Compared to many other liquids, water has a high heat of vaporization, which means a relatively large amount of heat must be added to the water before the water molecules are moving fast enough to escape the surface as a gas. Which of the following explains why water has a high heat of vaporization?
A Adding heat to the water causes the molecules to move around, and the motion keeps pushing them back below the waters surface
B As water molecules heat up they tend to form more hydrogen bonds with each other, making it difficult for any of the molecules to vaporize.
C Water molecules have a relatively high molecular weight compared to other molecules, so more energy is needed for the water molecules to vaporize.
D Enough heat must be added to water molecules' hydrogen bonds to break the bonds and provide the molecules enough energy to escape the surface..
Answer:
D
Explanation:
Water has a fairly high specific heat, which means that enough heat must be added to it to break the hydrogen bonds between the molecules, allowing them to move freely from each other and escape the water's surface.
witch of the following is an example of newtons first law
a. using a force tp push a box
b. pulling back and arrow to shoot it forward
c. a table remains motionless in a classroom
d. none of the above
Answer:
c. a table remains motionless in a classroom
Explanation:
What will happen to the other members of the food chain if the grasshoppers are removed?
Answer:
some of the animals that feed on the grasshoppers will die
Explanation:
if they do not have the regular supply of food, they will die of hunger
Can u name one plant whose no part goes waste?
Answer:
mushroom
Explanation:
mushroom
Why do baby bones contain more cartilage than an adult's?
What is produced by translation
any kind of energy is produced by translation
How do you think the reef will react to a lionfish invasion if there was no sea urchins?
The population of reefs reduces drastically if there are no sea urchins since lionfish use them as a source of food. That way, the lionfish began feeding on the reef itself.
how to write a coma with out two independent clauses
Answer:
They can be made into one compound sentence with a semicolon alone between the two independent clauses
Explanation:
you can use a semicolon to separate two ideas (two independent clauses) that are closely related
In your own words wright a paragraph of the process of the circulatory system.4-7 sentences
Answer & Explanation:
The circulatory system, also called the cardiovascular system transports oxygen-rich blood from the heart to the lungs. The heart then circulates oxygenated blood throughout the body via arteries. The veins return oxygen-depleted blood to the heart, restarting the circulation process.
The san marcos salamander, eurycea nana, is a light reddish-brown translucent salamander about 2–5 cm in length. E. Nana is found only in spring lake and a portion of the san marcos river. Which human activity would most likely decrease the ability of the salamanders to survive?.
Human activity would likely decrease the salamanders' survivability is the growth of cities, which has led to greater use of water by people and increased problems of water pollution and sludge buildup.
What leads to the disappearance of the species?Reducing the flow of water from springs is the biggest threat to the survival of Salamandra San Marcos and other animals and plants dependent on the springs. The growth of cities has led to greater use of water by people and has increased problems with water pollution and sludge buildup. The introduction of non-native species is also a threat because they can destroy aquatic vegetation, attack endangered animals or compete with them for food.
With this information, we can conclude that human activity would likely decrease the salamanders' survivability is the growth of cities, which has led to greater use of water by people and increased problems of water pollution and sludge buildup.
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What are two simple things people can do to conserve energy?
What is photosynthesis? What does it involve?
Is platypus a type of fish
Explain
Question: "Is platypus a type of fish?"
Explanation: The platypus is classed as a mammal because it has fur and feeds its young with milk. It flaps a beaver-like tail. But it also has bird and reptile features a duck-like bill and webbed feet.
Answer:
yes done to explaine in down
Explanation:
ty for rhe points
Give two function of the skull
Answer:
Provide protection and structure
Explanation:
elotes and esquites are made from what type of vegetable?
Answer:
Esquites share the same ingredients with elote fresh corn, mayonnaise, cilantro and chili powder. The combination is sublime
The __________ nervous system consists of motor neurons that regulate skeletal muscle contractions.
Answer: Somatic neurons regulate skeletal mustle contractions
which type of orchid is the best for houseplant beginners?
Answer:
For those who are new to growing orchids or those who love the beautiful blooms, the Phalaenopsis orchid is considered to be the best orchid for beginners. Our online video will help you pick the perfect orchid for your home. Phalaenopsis orchids are also known as “moth orchids” for the shape of their petals.
I have a Phalaenopsis Orchid in my house, it's very easy to take care of. Like a fish, but fish cost more money.
Explanation:
Water and sun, that's all there is to it.
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3. What would be an example of deposition?
Answer:
frost
Explanation:
Frost is the deposition of water vapour from humid air or air containing water vapour on to a solid surface. Solid frost is formed when a surface, for example a leaf, is at a temperature lower than the freezing point of water and the surrounding air is humid.
