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Eliza places an 18-gram piece of an unknown substance into a graduated cylinder that is filled with 5 mL of water, and the water rises from the 5 mL line to the 8 mL line. What is the density of the unknown substance in g/mL?
Answers
The density of the unknown substance is 3.6 g/ml
As,
\(d=\frac{mass}{volume}\)
where,
Mass= 18 grams
Volume = 5 ml
d \(=\frac{18}{5} \frac{g}{ml}\)
d = 3.6 g/ml
What is Density?
Density is the mass of a material substance per unit volume.
The formula for density is
\(d=\frac{M}{V}\)
M is mass
V is volume
d is density
Grams per cubic centimeter are a typical unit of measurement for density.
We can calculate what materials will float and sink when placed in a liquid using the concept of density, which is a crucial idea. The rule of thumb is that objects will float as long as their density is lower than the liquid's density.
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Related Questions
Bakit mahalagang tuparin ang tungkulin sa pamayanan?
Answers
Answer:
dahil tayo ay isang mamayaman na kailangan tuparin ang mga tungkulin at mga pananagutan. Dapat ito tuparin ang isabuhay upang maka kamit ng kapayapaan, kaunlaran at kaayusan sa kinabibilang na lugar.
Explanation:
:)
HELP PLEASE! FASTT!!Which of the following conclusions is best supported by the information in the table above?
A. DNA has a double helix antiparallel structure.
B. The types of bases vary greatly among different species.
C. More complex organisms like humans and salmon have greater levels of adenine and thymine than
simpler organisms like bacteria and fungus.
D. Levels of adenine are always very similar to the amount of thymine, and the amount of cytosine is
always similar to the amount of guanine.
Answers
PLEASE RESPOND QUICKLY
Answers
Answer:
It could be any of the following except thymine.
Incorrect Question 7 In which of these places on Earth does time run (slightly) slower, according to Physics (General Relativity)? a. At sea level. b. On top of a high mountain c. the middle of a desert d. On the dentist's chair Near a mountain lake
Answers
According to Physics (General Relativity), time runs slightly slower in option (a) At sea level compared to the other options. This is due to the stronger gravitational force at sea level, which causes time dilation as predicted by General Relativity.
According to the theory of General Relativity, time runs slightly slower in a stronger gravitational field. This means that time would run slower on the surface of the Earth at sea level compared to a high mountain, the middle of a desert, or near a mountain lake. At sea level. This is because the gravitational force at sea level is stronger than at higher elevations, resulting in time dilation effects. However, the difference is extremely small and can only be measured with very precise atomic clocks.
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(Uhm help?) The law of conservation of energy states that when there is an energy transfer or transformation, energy is lost.
Answers
Assuming this is a true/false question, the answer would be false.
According to the law of conservation of energy, energy is neither created nor destroyed; it simply changes forms.
Unless you are saying that some energy would be lost as heat, This is true.
Answer:
ae you trying to find the meaning?
Explanation:
The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside. The only way to use energy is to transform energy from one form to another.
ex: the cue ball is shot at a stationary 8 ball. The cue ball has energy. When the cue ball hits the 8 ball, the energy transfers from the cue ball to the 8 ball, sending the 8 ball into motion. The cue ball loses energy because the energy it had has been transferred to the 8 ball, so the cue ball slows down.
The primary effect of dumping raw sewage into ocean water is a sharp increase in the nutrient load. How do you think this will affect the reef?
An increase in nutrient load will affect the reef (positively/negatively), because…
Answers
Answer:
negatively
Explanation:
this is because the reef and both the water will be polluted and change color
if the bauxite mines in jamaica and brazil were fully exploited, which biome would be the most affected?
Answers
if the bauxite mines in Jamaica and brazil were fully exploited, the forest biome would be the most affected because the lands will be cleared where huge vegetation present in the form of trees and shrubs.
What are biome and its types?A biome is defined as a biogeographical unit that consists of a biological community that is formed due to the physical environment i.e. habitat in which they are present and shared a similar climate. Biomes may present in more than one continent. Biome is a broader term as compared to habitat and can consist of a variety of habitats. Terrestrial biomes are grasslands, deserts, tropical forests whereas freshwater biomes are polar freshwaters, large lakes, tropical and sub-tropical coastal rivers, and temperate coastal rivers, etc. Continental shelves, tropical coral, and kelp forests are examples of Marine biomes. There is a general idea among ecologists that our complex natural world can be based on temperature and rainfall. Biome can be classified into six major biomes such as desert, tundra, grassland, deciduous forest, coniferous forest, and tropical forest.
So we can conclude that the forest biome is most affected due to the full exploitation of bauxite mines.
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If plants were removed from this ecosystem, which of the following organisms would be affected?
OA.
moose
ОВ.
wolves
OC.
hawks
OD.
all of these
Answers
Answer:
all of these
Explanation:
the moose eat the plants, the wolves kill them, and Im pretty sure the hawks Scavage the left-alone corpse of the moose.
Which of the following is an advantage of nuclear energy?
Standard 3b
Group of answer choices
It does not produce solid waste.
It is not cost-efficient.
It poses no safety risks.
It does not produce air pollution.
Answers
Answer:
it does not produce solid waste.
the dermal layer primarily responsible for the strength of the skin is the __________ layer.
Answers
The dermal layer primarily responsible for the strength of the skin is the collagen layer.
Collagen is a type of protein, and it provides strength and structure to the skin. This layer of skin contains the majority of the connective tissue in the skin, which helps to support and protect the other layers of skin. It also provides the skin with elasticity, allowing it to stretch and move without tearing or becoming overly dry.
The collagen layer also helps to regulate the amount of moisture in the skin, keeping it hydrated and healthy. It also helps to protect the skin from the sun's UV rays, and it helps to regulate the temperature of the skin. Without collagen, the skin would be weak and prone to damage, so it is an essential part of the skin's structure.
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How does mining impact the environment?
It has a positive impact on the environment by permanently altering the ecosystem.
It has a positive impact on the environment by releasing chemicals into the environment.
It has a negative impact on the environment by allowing toxic chemicals to harm wildlife.
It has a negative impact on the environment by creating new niches for wildlife to inhabit
Answers
Answer:
It has a negative impact on the environment by allowing toxic chemicals to harm wildlife.
Explanation:
Mining refers to the act of extracting minerals and other valuable solids from the earth's crust. The process of mining can have adverse effect on an ecosystem in the sense that wildlife is threatened during the process.
During the mining process, chemicals, which are toxic to living organisms, from the minerals gets washed into the areas surrounding the mining site. Thereby, causing serious harm to the wildlife living in those areas.
Answer:
C
Explanation:
Calculate the Fixation index in the Subpopulation relative to the Total population based on the information provided. a. 0
b. 0.03
c. 0.09
d. 0.19
e. 0.25
Hint:
First calculate the average which is just (Pop 1 + Pop 2)/2 for each genotype. Then calculate the allele frequency for a and A based on the average numbers. Once you have a and A calculate the expected genotypes frequencies. The fixation index will be equal to (2pq - H)/2pq, where 2pq is the expected genotype frequency of the heterozygous and H is the average frequency of the heterozygous in the overall population.
Answers
0.19 is the Fixation index in the subpopulation relative to the Total population based on the information provided.
What do you mean by fixation index?The lower the genetic distance. between populations, the more breeding there is between them and the less isolated. they are from one another. This genetic distance value is a number that is also known. as the fixation index or FST value.
High FST implies a considerable degree of differentiation among populations. FIS (inbreeding coefficient) is the proportion of the variance in the subpopulation contained in an individual. High FIS implies a considerable degree of inbreeding.
For populations of plants which clearly belong to the same species, values of FST greater than 15% are considered "great" or "significant" differentiation, while values below 5% are considered "small" or "insignificant" differentiation.
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please help asap thank you !!!
Answers
Answer:
Contour interval = 200
Explanation:
Hi, could someone tell me what should be in the blank space of my concept map about the cell membrane?
Answers
*100 POINTS* | No Links, thank you in advance for your help.
Creating a new, sealed biosphere doesn’t have to cost millions of dollars. With little effort, you can create your own, small, enclosed bio-system. The following sketch is a schematic representation of such a project.
Name the divisions of the Biosphere above labeled:
A.
B.
C.
Describe at least three interactions between the living and non-living components of the Biosphere above:
1.
2.
3.
Answers
Answer:
1. The bottle itself is growing living plants from inside.
2. Because of the gravity pull between the lid of the cup and the water, the water is flowing through the bottom lid.
3. The bugs in the bottle are living inside an ecosystem that is not natural.
Explanation:
I hope that this helps, and I hope that you ace your assignment/quiz/test. This is from Edge correct? Because I think that I did this before...
