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

From what does emotional regulation allow children to benefit?

a full night of sleep every night
opportunities to play outside
social supports offered by relationships
a healthy breakfast, lunch, and dinner

Answers

Answer:

Social supports offered by relationships.

Explanation:

Answer:

Social supports offered by relationships. :)

Why should you try to avoid ETS, and how can you reduce your exposure to ETS?

Answers

Answer:

Why should you try to avoid ETS, and how can you reduce your exposure to ETS? ETS should be avoided because ETS causes lung cancer. It also causes eye irritation, headaches, ear infection and coughing in people of all ages. It worsens asthma and other respiratory problems.

Explanation:

describe the three types of energy balance in the body and what each one is used for.​

Answers

Answer:

Explanation:

Lactic Acid System

The lactic acid system, also called the anaerobic glycolysis system, produces energy from muscle glycogen -- the storage form of glucose. Glycolysis, or the breakdown of glycogen into glucose, can occur in the presence or absence of oxygen. When inadequate oxygen is available, the series of reactions that transforms glucose into ATP causes lactic acid to be produced -- in efforts to make more ATP. The lactic acid system fuels relatively short periods -- a few minutes -- of high-intensity muscle activity, but the accumulation of lactic acid can cause fatigue and a burning sensation in the muscles.

I WILL MARK THE BRAINLIEST!
In order to win a volleyball match a team must win how many sets?

Answers

Answer:three sets

Explanation:a full game is five sets

they will need to win 3 sets

function of sub-health post​

Answers

The main purpose of health post is to provide basic health services to people who live in rural areas. ... The health post provides simple health services such as preventive, promotive and curative services.
-I Hope this helps ʕ•ᴥ•ʔ

Who showed up to visit David unexpectedly one day? His mom and brothers​

Answers

I'm a little confused as to the meaning of this, but okay?

15 points
1. What are the Five Most Common Causes of Foodborne illness? *

1)Purchasing food from unsafe sources
2)Allowing pests to enter the operation
3)Failing to cook food correctly
4)Failing to rotate food during storage
5)Using contaminated equipment
6)Holding food at incorrect temperatures
7)Practicing poor personal hygiene
8)Failing to store dry food correctly

Answers

Answer:

1,3,5,6,8

Explanation:

Improper hot/cold holding temperatures of potentially hazardous food.

Improper cooking temperatures of food.

Dirty and/or contaminated utensils and equipment.

Poor employee health and hygiene.

Food from unsafe sources.

using a positive message to make a suggestion is what?​

Answers

Explanation:

criticism

How does this level of organization relate to cells? To organ systems?

Answers

Answer:

The heart —belonging to the organ level of organization— is composed of cardiac muscle cells forming the myocardium, and belongs to the cardiovascular system.

Explanation:

The cellular level of organization of the heart is complex, since it is a group of specialized cells that constitute the main organ of the cardiovascular system.

The heart is predominantly made up of the myocardium, formed by muscle cells similar to those of the striated muscle, but with a different distribution. Other cells belonging to the heart are the endothelial cells, which cover its interior, and the fibrous and serous cells that constitute the pericardium.

Structurally, the heart is part of the cardiovascular system, whose function is to carry blood throughout the body. Functionally, this organ is related to all the tissues, organs and systems of the body.

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:

Using the correct terminology you learned in the readings, list the eight major stretches you have chosen to do for your flexibility workout log.

A.
B.
C.
D.
E.
F.
G.
H.

2. Indicate the number of repetitions you will do for each stretch.



3. Indicate how long you will hold each stretch for each repetition.


4. What days of the week do you plan to do your flexibility workout?




i want each question to be right just answer it and thank you

Answers

Side lunge stretch, butterfly stretch, calf stretch, glute bridge, standing quad stretch, chest and shoulder stretch, cobra stretch, and standing hip flexor stretch are 8 stretches for flexibility.

What is the best way to do stretching for flexibility?

Consistency is the key to achieving any goal, therefore we should do stretching and work out regularly and consistently for good results.

The number of repetitions for each stretch should be at least 10, and each stretch should be held for 30 seconds.

Thus, for good and effective results, flexibility works out should be done 5 days a week.

Learn more about stretching, here:

https://brainly.com/question/11608941

#SPJ1

10. ) Match the definition with the correct term.
1.scoring a run
2.sacrifice bunt
3.passed ball, wild pitches and throwing errors
4.sacrifice flies
5.scoring position
6.fielder's choice
7.singles, doubles, triples, or homeruns
8.grand slam
9.walks
10.advancing the runners
11.stealing a base


a.when a catcher, pitcher or fielder makes an error and allows a runner to advance

b.when a batter hits a home run and there are runners on first, second, and third - which will score 4 runs total

c.when a runner touches home plate

d.types of hits in baseball or softball

e.moving the runners from one base to the next

f.when the defense has a choice who to get out. A fielder may choose to get the runner going to third rather than the runner going to first.

g.when a runner tries to advance to the next base while the pitcher is throwing to a batter

h.when a batter gets 4 balls thrown to him or her OR gets hit by a pitch

i.when a batter lays down a bunt to force the defense to throw to first base, allowing another runner on base to advance to the next base into scoring position

j.when a runner is on second or third and could get to home plate if the ball is hit hard or fast enough

k.when a batter hits the ball into the air, a runner that is on base can legally try to go to the next base, but only after the ball has been caught by the fielder

Answers

Answer:

the answee is

k.when a batter hits the ball into the air, a runner that is on base can legally try to go to the next base, but only after the ball has been caught by the fielder

Helping others with their problems shows your family that you care.
Please select the best answer from the choices provided.
-true
or
-false

Answers

True






I hope my answer helped you!

Osteoporosis is evidence that this bone cell has been at work.
a. osteocyte
b. osteoblast
c. osteoclast

Answers

Answer:

c. Osteoclast

Explanation:

If the number of osteoclasts gets lowered inside the bony tissue or they are not adequately developed, the bone dysfunctioning called Osteopetrosis develops.

Which of the following diseases is preventable by vaccine?
strep throat
whooping cough
tuberculosis
conjunctivitis

Answers

Answer:

Strep Throat

Explanation:

There is no vaccine to prevent strep throat, however, there are things people can do to protect themselves and others.

Hope this helps!

Answer:

the answer is Tuberculosis

Explanation:

it has a vaccine and our country seem to have done it already three months ago

How do you treat for shock when you suspect neck/spine injuries?

Answers

Answer:

this is what i found

Explanation:

If you suspect someone has a spinal injury:

Get help. Call 911 or emergency medical help.

Keep the person still. Place heavy towels or rolled sheets on both sides of the neck or hold the head and neck to prevent movement.

Avoid moving the head or neck.

Keep helmet on.

Don't roll alone.

Answer:

You get help right away, keep the person still and Place heavy towels or rolled sheets on both sides of the neck or hold the head and neck to prevent movement, make sure you Avoid moving the head or neck, keep helmet on, and lastly Don't roll alone.

Explanation:

hope this helps

Select the correct answer.
According to the report by the Center for Disease Control, which statement is not true about the majority of the nation's youth?
A. They are inactive.
B.They are unfit.
C. They are overweight.
D. They are underweight.

Answers

Answer:

D

Explanation:

most kids are overweight

The answer could also be A

when is the best time to stretch during and exercise routine?

Answers

Answer:

before and after

Explanation:

i would say before and after :)

how should I feel about my dad having a massive heart attack and being rushed off to the hospital?

Answers

Answer:

Have hope

Explanation:

If you're a firm believer in a god, you'll know that everything happens for a reason

How are your relationships with family members similar to your relationships with friends and how are they different?

Answers

I don’t really have a connecting with a lot of them habit I do talk to them

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

In your opinion, how do neurons compare to a string of lights?

Answers

Answer:In biology, the nervous system is a highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body.

Explanation:

The neurons in the nervous system can be compared to a string of lights as these carry signals same as the wire carry current or charged particles.

What is the neuron?

The nervous system can be referred to as a highly complex part of an animal that usually coordinates with the actions and the sensory information by transmitting various signals to and from the different parts of its body.

The messages which are being carried by these neurons are called as the nerve impulses. Nerve impulses can travel very quickly through these neurons because they are electrical impulses. It is similar to the flipping on a light switch when we enter a room. When we flip the switch, the electricity flows to the light through wires inside the walls.

Learn more about Neuron here:

https://brainly.com/question/29462317

#SPJ2

What is the primary way in which recycling helps reduce pollution?
A.
It reduces the number of trips a household needs to make to the store by reducing the need to buy new items.
B.
It saves raw materials and conserves natural resources by reducing the need to produce items from new resources.
C.
It saves money that we can invest in the environment because it reduces the number of new items we need.

Answers

Answer:

The main way that recycling helps reduce pollution is saving raw materials and conserves natural resources by reducing the need to produce items from new resources (option B).

Explanation:

Recycling is based on saving used products, such as glass, plastic, aluminum or paper with the purpose of reusing them, reducing the manufacture of new containers.  

This recycling practice contributes to reduce the pollution that implies disposing of these reusable products, in addition to conserving the raw material.

The other options are not valid because:

    A and C. Reducing the number of trips a household needs to make to the store by reducing the need to buy new items or saving money that we can invest in the environment  are not practices related to the main objective of recycling.

B, it’s saves raw materials and conserves natural resources by reducing the need to produce i teams from new resources

Which of the following is NOT a potential side effect of stimulants?
Depressed heart rate
Anxiety
Loss of appetite
Seizure

Answers

The answer is : depressed heart rate

Answer:

The answer is: Depressed heart rate

Stimulants are drugs that act on the body's central nervous system (CNS) in order to elevate mood, increase alertness, and generate a feeling of well-being. Moreover, stimulants also decrease appetite and increase physical activity.

Stimulants can be categorized into 1-legal (e.g., guarana, taurine, and L-carnitine, coffee and nicotine) and 2-illegal (e.g., methamphetamine, crystal meth, cocaine) stimulants. Both types of stimulants may lead to addiction. The abuse of these substances (stimulants) may cause different health problems such as anxiety, depression, cardiovascular diseases, hypertension, insomnia,  aggressiveness, etc. On the other hand, there are prescribed stimulants such as, for example, Ritalin and Adderall, which are used for treating Attention-Deficit/Hyperactivity Disorders (ADHDs). Moreover,  they are also prescribed to promote weight loss or treat depression.

Stimulants drugs can increase the activity of dopamine and norepinephrine neurotransmitters in the brain, increasing alertness, attention, and energy. Stimulants drugs are also known to increase blood pressure. Conversely, depressant drugs (e.g., alcohol) act to decrease the activity of the brain.  

In resume, stimulants function to increase heart rate and blood pressure, leading to negative health effects

Learn more in:

https://brainly.com/question/16453584

Never make bare hand ______ with the eating or drinking surface of plates / utensils. (7 letters)

Answers

Answer: Contact

Explanation:

I did it myself

What is the relationship between family behavior and Cardiovascular health?

Answers

Answer:

Explanation:A study that followed children over a ten year period showed that positive relationships among children and their relatives led to more positive, healthy behaviors in life. Their physical health, taking care of themselves and making healthy choices, was connected with their family experiences as young children.

Reaction time is the lapse of time between muscular movement and external stimuli.



Please select the best answer from the choices provided.


T

F

Answers

T

Hope this helps! (:

Answer:

true

Explanation:

i took the test

ody Mass Index charts to measure body fat are recommended for boys and girls beginning at
age 6.
birth.
age 2.
puberty.

Answers

Answer:

I think birth

Explanation:

what is one advantage of telemedicine

Answers

Answer:

Many potential benefits of telemedicine can be envisaged, including: improved access to information; provision of care not previously deliverable; improved access to services and increasing care delivery; improved professional education; quality control of screening programmes; and reduced health-care costs.

What part of the body contacts the ball on an Overhand Serve?

Foot/Pie

Top of the head

Flat surface of the hand

Knuckles

Which one?

