

The answer is c I hope that helps

Help I need an answer today

Help I need an answer today

Answers

Here you are! I hope it helps, and also for the ones I put a red ‘x’ it depends on how you round it.
Help I need an answer today

It's the day after... Oops

Joe, a hiker, stands at the top of a hill on a trail above the ocean. Joe's friend Dave is just starting out at the trailhead, which is at the beach.

Which statement about this scenario is accurate?

The air Joe is breathing is denser than the air at sea level.
The air pressure is higher where Joe is than where Dave is.
If Joe keeps going up, air pressure will continue to decrease.
The air Joe is breathing is denser than the air Dave is breathing.

Answers

Answer:

C. If Joe keeps going up, air pressure will continue to decrease.

C hope this helps and remember keep trying school is not easy
Other Questions
FILL IN THE BLANK. one of the major advantages of the ___ scientific method is that it allows investigation in natural surroundings. what role does energy play in the growth cycle What are the 3 main types of poetry? 5.) Which branch of government has the highest level of authority? A. Federal B. City C. StateD. County 6. is the world's oldest representative democracy. A. France B. Great Britain C. The United States D. Greece 7. All true democracies have free, fair, and competitive elections. A. True B. False In a democracy, people agree to abide by the rules that the majority of people want A. True B. False On a Windows 10 workstation, you want to use the Storage Spaces feature to create a logical drive. Which of the following components are used to configure Storage Spaces?Storage devices, which are physical drives such as SATA drives or external drives.Pools of storage, which are logically created from free space on storage devices.Storage spaces, which are logically defined units created from a pool of storage.ExplanationStorage spaces are composed of three components:Devices are the hard disks or other types of storage from which storage pools are created. You can use a variety of devices such as SATA drives and external drives to create storage pools.Pools of storage are created from the available disk space. A pool is a logical concept composed of the free space available on the specified storage devices.Storage spaces define logical units of space created from a pool. One or more storage spaces can be created from the pool. To the Windows system and the user, storage spaces appear as disks with typical drive letters (e.g., E: drive, F: drive).Parity, thin provisioning, and data resiliency are benefits of Storage Spaces. One of the 13 states in the Union, __________ chose not to send delegates to the Constitutional Convention of 1787. Visual sources should be used within the discussion to reinforce and explain the written information. And I came equation iron + oxygen iron oxide, iron oxide is the__of the reaction. As the most successful contestant in the history of the television show Jeopardy, Ken Jennings won more than $2.5 million. Suppose he invested $1.8 million in an ordinary annuity that earned 4.5%, compounded monthly. How much would he receive at the end of each month for the next 15 years Match each colored row or group on the table to the family of elements itrepresents. Determine which translations would mapFigure I onto Figure I. Critics of firebombs argued that they.A:were too inaccurate.B:were too expensive.C:would lead to too many civilian casualties.D:would ensure a U.S. victory. What is the value of the underlined digit of 65 Required information Use the following information for the Quick Study below. (Algo) [The following information applies to the questions displayed below.] BatCo makes baseball bats. Each bat requires 1.00 pounds of wood at $18 per pound and 0.40 direct labor hour at $30 per hour. Overhead is assigned at the rate of $60 per direct labor hour. QS 21-6 (Algo) Total Cost variances LO P2 Assume the actual cost to manufacture 120 bats is $7,440.00. Compute the total cost variance and identify it as favorable ori unfavorable. (Indicate the effect of the variance by selecting favorable, unfavorable, or no variance.) Actual cost Budgeted standard cost. Total cost variance $ $ Check my work 7,440 7,440 Add the suffix to the root, creating a new word.baby + -ish See Rule 1. How do you find new coordinates after translation? HELP QUICK PLS WILL GIVE BRAINLIEST The old donkey was full of_________, he didnt care about anything that happened to the farm A. ApathyB. DissentientC. Pre-eminentD. Maxim Please assist me with just the second question on the graph I have attached. A cannon is set to launch horizontally, (so = 0). If it launches off of a cliff that is 78.5 m tall, what time will it take for the cannonball to land? Include units in your answer. Answer: