A scientist did a test to compare two substances: substance Q and substance R. At room temperature, both substances are liquid. When the scientist transferred the same amount of energy out of both substances, only one substance changed phase while the other did not. Which substance changed phase, and how did it change?

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Answer 1

Based on the information given, it is not possible to determine which substance changed phase or how it changed.

How do you know the one that changed phase?

We have to know that the change of phase is one of the processess that would occur when we increase the temperature of the system and this can be done by the addition of heat to the material.

We do not have the heating curve of the substances hence it would be difficult to know which of the substances that is going to change phase. This information is easily read off from the heating curve.

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Related Questions

can someone please help me solve these!! i haven’t done these in a while and i’ve completely forgot how to do everything

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Based on the medical information, it can be inferred that the dose for the patient weighing 120 pounds would be 2.1 mL. Additionally, the patient will receive 8 mL of Furosemide every 24 hours.

How to find the amount of medication dose?

To find the amount of the drug dose we must follow the following procedure:

1. We must identify the relevant information to solve the problem:

Prescription: Digoxin 10 mcg/kg per dayPatient weights: 120 lbs

2. We must calculate how many kilos are equal to 120 pounds.

1 pounds = 0.45 kilograms120 pounds = 54.43 kilos

3. We must calculate the dose that the nurse should give the patient.

If you weigh 54.43 and it is 10 mcg/kg per day, then we must multiply these values:

54.43 * 10 = 544.3

4. We must calculate how many mL this dose is equivalent to.

So we know that 500 mcg /2 mL544.3 * 2 / 500 = 2.1 mL.

According to the above, the dose would be 2.1 mL

On the other hand, to calculate how many mL will the patient receive in 24 hours we have to make the following procedure:

24 / 6 = 44 * 60 mg = 240 mg240 / 30 = 8 mL

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Doctors often strike your knee gently with a rubber hammer and see if your leg gives a little kick as part of a routine physical. This patellar reflex test is literally looking for a knee jrk response, one that you are not thinking about at all! What do you think the doctor is testing here
what part of the body would this test examine? What would an abnormal result look like, and why is it important to detect abnormal results? How might a patient’s response change as they enter old age, as opposed to when we are tested as children?

Answers

Explanation:

Q1:The doctor is testing the patellar reflex of the knee.

Q2:This test usually examines the knee .

Q3:An abnormal result might be an exaggerated reflex or a poor one these can show neurological damage so it is important that it is treated early on.

Q4:The muscles are weak if the patient is an oldie but as a kid muscles are pretty strong so reflexes will be better.

in what speed and dirrection did it move

Answers

Answer:

did which move?

Explanation:

its incomplete

Tim ate a carbohydrate for his after school snack. Which of the following snack foods is a carbohydrate?
A.
Candy bar
B.
Crackers
C.
Toast
D.
All of the above

Answers

Answer:

the answer is D. all of the above. Beacause all of them contain carbohydrates

hope it helps.

Answer:

C.Toast

Mark brainiest

Explain how cells specialize to form specific tissue and organs. (Hint: The article and lesson describes how tissues and organs are built—use that as your text evidence.)

Answers

Answer:

Answer Below ↓

Explanation:

1. Unspecialized cells are the undifferentiated cells that are not bound to perform particular function. Cellular differentiation is the procedure by which cells become specialized or specific to perform a particular function. Cells specialize to form specific tissue and organs because the DNA or genes are similar for the whole cells. Differentiation happens many number of times during the growth of a living organism. Cells develop to tissue to form complex function through differentiation. Therefore, differentiation is an important process to form tissues and organs.

Doctors often strike your knee gently with a rubber hammer and see if your leg gives a little kick as part of a routine physical. This patellar reflex test is literally looking for a knee jrk response, one that you are not thinking about at all! What do you think the doctor is testing here
what part of the body would this test examine? What would an abnormal result look like, and why is it important to detect abnormal results? How might a patient’s response change as they enter old age, as opposed to when we are tested as children?

Answers

The patellar, or knee-jrk, reflex is what the doctor feels when tapping your knee. Because the doctor is actually tapping on a tendon called the patella tendon, it is also known as a deep tendon reaction.

What is patellar?

In order to extend your knee so that you may run, jump, and kick, the patellar tendon collaborates with the muscles in the front of your thigh.

