SOMEONE PLS HELP ASAP IM DESPERATE

Answers

Answer 1

Answer:

Wave

Explanation:

Related Questions

Imagine you have a radioactive sample containing both virtualium and decayed atoms of virtualium. After analysis you find it contains 10 atoms of virtualium and 40 decayed atoms . How old is your sample? Hint you must use the half life of virtualium determined earlier. BTW the half life of virtualium is 12

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Answer:

COULD WE PLEASE GET THIS ANSWER?????

Explanation:

Can someone help me pls

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1. E
2. C
3. D
4. B
5. A

Copper sulfate, when it is dissolved in water, has a blue color. When steel wool is mixed with a copper sulfate solution, the steel wool disappears, a brownish solid forms, and the color of the solution changes from blue to green.

Choose one answer that gives the best evidence that a chemical reaction took place.

A. The color change from blue to green happens in nature.

B. The disappearance of the steel wool shows that a new substance has formed.

C. The solid precipitate is a waste product in the reaction.

D. Energy is lost in this reaction like all other reactions.

Which answer did you choose? Explain your reasoning.

Answers

Answer:

A. The color change from blue to green happens in nature.

Explanation:

The color change is an indicator of a chemical reaction that has occurred. Although color changes are not necessarily good diagnostic tool to measure if a chemical reaction has occurred or not.

In this reaction, color changes is quite an effective tool Chemical changes usually involves the formation of a new product from the chemical reaction. Also, the steps are not easily reversible.For this reaction, color change is the most appropriate signal for a chemical change.

The evidence that shows that a chemical reaction has taken place is the disappearance of the steel wool shows that a new substance has formed.

The electrochemical series is arrangement of elements in order of decreasing reactivity. It is important to note that the elements that are high up in the electrochemical series can displace the elements that are lower in the series from their aqueous solution.

Steel contains iron which lies above copper in the electrochemical series hence a chemical change occurs when steel dissolves in the copper solution.

Hence, the evidence that shows that a chemical reaction has taken place is the disappearance of the steel wool shows that a new substance has formed.

Learn more: https://brainly.com/question/8646601

BRAINLIEST IF RIGHT

A group of students observe their teacher modeling how a river carries sediments downstream to eventually create a delta. Which of the following scientific questions can best be answered by this model?

A.
What is the cause and effect relationship between weathering and cementation?

B.
How does chemical weathering of rocks in a river create a delta?

C.
What is the cause and effect relationship between erosion and deposition?

D.
How does a river weather rocks into sediments?

Answers

I think is c
Am not sure

Answer:

C What is the cause and effect relationship between erosion and deposition?

Explanation:

i hope this help

If the concentration of Sn2+ in the cathode compartment is 1.10 M and the cell generates an emf of 0.22 V , what is the concentration of Pb2+ in the anode compartment?

Answers

Answer:

[Pb] = 1.1*10^-8

Explanation:

The Eo values of the half cell reaction of the following are

Pb2+ + 2e- ==> Pb . . .Eo = -0.13 V

Sn2+ + 2e- ==> Sn . . .Eo = -0.14 V

Sn+2 is at cathode(reduction)compartment and Pb+2 is at anode(oxidation) compartment.

the overall reaction will be

Pb ==> Pb2+ + 2e- (oxidation) Eo = +0.13 V

Sn2+ + 2e- ==> Sn (reduction) Eo = -0.14 V

----------------------------------------------------------------------

Pb + Sn2+ ==> Pb2+ + Sn Eo cell = -0.01 V

Qcell = [Pb+2] / [Sn+2] ( pure Sn , Pb do not appear in Q

Ecell = Eo -0.059/n* logQ

0.22 = -0.0.1 - 0.059/2 logQ

0.23 = -0.0295logQ

LogQ= -7.796

Q = 10^-7.796≈ 1/10^8

[Pb+2] / [Sn+2] = 1/10^8

[Pb] = 1.1*10^-8

SCIENCEEEE!!!! HELPPPPP MEEEE OUTTTT!!!!

Answers

b and e

first we need to balance the NH3 hence first we do E and multiplying the coefficient by 2. that will leave us with N2+H2–>2NH3.
N2 and H2 is balanced and now all that is left to do is the balance H2 by 3 as there is 6H on RHS hence we need 6H on LHS

How many significant figures are in the number 4.02 x 10^-9 ?

Answers

Answer:

3 sig figs

Explanation:

3 cuz I’m smart and I know everything:)

two hydrogens atoms and one oxygen atom together are?

Answers

Answer:

h20 water is the answer

What are the products in a chemical reaction?

A. The chemical formula of the substances

B. The new substances that are produced

C. The substances that interact

D. What is left over after the reaction

Answers

The new substances that are produced

pls help

1. Calculate the mass of iron needed to make 16.25g of iron chloride (3
marks)

2Fe + 3Cl2 → 2FeCl3

Answers

Explanation: 5.6g

the molars of FeCl3 is [tex]\frac{16,25}{56+35,5.3}= 0.1[/tex] (mol)

have:

2Fe + 3Cl2 ⇒ 2FeCl3

0.1 <= 0.1

=> the molars of Fe is 0.1 mol

=> the mass of Fe is 0,1.56 = 5.6 (g)

The mass of iron required to make 16.25g of iron chloride is 5.59 g.

What is the limiting reagent?

A limiting reagent can be defined as a reactant that is fully exhausted from the reaction mixture at the completion of a reaction.

When reactants are not taken in stoichiometric quantities, the limiting reactant will decide the amount of product will be formed in a reaction from the reactants.

Given, a balanced chemical equation of the reaction between iron and chlorine is:

2Fe + 3Cl₂ → 2FeCl₃

Given, the amount of iron chloride = 16.25 g

The molecular mass of the iron chloride = 162.2 g/mol

The number of moles of iron oxide = 16.25/162.2 = 0.10 mol

2 moles of iron chloride produced from iron = 2mol

0.10 mol of iron chloride produced from iron = 0.10 mol

The mass of the iron required = 0.10 × 55.85 = 5.59 g

Learn more about limiting reagents, here:

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True or False:
C + 02 - CO2
In the chemical reaction above, the coefficient of oxygen is 2.
False
True
Check it
skip

Answers

Answer:

true the coefficient of oxygen is 2

Answer:

Explanation:

True

In a lava lamp, a waxy substance rises and falls repeatedly. What causes the waxy substance to rise? Check all that apply. The waxy substance is cold. The waxy substance is warm. The waxy substance is less dense than the surrounding liquid. The waxy substance is more dense than the surrounding liquid. Convection is occurring.

Answers

Answer:

The waxy substance is warm.

The waxy substance is less dense than the surrounding liquid.

Convection is occurring.

Explanation:

Convection involves heat transfer by the actual movement of the particles of a substance.

When the wax is heated, the waxy substance becomes warm and rises in the lamp. The warm waxy substance is less dense than the surrounding liquid, this process of rising and falling is as a result of convection occurring in the lava lamp.

Answer:

The person above (or below) me is correct, the answer is:

B.) The waxy substance is warm.

C.) The waxy substance is less dense than the surrounding liquid.

E.) Convection is occurring.

Explanation:

I did the assignment on Edge, 2022.

(See the attachment below.)

Hope this helped, good luck on your quiz! <3

Why is magnesium malleable?

Answers

Answer:

It is an Alkaline Earth Metal

Explanation:

Metallic bonding results from the delocalization of electrons from the parent metal atom so that positive ions are conceived to swim in a sea of electrons. This view of metallic bonding accounts for the malleability, and ductility of metals, as well as their properties of thermal and electrical conduction.

which was an important part of dalton's atomic model

Answers

All matter is made of atoms. Atoms are indivisible and indestructible. 3) Compounds are formed by a combination of two or more different kinds of atoms. 4) A chemical reaction is a rearrangement of atoms.

This app is for helping people so please help me with these 2 questions

Answers

Answer:

1. The organism becomes ill or may die.

2. Pathogens.

Explanation:

(1) When an organism fails to maintain homeostasis, the organism typically becomes ill, and they will die if homeostasis cannot be re-achieved.

(2) A pathogen is a virus that can cause diseases.

help help help help help help help help help help please!!! worth 20 points please helppppp!!!!

Answers

Explanation:

here

Al is 2

so is 6

and more you can do it

When a drawing of a circle made in the center of a piece of paper with a black marker gets wet, the marker bleeds, and as the water moves through the paper the ink separates into several colors.

What method of separation does this describe?
evaporation
distillation
filtration
chromatography

Answers

Answer:

D) Chromatography

Explanation:

Answer: It is D. chromatography.

Step-by-step explanation:

when water or dye passes through a medium and changes color then that means it must be chromatography.

When electricity is produced from coal the chemical energy in coal is changed to ___ energy

Answers

Answer: electrical energy

Explanation:

According to law of conservation of energy, energy remains conserved. It only transforms from one form to another.

Chemical energy is the energy stored in the bonds of molecules.

Electrical energy is the energy possessed by a body by virtue of movement of electrons.

Thus when When electricity is produced from coal the chemical energy in coal is changed to electrical energy

(help needed please)What is the approximate difference in elevation from point C to point D?

A) 400

B) 200

C) 1500

D) 1100

Answers

Answer:

This question is incomplete

Explanation:

This question is incomplete because of the absence of attachment to show what is being referred to in the question. However, the difference in elevation from two points on the same "plane" can be calculated by subtracting the total distance from where the measurement started to point C from the total distance from where the measurement started to point D. Both measurements must have started from the same origin (usually zero).

The following reaction is a
reaction.

Answers

Where is the picture?

Answer:

Explanation:

Which of the following pairs of elements would most likely combine to form a salt?
Ne and F
Ca and Cs
C And cl
Mg and cl

Answers

I think it’s Ca and Cs

What happens to rock during subduction please help I will give you Brainlyest

Answers

Answer: Here is the answer!! :)

Explanation:

A subduction zone is a region of the earth's crust where one tectonic plate moves under another tectonic plate; oceanic crust gets recycled back into the mantle and continental crust gets created by the formation of arc magmas. ... This water lowers the melting point of mantle rock, initiating melting.

Here is a graph to understand it better!:)

What are some different types of stimuli?

Answers

Answer:

Mechanical, thermal,chemical

Explanation:

Answer:

chemical, temperature, pressure, and light

Explanation:

Consider the reaction Upper A u (upper O upper H) subscript 3 plus upper H upper I right arrow upper A U plus upper I subscript 2 plus upper H subscript 2 upper O.. Label the half-reactions as oxidation (use "O") or reduction (use "R"). 2 upper i right arrow upper I subscript 2 plus 2 e superscript minus. Upper A u superscript plus 3, plus 3 e superscript minus right arrow upper A u.

Answers

Answer:

2I- ---> I2 + 2e- = O

Au+3 + 3e- ---> Au = R

Explanation:

The first loses electrons, so it is Oxidized, and the second one gains electrons, so it is Reduced. (Also I just did this and saw the answers were O and R respectively)

Answer: o, r

Explanation:

i did the assignment on edge on 2022

What 2 things define the state of matter?

Answers

Answer: gas are well separated with no regular arrangement.

liquid are close together with no regular arrangement.

solid are tightly packed, usually in a regular pattern.

its just gas liquid and solid pls make me brainliest

Explanation:

Oxygen and sucrose chemical equation
O2 + C12H22O11 - ->
This is a combustion reaction and requires input energy. PLEASE HELP ME! It also needs to be balanced!

Answers

Answer:

11011111111111111111122

A group of students conducted an experiment to find out what happens to the force of magnetism between two magnets as the distance between them increases. They used the equipment you see in the illustration. They
placed spacers between the magnet in the cup and the magnet on the post to increase the distance between them. They used washers as units to measure how much force it took to pull the two magnets apart.

Answers

Answer:

Explanation:

Porque yo creo que asi ) :

Vinegar and milk forming solid clumps of solid (curds) is a

Change in temperature

Formation of gas/bubbles

Formation of precipitate

Release of energy (fire/light)

Change in color

Answers

Answer:

Formation of precipitate

Answer:

all of them are correct on EDGE

Explanation:

i just took the assignment

The moon has less gravity than we have here on Earth TRUE OR FALSE

Answers

Explanation:

obviously true the gravity of moon is 1/6th of the Earth

Help!!
What shape would SeH2 have? Draw the molecule.

Also, if you are good with this kind of thing, please answer my other questions too!

Answers

hi here is a picture of the shape it would be!

Other Questions

The seventh grade students are having an end-of-year party in the school cafeteria. There are 754 students attending the party. Each table seats 6 students. How many tables are needed to seat all of the students? Fill in the blanks to complete the sentences Determine the number of tables by dividing_______ by_______. If there is a remainder, the answer will need to be rounded_______. There ______a remainder, so________ tables are needed. if a bank has 120 million in deposits and 7 million in reserves with a reserve requirement of 0.05 how much its required reserves Neutral technical progress allows a firm to A. produce the same amount of output with the same inputs. B. produce more output with the same inputs. C. use less labor to produce more output. D. use less capital to produce more output. PLEASE HELP BRAINLIEST IF CORRECTRead the introduction to an outline for a narrative essay.Introduction: Britains tax on tea in the colonies was unfair.Which of the following is the best thesis to include in this introduction?A: As colonists, it was our duty to protest the tea tax that represented taxation without representation.B: As colonists, we had the right to disobey any taxes that we disliked and did not want to pay.C: As colonists, we should have been able to set our own taxes on tea we received from Britain.D: As colonists, we should not have had to pay any taxes to Britain because that is our right. Which of the following has a descriptive setting that creates an atmosphere? A. Jenny woke up just in time for sunset. The sky was a mix of pink and gold as the sun seemed to sink into the sea. The breeze was still warm and Jenny took a deep breath. The salt sea air filled her nose. She looked around and noticed that the other beach goers had gone, but she did not feel alone. No, as the last rays of sunlight created colorful outlines around the clouds, she felt that this sunset was special. That is was just for her. B. Zach hated his new school. Huge with a lot of different hallways and classrooms, he found it hard to meet new people, and no one tried to get to know him. The teachers had him sit in the back of the dull classrooms, due to alphabetical seating, and he just watched the clock on the wall as the minutes ticked by. He found it hard to hear the teacher from the back of the room and often found himself lost and distracted. C. The race was a difficult one. Twelve punishing miles that wears out the best of athletes. However Britany would not be stopped. She did not care if she hard to run a hundred miles, she was going to finish. D. It was Christmas Day. Olivia woke and rushed down the stair to wake up her parents. Little did she know, her parents were already awake. They were waiting for her and behind them as an odd, bike shaped present. Why did pan fill de narvaez go to Florida this one: Halloween is an annual holiday celebrated each year on October 31. Halloween is known for costumes, pumpkins, trick-or-treat, black cats, witches, ghosts and other spooky traditions. Although the traditions of Halloween are well-known, its origins are not. Halloween as we know it today originates from both Celtic and Christian traditions. The origin of the holiday dates back 2,000 years ago with the Celtics ancient festival called Samhain, which was celebrated on October 31 and marked the end of summer and the coming of winter. This festival was celebrated the night before their new year, November 1. According to Celtic mythology, the night before the new year the veil between the worlds of the living and dead was blurred, making it easier for spirits to pass through. The Celtics dressed in costumes of animal skins, had a bonfire and burned crops as sacrifices to their gods in order to keep the evil spirts away. Halloween is also rooted in Christian tradition. In 690 A.D. Pope Boniface IV dedicated the Pantheon to honor Christian martyrs. This created the Catholic feast of All Martyrs Day. Years later Pope Gregory III would change the feast to All Saints Day to honor all of the saints. This feast is celebrated on November 1, the same day as the ancient Celtic new year. In 1000 A.D. the church would make November 2 All Souls Day as a day to honor the dead. This day was very similar to the Cetltic festival of Samhain, with costumes of saints and angels, bonfires, and honoring the dead. The Christian connection to Halloween has a lot to do with its name. The name Halloween stems from the nickname for the day before All Saints Day: All Hallows Eve. Hallow means holy person, in reference to the saints. The een in Halloween is a contraction for eve. All Hallows Eve eventually was shortened into Halloween and was popularized by a poem by Robert Burns called Halloween. Over the years, Halloween has morphed into a secular holiday with the distinct traditions we all know and love today. Probably most notable is the jack-o-lantern, which has its own history. The tradition of pumpkin carving comes from an old Irish legend of Jack, a man who tricked the devil and got him stuck in a tree. According to the legend, Jack let the devil go but the devil promised he would never allow Jacks soul to enter hell. When Jack died and was denied entry into heaven, the devil kept his promise and denied Jack entry into hell. When Jack asked how he was supposed to leave, the devil threw him a flaming ember to help him see his way out. Because it was his favorite food, Jack always had a turnip with him. He hallowed out the turnip and placed the ember inside, lighting his out throughout the world looking for a final resting place with his jack-o-lantern. On All Hallows Eve, the Irish would hallow out turnips, beets, and gourds to ward off evil spirits and keep Jack away. When the Irish immigrated to America, they started to use pumpkins instead as they were much larger. Why do you think Kings I Have a Dream speech is remembered as one of the most significant speeches in American history? Explain what makes the speech memorable and how it contributes to the ideal of an American society. how did a new national culture emerge that combined American elements, European influences, and regional cultural sensibilities 13. The plane ride that never endsIve Been Flying for almost Thirty Hours and The Flight Attendants Wont Stop CryingThirty hours ago I hopped on a late-night flight from New York heading to Los Angeles. After boarding I saw that I had an entire row to myself. Take off passed without incident, and soon I was stretched out for a nap across the row.I slept for a few hours, I dont know how long, but I woke up to some severe turbulence. Its possible that the lights in the cabin went out for a moment, but I was so disoriented that its hard to say.I checked my phone to see that it was 4:03 AM, which I figured gave me about an hour until we landed. When I looked out my window, I was shocked to see nothing but wide open ocean. My jaw dropped; theres obviously no ocean between New York and Los Angeles.I hit the button to call the flight attendant and spent the next few minutes wracking my brain for a lake that couldve been possibly been big enough to explain what I was seeing. I jumped when the attendant flipped off the light. She was grinning from ear to ear, and tears were pouring down her cheeks.How can I help you sir? she asked.I froze for a moment at her reaction before deciding to just ask my question. Where are we? Why does it look like were flying over an ocean?She wiped her cheeks to clear the tears, still grinning wildly. Sir, well be landing in about an hour.I, uh, OK, thank you, I said.After she left I checked the clock on my phone again. 4:03 AM blinked back at me.It hadnt changed.I had to have been waiting with my call light on for at least five minutes. How was it possible that it hadnt changed at all?I opened up my laptop and saw it too displayed 4:03 AM. I pulled out my phone, started a stopwatch in the app, and spent the next two hours looking back and forth between the clocks, waiting for them to change.They never did.I tapped the shoulder of an older woman sitting in the row ahead of me. She looked back, an annoyed expression across her face. Yes? she asked.Do you know how long until we land? I asked.She narrowed her eyes. That flight attendant said it would be about another hour.I shook my head in confusion. That flight attendant? We talked almost two hours ago! We shouldve landed already.She stared at me as if I was crazy. I was going to continue trying to convince her, but I felt a hand on my shoulder. I spun to see a male flight attendant grinning down at me, tears pinging off his cheeks onto my shoulder.Sir, Im going to ask you to calm down, or Ill be calling the Captain.I told him that wouldnt be necessary and sat back. He removed his hand and stepped away.The flight attendants continued to stop by every few hours offering meals. My stopwatch continued to tick up and is now telling me that Ive been on this plane for more than thirty hours.Ive explored all of coach and tried talking to some of the other passengers, but theyve all told me that theyre expecting to land in an hour or so.Around three hours ago I tried getting into first class. I made it past the curtain but was escorted back by two grinning flight attendants. Their grip on my arms were like iron.Sir, the seatbelt sign is on, one said. Please remain in your seat with your buckle fastened. Well be landing in about an hour.Id just about given up hope when a woman came down the aisle dressed in a business suit. She didnt look at me or slow down, but she dropped a piece of paper onto my tray as she made her way to the bathrooms at the back of the plane.I shot a look around before unrolling it.It said, Are you stuck too?I pulled out a pen and wrote Yes. Its been thirty hours.I folded the scrap of paper up and set it on the tray closest to the aisle. She left the bathroom and picked it up as she passed.Its been twenty minutes since then. I dont know why, but I dont think the flight attendants would like it if they knew we were talking. It doesnt matter. I have to do something. If have 3 shirts for every 2 pair of pants I have what is my ratio of shirts to pants.? If I have 39 shirts how many pairs of pants do I own? What is another way of saying entirely different ambitions?new ways of thinkingnew hopes and aspirationsnew cravings and desiresnew beliefs and certainties Which polygon has one set of parallel sides and at least one right angle? On a coordinate plane, a polygon has 1 set of parallel sides. On a coordinate plane, a polygon has 1 set of parallel sides. On a coordinate plane, a polygon has 1 set of parallel sides and 1 right angle. On a coordinate plane, a polygon has no parallel sides. How do your preferences for personal space change at Thankgivings gatherings? Am I stupid if I get most questions in the AP Chemistry videos wrong? i need help it's 10th grade (sophomore) geometry Es el estudio descripcin y clasificacin de documentos con un objeto de producir la recopilacin de las fuentes documentales de un trabajo intelectual o un catlogo de obra sobre un tema especfico este concepto responde A biografa B bibliografa C descripcion D concepto How to solve 9(-4k+8b) b=-9 k=4 How did Thomas Paine contribute to the American Revolution? * What were two things Muslims liked to do for recreation?