A student is given two mineral samples that appear very similar. They both are opaque, white, and shiny. He knows that they are either calcite or quartz. To determine the identity of each mineral, the student puts a couple of drops of hydrochloric acid (HCl) on each sample. When calcite reacts with hydrochloric acid, carbon dioxide gas is produced. When HCl is placed on quartz, no changes are observed. Based on the information above, what evidence indicates that a chemical reaction occurs when HCl is placed on calcite?

Answers

Answer 1

Answer:

Carbon dioxide is a new product formed from the reaction between calcite and HCl

Explanation:

Calcite is a mineral with the chemical formula CaCO₃. Hydrochloric acid reacts with calcite to liberate carbon dioxide and form calcium chloride and water. The equation of the reaction is given below:

CaCO₃ + HCl ----> CaCl₂ + H₂O + CO₂

In a chemical reaction or change, new products are formed which are different from the original elements or compounds reacting.

Since the carbon dioxide gas, calcium chloride and water are entirely new products formed from calcite and hydrochloric acid, the reaction between calcite and HCl is a chemical reaction.

Answer 2

Answer:A

Explanation:

Carbon dioxide is a new substance created from the calcite and hydrochloric acid


Related Questions

Horatio was born with malfunctioning kidneys. Which homeostatic disorder is he at most risk for?
type 2 diabetes
narcolepsy
metabolic acidosis
hyperthermia

Answers

Melabolic acidosis is the answer

Horatio is may be suffering from Metabolic acidosis.

What is metabolic acidosis?Metabolic acidosis is a condition in which the body's fluids contain too much acid.When the body produces too much acid, metabolic acidosis occurs. It can also happen if the kidneys are unable to excrete enough acid from the body.Causes of Metabolic acidosis:-

Diabetic acidosis (also known as diabetic ketoacidosis or DKA) occurs when acidic molecules called ketone bodies accumulate due to uncontrolled diabetes.

The removal of too much sodium bicarbonate from the body, as can happen with severe diarrhoea, causes hyperchloremic acidosis.Kidney disease is a condition that affects the kidneys (uremia, distal renal tubular acidosis or proximal renal tubular acidosis).Lactic acidosis is a condition in which the body produces too much lactate.Aspirin, ethylene glycol (found in antifreeze), or methanol poisoning.Dehydration is a serious problem.

Hence the correct option is C.

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what is the pathway for co2 in our respiratory system?​

Answers

Answer:

alveoli

Explanation:

because carbon dioxide moves from the blood in the capillaries to the air in the alveoli

Carbon dioxide (CO2) is a waste product of cellular metabolism. You get rid of it when you breathe out (exhale). This gas is transported in the opposite direction to oxygen: It passes from the bloodstream – across the lining of the air sacs – into the lungs and out into the open.

Which of the following is an effect of sleep deprivation over time on the immune system?
A. A decreased amount id cytokines, making a person more susceptible to disease and infection B. An increase in stress hormones, causing a person’s risk of heart attack to increase C. An decrease amount of muscle mass, leading to obesity D. An increase in blood sugar levels, leading to a person become obese or developing diabetes

Answers

Answer:

The answer is A.

Explanation:

Hope it helps! <3

The effect of sleep deprivation over time on the immune system is that it decreases amount of cytokines, making a person more susceptible to disease and infection. That is option A.

What are cytokines?

Cytokines are proteins of the immune system that controls the growth and activity of other immune system cells and blood cells.

The level of secretion of cytokines is affected by stress.

Sleep deprivation is a type of stress to the body which causes these immune proteins, cytokines, to decrease making a person more susceptible to disease and infection.

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QUESTION 4
11. Health care records belong to the patient since they are paying for care.
OO
True
False

Answers

The answer should be false

Agriculture is still a significant aspect of the economy of Los Angeles.

Answers

Answer:

True

Explanation:

Los Angeles County still makes a contribution to the Golden State's vast farm productivity. L.A. County farm production ranked thirty-second among fifty-eight California counties in 2013, with crops including alfalfa, carrots, and peaches, along with nursery crops.

true hope this helps :)))

Question in picture solve

Answers

Answer:

Resting heart rate -  60 to 100 beats per minute

Walk backwards and Brisk walk forward - 110 to 120 beats per minute.

Lateral shuffle and Jog - 160 beats per minute

Skip and Jumping rope - 137 and 166 beats per minute

Jumping jacks - 120 to 150 beats per minute

Squat jumps - 150 to 180 beats per minute

Lunges - 165 to 175 beats per minute

Mountain climber - 142 and 144 beats per minute

X-country skiing - 180 to 185 beats per minute

Cool down walk - 133 to 161 heartbeats per minute

1. Just as exercise strengthens other muscles in your body, it helps your heart muscle become more efficient and better able to pump blood throughout your body.

2. X-country skiing - 180 to 185 beats per minute

3. Interval training (HIIT workouts) Shorter bursts of high intensity exercise have been proven to increase your heart rate more than steady, low intensity workouts.

4. Jumping jacks and jogging, because getting your normal heart beating faster than it's resting rate each day trains your body to move oxygen and blood to your muscles more efficiently.

5. Yes, because giving effort in the activities helps you be confidenceand healthy for daily life

There is a small fire at the library in a children’s hospital. What should the hospital staff do first?

Answers

Answer:

evacuate

Explanation:

they should evacuate first

Answer:

Evacote the children

Explanation:

list 3 ways to reduce the risk of injuries from falls in your home

Answers

Answer:

Clean up clutter Install grab handles or bar railsRepair or remove tripping hazards

Explanation:

Warm up is another name for stretching
True or false

Answers

Answer:

false

Explanation:

hope this helps have a good day

what is the substance that is produced in tobacco leaves ?

Answers

Answer:

Cadmium and lead

Explanation:

I looked it up

Answer:

Tobacco contains the highly addictive stimulant alkaloid nicotine as well as harmala alkaloids. Dried tobacco leaves are mainly used for smoking in cigarettes and cigars, as well as pipes and shishas.

Explanation:

I"LL GIVE YOU BRAINLEST!! Write an essay about What can you do personally to stop bullying? What can you and your social group(s) do to stop bullying? How can adults help stop bullying?

Answers

Answer:

Schools are a primary place where bullying can happen.

Learn what bullying is and what it is not. Many behaviors that look like bullying may be just as serious, but may require different response strategies. You can also learn about what to look for as warning signs that some of your students might be involved in bullying and who might be at more risk for being involved. Know about special considerations for specific groups.

Establish a safe school climate. Often the first step to preventing bullying is making sure the students, teachers, and administrators alike are educated about bullying. Tools like the School Bus Drivers Training and Classroom Teacher Training can help. For kids, tools like these webisodes can help them learn about bullying.

Learn how to engage parents and youth in the building a positive school climate. Learning how to talk about bullying with youth is a critical step.

Know about your obligations under your state’s anti-bullying law. Learn also about federal laws that require schools to address harassment based on race, color, national origin, sex, and disabilities. Work to establish rules and policies to help let the entire school community know the expectations around bullying and procedures to report and investigate when something happens.

Assess bullying in your school and understand how your school compares to national rates of bullying.

Respond when bullying happens. Learn how to stop it on the spot, find out what happened, and support all students involved.

Avoid misdirections in bullying prevention and response strategies.

Utilize free Federal and Non-Federal Resources on bullying.

Parents play a key role in preventing and responding to bullying. If you know or suspect that your child is involved in bullying, there are several resources that may help.

Recognize the warning signs that your child is involved in bullying. They could be being bullied, bullying others, or witnessing bullying.  Although these signs could signal other issues, you should talk to your child if they display any sort of behavioral or emotional changes.  Many times kids won’t ask for help, so it is important to know what to look for. If your child is at immediate risk of harming himself or others, get help right away.

Learn what bullying is and what it is not. Understanding what bullying is is the first step in forming a plan to prevent or respond to bullying with your child. Many behaviors that look like bullying may be just as serious, but may require different response strategies. You can also learn about:

The frequency of bullying;

Who is at risk for being bullied and bullying others; and

The effects of bullying

Cyberbullying often requires different strategies than in-person bullying.  Learn how to work with your kids to prevent cyberbullying and how to respond when it occurs.

Utilize tips and tools to talk to your child about bullying. Opening lines of communication before your child is involved in bullying makes it easier for them to tell you when something happens. It is also important to work with a school to help prevent bullying before it starts.

If you know or suspect bullying has occurred, learn how to find out what has happened with your child. Understanding what has happened can also help in communicating with school or community officials about the situation.

If you have determined bullying has occurred, learn how you and school or community officials can work together to support your child, whether they were bullied, bullied others, or witnessed bullying.  Learn also about considerations for specific groups.

If bullying is occurring at school, learn about what your state requires schools to do in your state’s anti-bullying law. Learn also about federal laws that require schools to address harassment based on race, color, national origin, sex, and disabilities and ways to report situations that have not been adequately addressed to the U.S. Departments of Education and Justice.

