What is the melting point of a substance

Answers

Answer 1

depending on what it is for water it is 32°F

steel is 2500°F

aluminum 1,221°F

zinc is 787.2°F

sorry i cant put all the melting points

unless u mean  

Melting point, temperature at which the solid and liquid forms of a pure substance can exist in equilibrium. As heat is applied to a solid, its temperature will increase until the melting point is reached. More heat then will convert the solid into a liquid with no temperature change.


Related Questions

describe the main difference between a bright field, compound light microscope and a dissecting microscope​

Answers

Answer:

Please find the main difference in details between these two microscopes below

Explanation:

Compound microscopes and dissecting microscopes are two types of light microscopes. This means that both types of microscope uses light as a source of view. However, they are used for different purposes despite this similarity.

- The compound microscope is used to view the internal features of a small specimen by looking through it. This is due to the high magnifying power of its objective lenses (40x - 1000x).

- On the other hand, dissecting microscopes are used only to view the surface of a large specimen owing to its low magnifying power. It can be used to view a three dimensional object.

Thymine, adenine, guanine, and cytosine are classified as nitrogen bases.

- True
- False

Answers

Answer:

TRUE

Explanation:

TRUE

IM IN BIOLOGY AND HAVE DOING THIS FOR THE PAST 2 WEEKS!

TRUST ME ITS TRUE.

From the provided choices, which color of light does the pigment chlorophyll absorb the most?

A) green
B) Orange
C) blue
D) yellow

Answers

Answer: C) Blue

Chlorophyll a: This is the most abundant pigment in plants. Chlorophyll a absorbs light with wavelengths of 430nm(blue) and 662nm(red). It reflects green light strongly so it appears green to us.

so therefore, it’s blue

All the rocks shown below were formed as high amounts of pressure caused other types of rock to change form. Which type of rock is shown in the image?​

Answers

Answer:

metamorphic:)

Explanation:

hope this helps let me know if it’s wrong


HELP ASAP!!


What factor most influences whether a resource is classified as renewable or
nonrenewable?
A. The consumption rate of the resource
B. The availability of the resource
C. The length of time the resource takes to form
D. Whether the resource is biotic or abiotic

Answers

i believe it is option C,,, but i’m not 100% sure :) good luck !!!

Answer:

C

Explanation:

goodluck yall

what do you mean by blood circulation​

Answers

The circulation of blood refers to its continual flow from the heart, through branching arteries, to reach and traverse the microscopic vessels in all parts of the body, reconverging in the veins and returning to the heart, to flow thence through the lungs and back to the heart to start the circuit.

ther is and in book

Two barometric pressure readings taken 12 hours apart in four North Carolina cities are shown in the table. City Air Pressure 1 Air Pressure 2 Jacksonville 1,095 millibars 1,070 millibars Asheville 946 millibars 1,090 millibars Raleigh 1,100 millibars 1,032 millibars Charlotte 1,068 millibars 923 millibars Which city is most likely having severe weather?

help pls

Answers

Millibars are a form of atmospheric pressure.

Hurricanes or severe storms usually have very low atmospheric pressure. So your answer would be 923 HPA (Hecto pascals) or as we call it millibars. 923 Millibars is the average atmospheric pressure for a cat 4 hurricane. So charlotte with 923 is your final answer!

The production of lactic acid or ethyl alcohol occurs during which process?

Answers

Answer:

Alcoholic fermentation

Alcoholic fermentation takes place after the yeast glycolysis biochemical mechanism by which hexoses are converted to pyruvic acid and subsequently into ethyl alcohol and CO2.

Explanation:

Please help QUICKKK! I'm timed!!
It’s question 1 ASAP PLS

Answers

I believe the answer is D, because homologous chromosomes refers to a set of chromosomes, one being maternal (coming from the mom) and one paternal (coming for the dad), that pair up together during fertilization.

A man who has cystic fibrosis married a healthy women. They produce 2 children who both have cystic fiber. What are the genotypes of the man and women? (use symbols to represent the alleles and which parent is which)

Answers

Answer:

The correct answer would be -

Father - both alleles are recessive for the gene - cc

Mother - carrier with the heterozygous condition - Cc

Explanation:

Cystic fibrosis is a recessive genetic disease that means it exhibits only if both copies of the gene mutated, If there is only one copy of the gene is mutated the person will be healthy however, he or she will be a carrier of the mutated gene.

Given: Father has cystic fibrosis which means he has two copies of the mutated gene - cc (c - recessive)

Female - she is healthy now there is two conditions possible

1. if the mother is healthy -  CC (normal allele)

  C     C

c Cc  Cc

c  Cc  Cc

All offspring are in the heterozygous condition that means they are healthy carriers which is not given in the question so women must be a carrier

2. Carrier mother -  Cc

   C     c

c    Cc  cc

c   Cc   cc

Here 50% chances of having children with CF so it is possible as two offsprings have CF according to question

Thus, Father - both alleles are recessive for the gene - cc

Mother - carrier with the heterozygous condition - Cc

one of the earliest events that distinguish meiosis from mitosis occurs in prophase 1 and involves

Answers

Answer:

This question lacks options, options are:  

A. Pairing of homologous chromosomes

B. Movement of chromosomes towards the metaphase plate

C. Condensation of chromosomes

D. Loss of the nuclear membrane

The correct answer is A. Pairing of homologous chromosomes

Explanation:

Mitosis and meiosis are two different forms of cell division in eukaryotic cells, those that have a nucleus.In meiosis in Prophase I: homologous chromosomes pair up and exchange genetic material by crossing over. In mitosis in Prophase I: genetic material begins to condense and form long, thin strands. The mitotic spindle is formed.During the cell cycle, the eukaryotic cell undergoes a series of changes that lead to the formation of new cells. Depending on the type of cell, it can divide by mitosis or meiosis.

The of the cell directs cell activity and acts like the control center

Answers

the nucleus of the cell

Nematodes belong to a category of animals called "Ecdysozoa;" which of the following best describes why?

a)Nematodes are worms.

b)Nematodes molt their exoskeleton.

c)Nematodes can be parasites.

d)Nematodes lack a head.

Answers

Answer:

a

Explanation:

it is a because nematodes belong to a category of animals

THIS _________________ HAPPENS AUTOMATICALLY WITH A CELL IF ITS __________________ IS PERMEABLE TO THE ________________ AND IF THERE IS A DIFFERENCE IN _______________________ OF THE MOLECULES ON EITHER ___________ OF THE MEMBRANE. THIS IS __________________ ____________________.

Answers

Answer:

movement; cell membrane; molecules; concentration; side

THIS IS know as diffusion

Explanation:

Diffusion is the movement of molecules from the side of the membrane with a higher concentration to the side of the membrane with a lower concentration. Facilitated diffusion is a process that occurs if the cell membrane is permeable to these molecules and if there exists a difference in the concentrations on the two sides of the membrane. This mechanism is also known as passive transport because no energy is needed for the movement of molecules across the membrane.

PLEASE HELP ME WITH QUESTION 23 IT IS DUE SOON. PLEASE!!
I WILL GIVE U 10 POINTS

Answers

Answer:

A.

Explanation:

When it is mRNA adenine pairs with uracil instead of thymine.

Your skin cells and muscle cells have different characteristics. Finish this statement: The DNA in your skin cells and muscle cells is

a
the same
b
different

Answers

Answer:

I think different.......

Which of theses is NOT a plant organ?
stem
root
vacuole
leaf
flower

Answers

Flower because the others are a organ which make the plant live but the flower is more of a decorative thing to make the plant stand out

spikes in the shoes of athlete (a) prevents skidding
(b) prevent slipping
(c) increase friction
(d) all of these​

Answers

Answer:

Spikes are provided in the shoes of athletes so as to increase the friction and prevents from falling down.

so option C. is the answer

Answer:

spikes in the shoes of athlete increase friction.