The majority of patellar tendinitis cases, often known as rider's knee, occur in athletes who participate in sports like basketball and other sports that frequently require hopping.

Patellar tendonitis, sometimes referred to as rider's knee, is a condition marked by inflammation of the tendon.

Numerous conditions necessitate a patellarectomy, such as severe osteoarthritis of the knee, anterior knee discomfort, or a comminuted patellar fracture.

Thus, it important to detect abnormal results.

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Cara has been outside in humid weather for about five minutes. Her body can tell that the temperature has increased. Describe what her body might begin to do in order to maintain homeostasis while Cara is gardening in the heat. How do these changes help Cara’s body adapt?

Answers

Explanation:

Cara's body will start to sweat to maintain homeostasis. This cools off the body and keeps it from overheating in the hot, humid weather.

Cara's body will respond to the heat with sweat to maintain homeostasis. This cools off the body and keeps it from overheating in the hot as this is what humans evolved to do with hot weather, this keeps Cara cool and to prevent any heat injuries like sunburn or heat stroke.

working alongside the pharmacist , one of the duties a medication reconciliation technician would perform is to…?
a ) deal with various drug suppliers .
b ) promote the assigned drugs in the healthcare communities such as physician clinics and pharmacies .
c ) keep needed medications on hand .
d ) ensure that the medication orders align with the medication that's sent home with a patient .

Answers

Answer:D

Explanation:

Imagine you are a member of the HMRU unit in your local area. In the space below, write a 150-word, detailed analysis
of the steps you will take to address an industrial spill at a local manufacturing plant. The team is unaware of the actual
substance that has been spilled. What are your main duties and what equipment will you use to complete your
assignment?

Answers

The Warwick Medical School and University Hospitals Coventry and Warwickshire NHS Trust jointly manage the Human Metabolism Research Unit (HMRU), a specialized research facility.

What is HMRU unit?

The HMRU is based at University Hospital in Coventry and has specialized facilities constructed just for determining body composition and energy expenditure.

The HMRU offers a singular chance to investigate and provide a knowledge of the nature of metabolism and metabolic disorders, enabling research to uncover novel connections between diet, way of life, and population long-term health.

For incidents involving chemicals, biological, radiological, nuclear, and explosive agents, HMRU offers help for response and planning. This includes agent monitoring, detection, evidence gathering, sampling, and identification of hazardous materials/CBRNE materials.

Therefore, The Warwick Medical School and University Hospitals Coventry and Warwickshire NHS Trust jointly manage the Human Metabolism Research Unit (HMRU), a specialized research facility.

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Doctors often strike your knee gently with a rubber hammer and see if your leg gives a little kick as part of a routine physical. This patellar reflex test is literally looking for a knee jrk response, one that you are not thinking about at all! What do you think the doctor is testing here
what part of the body would this test examine? What would an abnormal result look like, and why is it important to detect abnormal results? How might a patient’s response change as they enter old age, as opposed to when we are tested as children?

Answers

The doctor is testing for the neurological function of the individual.

The part of the body that this test would examine is the nervous system of the body.

An abnormal result would have a long response time or no response at all and is it important to detect abnormal results because it will help to know how well the individual's reflex is working in order to help avoid dangerous situations.

A patient’s response will take longer and gradually reduce in strength as they enter old age, as opposed to when we are tested as children.

What is a patellar reflex test?

The patellar reflex test, which assesses the integrity of neurological function, involves striking the patellar tendon beneath the kneecap with a test hammer.

Reflex actions are involuntary actions, hence, the faster the reflex of an individual, the more functional the nervous system of the individual is.

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You need 50 mL of a 10% boric acid solution. The pharmacy carries only85% boric acid.
How much concentrate will you need?

Answers

Explanation:

To determine how much 85% boric acid concentrate you need to make 50 mL of a 10% boric acid solution, you can use the following formula:

concentrate needed (mL) = desired concentration * volume / desired strength

Plugging in the given values, you get:

concentrate needed (mL) = 10% * 50 mL / 85%

Simplifying, you get:

concentrate needed (mL) = 0.12 mL

So, you will need about 0.12 mL of 85% boric acid concentrate to make 50 mL of a 10% boric acid solution.

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