If you have worked with your child and your school and need additional assistance, find resources to help address the situation.

Explanation:

Answer:

Bullying is not only a topic, but it is an action. An action in which is seen by many everyday within school systems, business offices, or on the streets. It is everywhere and has become part of the everyday environment. More often then not, bullying occurs greatly within local school systems, where it has come to the extent of having individuals remove themselves from the environment over bullying. Bullying can happen in many ways whether it be race, gender, religion, sexual orientation, and the list goes on. It is not something that can be pushed away any longer. Why should children be punished from there education due to another individual? Exactly, there is no reasonable explanation. Many individuals do not understand what it would be like to be on the other end of the stick. Instead of being the bully, you are being the one bullied. Many know that being bullied is not an enjoyment because it has become part of their everyday lives. Much of which is done on the premises of the school building. Gone unknown and unheard. One of the major items that is noticed on what children get picked on is what they wear to school. If it isn’t designer clothes or items that don’t have a name brand plastered across it, they should get judged. Why? It’s not like it’s their fault.

Explanation:

I dont have one

A hospital administrator emailed an agenda to all the staff employees for an upcoming meeting. The agenda listed the
points below.
-Discuss the change in policy for dealing with patient privacy rights.
-Discuss the possible solutions to overcrowding in the waiting rooms.
-Discuss possible fundraising ideas for the purchase of a spectrophotometer.
What part of the meeting is being effectively communicated to staff members?
the timeliness of the meeting
the objectives of the meeting
the meeting minutes
the administrator's negotiation skills

Answers

Answer:

I think its B: the objectives of the meeting

Explanation:

Meeting objectives are being communicated effectively to staff members. So, the correct option is (B).

What is Meeting?

A meeting is defined as when two or more people come together to discuss one or more topics which often in a formal or business setting, but meetings also occur in many other environments. These can be used in the form of group decision making.

Some important points to remember in a meeting which are as follows:

A clear agenda and objectiveA pared-down list of participantsA point person or moderatorA device policyActionable next steps

These provide a valuable forum for a range of different functions that help people share ideas, make decisions, build team relationships and even feel less lonely at work.

Thus, Meeting objectives are being communicated effectively to staff members. So, the correct option is (B).

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this is the PowerPoint check the work I just uploaded and help answer the questions from here plsss​

Answers

Answer:

sorry i am not understand your questions sorry

If you want to make healthy choices, you need to A. learn about your body B. discuss your health with a doctor C. have a medical examination​

Answers

Answer:

I am 99% sure the answer is A-learn about your body

Explanation:

I hope this helps, can i plz have brainliest

Which of the following is an uncontrollable risk factor that may affect physical activity throughout a person's life?
Family history
Lack of exercise
Poor diet
Tobacco use

Answers

lack off exercise, poor diet and tobacco use

explanation

lack of exercise can cause your muscles and bones to start getting old quicker and cause them to stop working as well
poor diet can cause you to not have energy to get up and move around as you should
and tobacco use can damage your heart and liver which can cause you to be at a high risk to have a stroke or heart attack


In the United States, the onset of puberty has been occurring earlier and earlier. Today, about 10 percent of children ages 6 or 7 begin developing signs of puberty, a condition known as precocious puberty.

In the early 1900s, girls typically began menstruating at age 17. Today, girls typically begin around age 12. This trend has been attributed to the growing number of overweight children and a greater exposure to pollutants. Exposure to phthalates, artificial chemicals found in plastics, has also been cited as a cause. These chemicals disrupt the endocrine system by mimicking hormones in the body.

Early puberty can have many negative side effects, including an increased risk of certain types of cancer, such as breast cancer. Children are often emotionally unprepared for the physical changes taking place in their bodies. As a result, behavioral and psychological problems may increase.

According to the text, what are the likely causes of precocious puberty? Check all that apply.

exposure to pollutants
exposure to phthalates
certain types of cancers
unhealthy weight gain
disruptions to the endocrine system
emotional and psychological problems

Answers

Answer:

exposure to pollutants  (Correct)exposure to phthalates  (Correct)

certain types of cancers  (Wrong)

unhealthy weight gain  (Correct)disruptions to the endocrine system  (Correct)

emotional and psychological problem (Wong)

Explanation:

So it's basically:

A

B

D

E

PLEASE ANSWER
What are these 3 types of fat? Compare & contrast them, list everything you know!!!

Saturated


Monounsaturated


Polyunsaturated

Answers

Saturated can mean fat most the time

Have you ever felt like you were worthless?