Hope it helps :)

When you surprised that your mom is on the Hospital and she have a lung cancer stage4 what should you do?​

Answers

Answer:

what you can

Explanation:

my grandma just got diognosed with two different types of lung cancer, stage 3. Not much you can do but be there for her. One thing that we did for her was make her a cancer/chemo basket after doing research. Apparently it tastes gross so you give them hard candy to suck on and there are certain things like ginger flavored ones or ginger smelling sticks that make you not be nasaus and hats in case she loses her hair (which they said she wouldn't) and a blanket with all of the family on it so she never has to be alone and stuff like that. They're aloud to take one bag to chemo so I would really reccommend doing it. She loved it anyway.

Hope everything turns out ok *sad smile*

In the 1970s, public opinion favored cleaning up the environment. Since the 1980s, some members of Congress and industry leaders have fought against environmental laws that regulate the amount of pollution that can be added to the environment. Are they working in the best interests of the public or of corporations?

Answers

Answer:

They are working in the best interests of corporations

Explanation:

Corporations and industries are responsible for a large percentage of  environmental pollution being witnessed in several regions of the world. The pollutions have negative consequences for the environment and the organisms living in it, including humans. Hence, formulating laws to regulate the amount of pollution that can be added to the environment is in the best interests of the public. Any person that fights against these laws is likely working in the interests of industries and corporations and not the public in its entirety.

Cells start to divide when they receive a signal. They continue to divide until they get another signal to stop. A cell with damaged DNA may not respond to the stop signal. The cell can become cancerous and divide uncontrollably. The cancerous cell and all its daughter cells can form a tumor. During which step of the cell cycle does a cell get a signal to begin cell division?

Answers

Answer:

Prophase.

Explanation:

Prophase is the stage of cell cycle which receive the signal to start cell division. Due to this signal, the nucleus dissolves inside the cell and the chromosomes begin movement to the middle line of the cell where these chromosomes condenses and then division of the cell occurs in later steps of mitosis cell division. So we can conclude that prophase step started when it got signal.

plz help will give brainliest

Answers

Answer:

Explanation:

Tropical Zone: humid, hot, wet, rainforests

Temperate Zone: forests and grasslands, four seasons

Cold Zone: windy and snowy, mountains and highlands

Slowing signals between neurons is a function of __________. A. excitatory receptors B. excitatory neurotransmitters C. inhibitory receptors D. inhibitory neurotransmitters

Answers

Answer:

D  

inhibitory neurotransmitters

Explanation:

Slowing signals between neurons is a function of inhibitory neurotransmitters. Neurotransmitters are the chemical messengers. Thus, the correct option is D.

What are inhibitory transmitters?

Neurotransmitters are the chemical messengers in the body. These are released by the axon terminals of neuron and transmit the nerve impulse (message) to the neighboring cell (a muscle cell or a nerve cell).

There are primarily two types of neurotransmitters in the body, which are:

1. Excitatory neurotransmitter and 2. Inhibitory neurotransmitter

Inhibitory neurotransmitter have inhibitory effect on the neuron, they reduce the chances that a neuron will fire an action potential. They are responsible for slowing signals between neurons. Example: GABA (gamma amino butyric acid) is a common inhibitory neurotransmitter.

Therefore, the correct option is D.

Learn more about Neurons here:

https://brainly.com/question/24217914

#SPJ5

Choose the term that best matches the description given. Treatments that destroy or decrease the growth of a microbe infection in a patient ______ a. Disinfects b. Antiseptics c. Sterilization d. Antimicrobials e. Quarantine

Answers

Answer: The correct option is D (Antimicrobials).

Explanation:

Antimicrobial treatment is defined as therapies that are given to patients to either inhibit or kill the growth of microorganisms IN their body cells. The antimicrobial treatment can be grouped into two based on their mechanism of action. These includes:

--> Microbiocidal therapy: This type of treatment when given, kills the microorganisms in the cells of the patient.

--> Microbiostatic therapy: This type of treatment aims at inhibiting the growth of microorganisms when administered to a patient.

The antimicrobial drugs achieve their role usually through their different modes of action which includes:

--> cell wall inhibition

--> inhibition of cell membrane function

--> protein and nucleic acid synthesis inhibition.

Disinfects, antiseptic and sterilisation are all different ways of eliminating microorganisms but not used as invitro (within) treatment for patients. Therefore the term that best matches the description given is antimicrobials.