In sub-freezing air, water vapour changes directly to ice without first becoming a liquid. This is how frost and hoar frost form on the ground or other surfaces. Another example is when frost forms on a leaf.
Which of these is the most likely prediction that the meteorologist would make about the weather? There is a possibility of
precipitation
hurricane
tornado
fair weather
Answer:
Precipitation or Fair Weather
Explanation:
Of these choices, a meteorologist is most likely to predict precipitation. Hurricanes and tornados are relatively rare occurences.
an ecology graduate student gave an oral report. What important lesson has been learned about wildlife and forest management since the turn of the century, based on this information -
The important lesson learned is that the study of ecology can be fundamental in a management program.
What is ecology management?The expression 'ecology management' makes reference to the strategies aimed at enhancing the ecological features of a geographic area.
Ecology management is a fundamental issue to achieve sustainable ecology development.
In conclusion, the important lesson learned is that the study of ecology can be fundamental in a management program.
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Match each term to the appropriate definition.
speed with direction
change in velocity
how fast an object moves
location used for comparison
velocity
reference point
acceleration
speed
Answer:
velocity- speed with direction
reference point- location use for comparison
acceleration-change in velocity
speed- how fast an object moves
Which of the following is NOT a process farmers used long ago to increase the food supply?
A. used pesticides to protect crops from bugs
B. diverted streams for irrigation
C. domesticated wild animals and bred them
D. cleared forests for open land for crops
Answer:
b. diverted streams for irrigation
13. Give one use for ethyne.
Answer:
Ethyne is useful for artificial ripening and preservation of fruits. It is useful in acetylene lamps to generate light. Ethyne is used to prepare various organic compounds. It is also useful to manufacture important organic compounds like acetic acid, acetaldehyde, ethyl alcohol and polymers like PVC, etc.
Explanation:
Since ethyne burns with a very hot flame, one of its most notable applications is in oxyacetylene gas welding and oxyacetylene gas cutting. When ethyne is subjected to combustion with oxygen, the flame created is known to have a temperature of roughly 3600 Kelvin.
In general, what happens to the hormone levels between days 21-27 just prior to menstruation if the egg was not fertilized
If the egg has not been fertilized, the increase in progesterone and decrease in estrogen, forcing the egg to be expelled.
What hormones change during menstruation?It is known that in the premenstrual period there is a drop in serotonin levels. The second important factor to cause PMS is the hormonal change that occurs in the second half of the menstrual cycle, with an increase in progesterone and a decrease in estrogen.
With this information, we can conclude that if the egg has not been fertilized, the increase in progesterone and decrease in estrogen, forcing the egg to be expelled.
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Which phrase correctly identifies one way that veins function in the circulatory system?
Blood is carried under high pressure in veins.
Gas exchange takes place over the thick walls of veins.
Blood is prevented from backflow by valves in veins.
Nutrient exchange takes place over the thin walls of veins.
Veins carry blood back to the heart--often against the pull of gravity.
Answer:
Blood is prevented from backflow by valves in veins.
Explanation:
A fossil of a new primate species is discovered. scientists find evidence that members of this species traveled long distances without putting their hands down on the ground and used tools. which trait would the fossil most likely have? a foramen magnum at the back of the skull a curve in the lumbar region of the spine a femur angled outward an opposable big toe
The trait would the fossil most likely have is a curve in the lumber region of the spine.
What is the concept of fossil?Fossils are remains or traces of animals and plants preserved in rocks. Remains are parts of an animal (eg bones, teeth, scales) or plant (eg trunks) and traces are evidence of its existence or activities (eg footprints).
From the fossils it is possible to see the evolutions that the animals suffered in this case it was a curve in the lumber region of the spine.
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Answer:
b. a curve in the lumbar region of the spine
Explanation:
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which is better to live in? North Korea or south Korea? state their resources.
3 paragraphs!
(useless answers will be reported)
Answer:
South Korea is better because people believe that South Korea is more powerful even though the North has a stronger army.
While the North communist dictatorship the South offers its citizens far more freedom than the north does. (Fact: NK is one of the 5 communist countries in the world).
Lastly, South Korea is a safe place to visit and many people prefer it over the North.
Given the cascade of events leading to ischemia-produced brain damage, it has been suggested that __________ antagonists administered immediately after a stroke might reduce the subsequent development of brain damage.
Answer: glutamate
Explanation: Given the cascade of events leading to ischemia-produced brain damage, it has been suggested that glutamate antagonists administered immediately after a stroke might reduce the subsequent development of brain damage.
Sulfates are considered secondary pollutants because.
Sulfates are considered secondary pollutants because they result from the transformation of primary pollutants.
Reason: Primary pollutants are pollutants emitted directly into the environment while secondary pollutants are emitted after they are formed in the atmosphere.
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