Answers

Answer:

yes sadly i have but i got my act together and moved on with my freaking life

Yes sometimes, but everyone felt that before

An).
is anything that increases the chances of an unhealthy outcome.
A. risk factor
B. action plan
C. health continuum
D. habit

Answers

Answer:

I think its risk factor

Answer:

A.

Explanation:

Risk factor

Organelle that makes glycoproteins, which help transport proteins out of the cell.
O Golgi Apparatus
Mitochondria
O Nucleus
Ribosomes

Answers

Answer:

The organelle that makes glycoproteins, which help transport proteins out of the cell is the Golgi Apparatus.

The answer is Golgi Apparatus

Which of the following are true about myocardial infarctions? Select all that apply.

can cause cardiac arrest

can cause vomiting or headaches

can cause the heart to beat erratically

can damage the heart

Answers

Answer:

can cause cardiac arrest

can cause the heart to beat erratically

can damage the heart

Explanation:

just got it right on edge2020

Answer:

A,C,D

Explanation:

n
The alarm stage of Hans Selye's general adaptation syndrome is very similar to
A. the flight-or-fight response
B. constructive coping
C. catharsis
D. appraisal

Answers

Answer:

the flight or fight response

Explanation:

got it correct on edg, 100%

The alarm stage of Hans Selye's general adaptation syndrome is very similar to the flight-or-fight response, hence option A is correct.

What is the flight-or-fight response?

The fight or flight response is a physiological response that occurs automatically in response to a stressful or frightful experience.

Threat perception engages the sympathetic nervous system, causing an acute stress reaction that primes the body for either fighting or running away.

Because your blood flow is being changed, you can feel chilled or notice that your hands and feet are damp and cold.

As your body's blood and hormones flow, your face could also seem flushed. The ability to feel sharp pain is impaired.

Therefore,  the flight-or-fight response and alarm stage of Hans Selye's general adaptation syndrome is similar.

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What is the difference between prescription medicines, nonprescription medicines, and illegal substances. What is their abuse?

Answers

Answer:

Prescription drugs are prescribed by a doctor and intended to be used by a specific person that the prescription is for, while over-the-counter drugs are not. The FDA regulates the OTC drugs through monographs. Monographs cover acceptable ingredients, doses, formulations, and labeling.

100% on edge:)

Explanation:

Answer:

Prescription drugs are prescribed by a doctor and intended to be used by a specific person that the prescription is for, while over-the-counter drugs are not. The FDA regulates the OTC drugs through monographs. Monographs cover acceptable ingredients, doses, formulations, and labeling.

Explanation:

The ________ is located between the forebrain and hindbrain.
A. anteriorbrain
B. midbrain
C. posteriorbrain
D. brainstem

Answers

Answer:

B. ( Midbrain)

Explanation:

What is the function of the blood-brain barrier?
preventing blood loss during injury
O regulating blood flow through the brain
O keeping brain blood separate from body blood
O keeping foreign particles out of the brain

Answers

Answer:

The correct answer is -  keeping foreign particles out of the brain

Explanation:

The blood-brain barrier or BBB is the barrier of endothelial cells that is highly selective and semipermeable in nature that allows selective molecules like certain lipids, gas, and water and prevent other solutes and pathogens, toxins, and infectious agents from circulating blood between capillaries and brain. However, including specific gases and nutrients can cross this barrier.

Thus, the correct answer is - keeping foreign particles out of the brain

Answer:

D edge 2021

Explanation:

Why is it important to get a resting respiratory rate as a vital sign rather than a rate while a person is active?

Answers

Answer:

Why is it important to get a resting respiratory rate as a vital sign rather than a rate while a person is active?

Well, because it shows your heart is actually resting.

Answer:

This is an important thing because this resting respiratory rate shows your body is resting, especially your lungs.

Hope this helps!

Memory, problem solving, and multitasking are all functions of the________lobe.
A. temporal
B. occipital
C. frontal
D. parietal

Answers

Answer:

C. frontal

Explanation:

The frontal lobe controls our cognitive skills, like memory, problem solving, multitasking, language, and emotion.

Answer:

C. Frontal

Explanation:

After an emergency surgery, a nurse counts all the supplies and notices that a sponge is missing. The surgeon asks the
nurse if she removed the sponge, and she replies that she thinks the surgeon removed it. Nobody on the team can
account for the missing sponge. What best describes this scenario?
good communication between the team
an undesirable outcome caused by poor teamwork
a negative effect of good teamwork
a positive outcome caused by good teamwork

Answers

Answer:

The setting is the hospital, and it appears that there are nurses trying to remove an important body part.