How are kettle lakes formed?
A. glacier movement scraping depressions in ground
B. from ice blocks calving off melting glaciers and digging holes
C.from weight of tons of glacier ice pressing down on ground
D.from sink holes forming from underground streams

Answers

Answer:

B

Explanation:

The glacier melts off and buries into the ground

Answer:

a

Explanation:

I took the test.

;)

How are precipitation and temperature different between the polar and tropical climate zones?

Answers

Answer:

The temperature is colder in the polar climate zones. Also, there is less precipitation in polar climate zones. Meanwhile,the temperature is warmer in the tropical climate zones. Also, there is more precipitation in tropical climate zones.

Explanation:

The earth is extremely diverse in its ecosystem. Different regions are called climate biomes to understand patterns of meteorology, biology, and natural phenomena.

The biggest difference between tropical and polar climates is the difference in temperature. The tropical climate is close to the equator and has more sun all year round than anywhere else on the planet, but the polar climate is the furthest from the equator and has the least sunlight and heat of any part of the world. This makes  winters harsher and summers shorter in polar climates, but hotter virtually every day in tropical climates. Both climates are reminiscent of precipitation (such as tropical rains and polar snow), but both can  be quite dry. Antarctica is said to be the largest desert in the world because there is little snow falling towards the center of the continent.

What are examples of tropical desserts?

Tropical deserts, such as the Namib Desert in Africa, are so hot and dry that it is difficult  to survive.

Thus it concludes that precipitation and temperature are different between the polar and tropical climate zones.

to know more about the polar zone refer to the link?

https://brainly.com/question/16218

Describe a specific instance where an enzyme assists the human body. What role does the
enzyme play in the chemical reaction

Answers

One specific instance is in rna transcription where the enzyme RNA polymerase helps create a complementary mRNA strand. In general enzymes speed up chemical reactions but lowering the activation energy

How many red blood cells could you line up across the grain of sand

Answers

Answer:

1000

Explanation:

Using the graph of data from this experiment, at which point was the light source most likely removed?
Ο Α
OB
ОС
OD

Answers

Answer:

its B my dude sjdjdjdjdhdhd

Answer: The Correct Andwer Is C

Explanation:

I took The Test And Its The Right Answer

PLEASE VOTE BRAINLIEST

Electricity, Force, Energy, Motion, and Light are concepts investigated in the study of ____.

Answers

Answer: physics

Explanation:

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Which of the following is the correct answer after multiplying both sides of the inequality -x > -3 by -1?x 3x > -3x < -3 Which of the following mountain ranges is located to the West of Afghanistan?a) Uralb) Caucasusc) Kunlund) Altay Question 51 ptsOur company gave their bonus checks to charity.The group of musicians played all of its instruments during the concert.The pod of whales surrounded their prey before attacking.The band set up all of their instruments before the concert.Which sentence is grammatically correct? Satire is best defined as . 6. Vinegar is a weak acid. The most likely pH for a sample of vinegar is a. 1.5. b. 5.5. C 8.5. Most research generates only quantitative data.true or false please hurry its due soon Which feminist themes do these two passages have in common? Check all of the boxes that apply.Women will always suffer from injustice in male-dominated societies.Women typically feel pressured to conform to societal roles.Female artists often struggle in male-dominated societies.To feel fulfilled, women need to feel that they are determining their own fate. patients are required to lay still for several hours after therapeutic angiogramtrue or false Is Artemis Fowl a Genius???A) YesB) noC) Genius doesn't even start to cover meD) I prefer mastermindE) Is the Earth flat?F) no, Artemis Fowl is Artemis Fowl G) All relative. All relative.H) Only if you consider many successful schemes geniusbrainlist if I like your answer! :p please look at photo and answer which one Which pair of statements best describes an essential amino acid?OItis an amino acid that contains peptide bonds. An example is proline.O Itis an amino acid that contains nitrogen. An example is aspartic acid. Itis an amino acid that cannot be made by the body. It must be obtained from eating certain foods.O It is an amino acid that can be produgna by the body. Vitamin supplements maintain healthy levels. What is the slope of a line perpendicular to the line whose equation is2x + 4y=-64. Fully reduce your answer. find the value of x and y In 1950, in developed countries, which age category had the greatest number of females ? The height of a triangle is 7 cm and the height of a similar triangle is 21 cm. How much larger is thearea of the larger triangle? Tollowing:a)3x + 4 = 9.57 + 2x =b)= 5 i will give brainlest. Read the passage.Space Junk!Imagine small pieces of debris hurtling through space at up to 22,300 miles per hourfaster than a speeding bullet. Next, envision those pieces of debris colliding with each other, explosively creating even more smashed bits, as they continue zooming through space. Now, try to imagine a cloud of this debris encircling our planet.You have just created a picture of space junk.Space junk is a term used to describe the different bits and pieces of debris that orbit earth and other planets at mind-boggling speeds.What is this junk, and how did it end up in outer space?This junk is actually debris from objects sent into space. It includes everything from parts of space shuttles to satellites. Pieces from rocket launchers, bits of metal fallen off of satellites, nuts and bolts, and even chips of paint are all considered space junk. The Space Surveillance Network, a group that keeps track of the debris, has seen garbage bags, lens caps, and even a spatula!Currently, there are around 900,000 pieces of debris between 1 centimeter and 10 centimeters in length orbiting in our space system, and this number is growing. The pieces vary in size from softball-sized to those the size of marbles, or even smaller. Additionally, there are millions of debris pieces too small to measure.But isnt space HUGE? Isnt there enough room for these little bits of junk to pass each other?Although space is extremely vast, most of the junk that is worrisome is orbiting earth. It is estimated that there are about 22,300 bits of trash the size of golf balls, in addition to half a million smaller pieces whizzing around earth in the low earth orbit. This means that the junk is within 1,250 miles of earths surface. Sharing this space are active satellites, so there is growing concern about how to keep the satellites from being hit by the debris. There have been a few incidents where this has already happened. For example, in 1996, some debris from a French rocket damaged a French satellite. Surprisingly, the rocket had been launched ten years previously! In 2009, a non-operational Russian satellite smashed into an American satellite. This collision added another 2,000 pieces of junk to the growing pile of space debris.Scientists have labored for years to try to protect both active satellites and the International Space Station (ISS), a space laboratory run by astronauts from different nations. To protect the ISS, scientists have developed the capability to maneuver the station out of harms way. There are also emergency plans in place to protect the astronauts working at the ISS. These plans would isolate the crew to another part of the station to keep them safe in the event of a collision.Still, these measures do not solve the problem of what to do about space junk.In our modern world, we have become more and more dependent on satellites to help us with many things. Among these are communication systems, weather predictions, and navigation. The more we rely on advanced technology, the more likely it is that we will send additional satellites into space. It is not realistic to assume that the number of items launched into space will decrease.Scientists are working on solutions to deal with the problem. For example, Japan has designed a device that looks like a giant rope with a 444-pound weight attached to one end. The weight could swing around and basically knock debris out of orbit. Then it would burn up in earths atmosphere. Other ideas for debris removal have included harpoons, giant magnets, and nets that would capture the debris. Some solutions propose an end-of-life plan for future launches, in which the debris would be sent farther into space or destroyed.Because humans interest in exploring space continues to grow, there is little chance that the number of objects in space will decrease. However, as people become more aware of the problem of space junk, the same energy dedicated to exploring space must be directed toward creative ways of cleaning it up.Question 1Part AAccording to "Space Junk!," what will most likely happen to the amount of junk in space?The amount will fluctuate. The amount will grow. It will stay the same.It will decrease over time.Question 2Part BWhich evidence from the text best supports the answer to Part A?"Still, these measures do not solve the problem of what to do about space junk. ""The more we rely on advanced technology, the more likely it is that we will send additional satellites into space.""In our modern world, we have become more and more dependent on satellites to help us with many things.""The weight could swing around and basically knock debris out of orbit." What animal, introduced by the Romans, greatly changed trade in Africa? Developmental norms are used as a benchmark to determine where one should be developmentally. Please select the best answer from the choices provided T F A local hamburger shop sold a combined total of 610 hamburgers and cheeseburgers on Wednesday. There were 60 more cheeseburgers sold than hamburgers. How many hamburgers were sold on Wednesday?