Answers

Answer:

Flat surface of the

The flat surface of the hand

Other Questions
__________ have the lowest ionization energies of the groups listedPLZ HELP I'LL AWARD BRAINLIEST Help me please! If you can explain it will help me a lot, if not then its okay. What do you find most challenging (difficult)about virtual school Graph the linear function f(x)=36x Why was Britain different than the rest of Europe when it came to scientific inventions? Free pints get it lolololo 1. Determine the electron-domain geometry and molecular geometry for each of the following.a. SBr2b. PI4+c. IBr22. The following three compounds all have the same general formula, XF4. Compare the electron-domain geometries of these three compounds and explain what characteristic(s) of the central atom causes differences in geometry.a. SiF4:b. SeF4:c. XeF4: Find a counterexample for the given conjecture.The difference of two odd numbers is always an odd number. Humans often invade spaces that were once isolated, such as beaches, affecting how animals produce offspring. Humans are overtaking the natural habitat of sea turtles, reducing the space where they deposit their eggs. Females will only deposit eggs on the land where they were hatched, and if that is taken from them they will never lay eggs. Which is NOT a step humans can take in helping sea turtles? A) Respect the areas that have been roped off for turtle eggs B) When turtle eggs are found, move them to a safe place C) When boating, try to avoid places where turtles swim and eat D) If found, do not disturb eggs or sea turtles that are laying eggs Contribution Margin, Break-Even Sales, Cost-Volume-Profit Chart, Margin of Safety, and Operating LeverageYoungsville Industries Inc. expects to maintain the same inventories at the end of 20Y5 as at the beginning of the year. The total of all production costs for the year is therefore assumed to be equal to the cost of goods sold. With this in mind, the various department heads were asked to submit estimates of the costs for their departments during the year. A summary report of these estimates is as followsEstimated Fixed CostEstimated Variable Cost (per unit sold)Production Costs:Direct Materials$48Direct Labor$38Factory Overhead$150,000$25Selling Expenses:Sales salaries and commissions$125,000$10Advertising$50,000Travel$15,000Miscellaneous selling expense$10,000$2Administrative Expenses:Office and officers' salaries$140,000Supplies$10,000$5Miscellaneous administrative expense$10,000$2Total$510,000$130It is expected that 22,175 units will be sold at a price of $170 a unit. Maximum sales within the relevant range are 27,500 units. The Farmers Market sells apples by the bushel, and each bushel of apples weighs 42 lbs. A bushel of large apples contains 84 apples. If a bushel of small apples contains twice as many apples as a bushel of large apples, how many small apples are in 1 lb. of small apples? Its says show work he is a boy convert into interrogative Slove the equation for x, and enter your answer below.7x - 12x - 5 = -45 + 15How do I solve this please provide an explanation Triangle ABC has vertices A (1,1) B (7,1) C (4,9) (A)Find the perimeter of triangle ABC. (B) Find the area of triangle ABC Egg 4. PART B: Which of the following phrases from the poem best supports the answer to Part A?A "In this kingdom" (Line 1)B. there is no tide." (Line 8)C. "galaxy of the barn," (Line 12)"safe but for" (Line 13) Tim Kylie is one of the world's top chefs. He is best known for his signature dish, triple-dipped chip steak. This masterpiece contains over a pound of beef braised in duck fat. Another of Chef Kylie's more celebrated dishes is the Hamslaughter Supreme. This dish features ham stuffed sausage links presented in a basket made of braided bacon. While carnivores around the world roar for Chef Kylie's creations, it is unlikely that Chef Kylie will dine with them. As a longtime vegan, Chef Kylie would never dream of devouring one of his own dishes. What type of irony is this Why is it important to pick a narrator carefully when planning yo write a narrative? A. The narrator tells the story, but it is the reader who controls how eventos are imagines. B. The narrator's point of view determines the sequence of events. C. The narrator must know what all characters think at all times. D. The narrative will change depending on the narrator's tone and point of view. Help me fast I will give brainliest to the first one who does it. Alexa is using 6 pounds of apples to make pies.How many ounces of apples is Alexa using for the pies?(1 pound = 16 ounces) Help please! I need to know the domain and range of this graph Helpppo Ill name you the brainliest