Answer:

B: An undesired outcome caused by poor teamwork

Explanation:

Which statement is NOT true about emotional stress? A. Emotional stress can be caused by positive events. B. Emotional stress will disappear if you ignore it. C. Emotional stress can be caused by negative events. D. Emotional stress can make an individual physically ill.

Answers

Answer: B emotional stress WILL NOT go away if you ignore it!

Explanation: it will most likely go away for a little while but it WILL come back and probably be worse

Emotional stress will disappear if you ignore it is not true about emotional stress.

What is Emotional stress?

Stress, which is characterized as mental or emotional strain, is a sensation that affects far too many people.

The American Psychological Association (APA) reports that on a scale of 1 to 10, the average stress level for people in the United States in 2015 was 5.1. Both physical and mental symptoms can be brought on by excessive stress.

Diagnosed depression is characterized by a person's chronic and severe low mood, according to the Anxiety and Depression Association of America (ADAA).

Therefore, Emotional stress will disappear if you ignore it is not true about emotional stress.

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SOCCER -
4. ) Soccer can be played on grass or artificial turf and the surface can be any color.

a.) False
b.) True

Answers

false.




because yeah
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What sentence has the grammar error.(1) A gorilla mother holding her baby.(2) The mother would comfort her child and hold him close.(3) That is what first drew me to the gorilla enclosure at the zoo, and it is what kept me coming back.(4) It was also what made me want to learn more about gorillas. CAN SOMEONE SUMMARIZE THIS FOR ME I SUCK AT ENGLISH SORRY Musical memories are often preserved in Alzheimers disease because key brain areas linked to musical memory are relatively in damaged by the disease PLEASE HELP ME ASAP ! Please help me The early American authors of the Articles of Confederation wanted to preserve the states' sovereignty.explain why would this have been advantageous. Elaborate in detail with at least three reasons. Why would this have been a disadvantage. Elaborate in detail with at least three reasons Kasey colloectes 85 out of 120 pokimon cards. Write this as a decimal. PLZPLZPLZPLZHELPHELPHELPASAP!!Rectangle A measures 8 inches by 5 inches. 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The companys tax rate remains constant at 25% of its pre-tax income or earnings before taxes (EBT).4. In Year 2, Cute Camel expects to pay $100,000 and $1,759,500 of preferred and common stock dividends, respectively.Complete the Year 2 income statement data for Cute Camel.Cute Camel Woodcraft CompanyIncome Statement for Year Ending December 31Year 1 Year 2 (forecasted)Net sales $15,000,000 Less: Operating costs, except depreciation and amortization 9,000,000 Less: Depreciation and amortization expenses 600,000 600,000Operating income (or EBIT) $5,400,000 Less: Interest expense 540,000 Pre-tax income (or EBT) 4,860,000 Less: Taxes (25%) 1,215,000 Earnings after taxes $3,645,000 Less: Preferred stock dividends 100,000 Earnings available to common shareholders 3,545,000 Less: Common stock dividends 1,458,000 Contribution to retained earnings $2,087,000 $2,539,250Given the results of the previous income statement calculations, complete the following statements: In Year 2, if Cold Goose has 5,000 shares of preferred stock issued and outstanding, then each preferred share should expect to receive____in annual dividends. If Cold Goose has 400,000 shares of common stock issued and outstanding, then the firms earnings per share (EPS) is expected to change from_____in Year 1 to_____in Year 2. Cold Gooses earnings before interest, taxes, depreciation and amortization (EBITDA) value changed from_____in Year 1 to_____in Year 2. It is_____to say that Cold Gooses net inflows and outflows of cash at the end of Years 1 and 2 are equal to the companys annual contribution to retained earnings, $3,485,500 and $4,284,812, respectively. This is because_____of the items reported in the income statement involve payments and receipts of cash. How many genes make up the human genome?four: adenine, thymine, guanine, and cytosine23 pairs of genes20,00025,000 genes3 billion genes Which excerpt is the best example of a simile? A. "I'm Nobody! Who are you?" B. "Don't tell! They'd advertise" C. "How public like a Frog" D. "How dreary to be - Somebody!" 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In what ways is racism woven into the fabric of American institutions what is digestion? 1. breathing 2.removing waste3.breathing down food for energy4.growing in size PLEASE Use rigid motion to prove that figure ABC is congruent to figure EFG so uh....its like 3 different questions but you can put it like...i.e.: 1:2:3:yea like that but.... please help..i'll give brainliest too..