HEALTH HIGH SCHOOL

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:

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:

Answer:A

Explanation:

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

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What are tiny blood vessels that has walls thin enough for carbon dioxide and oxygen to be exchanged?

Answers

capillaries have thin walls that allow the exchanging of material between the blood and the cells.

A person found lying face down on the sidewalk would be lying in what position?a. dorsal
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d. ventral

Answers

the answer is c. because it is dorsal supine 

Answer: prone

100%

Explanation:

Ian wants to develop the muscles in his upper body. Which is the best strategy for him to adopt? Exercise and eat well, and take moderate quantities of steroids and supplements, as advised by a doctor.
Work with a trainer and use researched information to devise the most beneficial diet and training plan.
Load up with carbohydrates and protein, and concentrate his exercise plan on weight lifting rather than aerobic activities.
Avoid steroids and consult a health practitioner to find types of dietary supplements that best increase muscle mass.

Answers

he best strategy for him to adop would be: Work with a trainer and use researched information to devise the most beneficial diet and training plan.By doing this, ian will find out the most effective workout to target a specific body part He wanted to strengthen. The diet plan will gives him enough energy and nutrients to re-build his muscle after the workout.

Answer:

B. Work with a trainer and use researched information to devise the most beneficial diet and training plan.

Explanation:

What is cardiorespiratory endurance?

Answers

The answer about cardiovascular endurance is explained below.

Explanation:

When a body is doing a high intensity activity, the cardiorespiratory system works to provide oxygen to the muscles of the body. This ability of providing oxygen rich blood to the heart, blood vessels and lungs efficiently, is called as the Cardiovascular endurance.

Cardiovascular endurance tells us that how well the body can provide blood during a physical activity like running, cycling, aerobics, etc, for a longer period, more than 90 seconds.

Cardiovascular Endurance has many health related benefits. One of the main benefit of cardiovascular endurance is the longer life. Some other benefits may include:

  • Lower Blood Pressures
  • Regulation of Blood Sugar
  • Reduction of Chronic pains
  • Better Sleep
  • Regulation of Body Weight
  • Strengthening of Immune System, etc

Learn more about Cardiovascular Endurance at:

brainly.com/question/1865249

#LearnWithBrainly
cardiorepiratory insdurance is an aerobic fitness involving performing exercise at moderate level of intensity for an extended period.

Which of these people is most likely to be influenced by peer pressure?A: Diandra, who is very sociable, because people have to conform to peer pressure to be sociable.

B: Gia, who wears only clothes that are in the latest style, even though she doesn't personally like them.

C: Angelo, whose parents are very involved in his life, because he has really made decisions on his own.

Answers

Answer;

B: Gia, who wears only clothes that are in the latest style, even though she doesn't personally like them.

Explanation;

Peer pressure occurs when group of people coerce each other to go along with certain beliefs or behaviors.

Some of the main causes of peer pressure are related to age-appropriate behavior. Adolescents develop a strong desire to fit in with their peers and be accepted by them. This desire makes adolescent peer pressure tough to resist.
The correct answer is B , my reason being is mainly because she is doing something that she doesn't like but because everyone else is doing it.

I really hope that this helps you out a lot.    :) have a nice day.

Why should you not go trick-treating by yourself?

Answers

You can easily get kidnapped when going up to peoples doors or another can run up and take you. think about it, millions of people you can see in the dark running around and your alone! :) hope this helped

Answer:

depends on the safety of your neighborhood, your child's maturity, and your own comfort level. You should never let your child go trick-or-treating all by himself; if you are ready to let him go without an adult, make sure he travels with other children his age.

Explanation:
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