Answer:
lithosphere
atmosphere
hydrosphere
All the genetic mutations may occur spontaneously in organisms is t he incidence of such mutations may be increased by what?
Answers
Answer:
Both physical and chemical factors
Explanation:
A mutation is any alteration in the DNA sequence of the genome of a particular cell/organism. Depending on the type and localization, a mutation can be neutral, deleterious, or even beneficial for the individual that possesses it. Moreover, the mutation rate refers to the probability for a mutation to appear in a cell/organism. Exposure to physical environmental factors (e.g. ultraviolet radiation, X-rays, gamma rays, etc) and chemical factors (e.g., bromine) can increase this likelihood.
Answer:
physical and chemical factors
Explanation:
Factors that alter the critical chemical and physical characteristics of ecological systems include temperature, pH electrochemical (redox) potential, and the transparency of air and water.
(2pts) please clearly draw and upload the mechanism for halogenation of acetanilide:
Answers
The halogenation of acetanilide involves the substitution of a hydrogen atom with a halogen atom, typically chlorine or bromine.
The mechanism begins with the formation of an intermediate, in which the halogen molecule is polarized by the acetanilide molecule, causing the halogen molecule to become electrophilic.
The electrophilic halogen attacks the nitrogen atom of the acetanilide, breaking the nitrogen-carbon bond and forming a cationic intermediate.
This intermediate is then attacked by the halide ion, replacing the hydrogen atom and forming the final halogenated product. The overall reaction is typically carried out using a halogenating agent, such as N-bromosuccinimide or N-chlorosuccinimide, in the presence of an acid catalyst.
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Alice was participating in a photosynthesis lab for science class. The lab procedures instructed Alice to prepare a test tube containing water, a sprig of elodea (a common aquarium plant), and 10 g of sodium bicarbonate (NaHCO3). She was then instructed to place the test tube in front of a strong light source for one minute. Alice noticed tiny bubbles forming on the leaves of the elodea. What is the most logical explanation for why Alice saw bubbles forming on the leaves of the elodea?Group of answer choicesThe bubbles formed as a result of the hydrogen from the sodium bicarbonate mixture dissolving the elodea leaves.The bubbles formed from the release of water molecules from the elodea leaves.The bubbles formed as the elodea plant released oxygen from the elodea leaves.The bubbles formed as the elodea plant released carbon dioxide from the elodea leaves.
Answers
Step 1.
Write down the experiment data.
- tube containing water;
- alodea (photosynthetic organism);
- 10 g of sodium bicarbonate;
- light source.
Step 2.
Why bubbles are formed on the leaves of the alodea?
The experiment have all the condictions for photosynthesis, since it provides: water (that is in the tube), CO2 (because of the dissolved sodium bicarbonate), light (because of the string light source). Therefore the most ogical explanation for Alice experiment results is: the bubbles formed as the elodea plant releases oxygen from the elodea leaves, that because with all the elements in the experiment the plant can do a normal photosynthetic process that way realing oxygen in the tube and forming bubbles of "air".
how does the plasma membrane contribute to the structure and function of the cell?
Answers
Answer:
The plasma membrane, also called the cell membrane, is the membrane found in all cells that separates the interior of the cell from the outside environment. ... The plasma membrane consists of a lipid bilayer that is semipermeable. The plasma membrane regulates the transport of materials entering and exiting the cell.
A cell is protected by its cell membrane, also known as the plasma membrane. Additionally, it moves hazardous materials out of the cell and carries nutrients into the cell.
What is a cell membrane?All cells' interiors are protected from the outside world by a biological membrane called the cell membrane. A cell is protected by its cell membrane, also known as the plasma membrane. Additionally, it maintains a constant environment inside the cell, and that membrane serves a variety of purposes. One is to move substances out of the cell that are toxic as well as nutrients into the cell.
Glycerophospholipids, molecules made of glycerol, a phosphate group, and two fatty acid chains, are what make up cellular membranes, including plasma membranes and internal membranes.
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what does the fittest mean in the evolution sense
Answers
Example :
cells
of 4
JU
Question 1
Which of the following compounds can be classified as lipids? Select all that apply.
A) peptides
B) steroids
C) saturated fatty acids
D) nucleic acids
E) disaccharides
OF) phospholipids
G) enzymes
DH) unsaturated fatty acids
Answers
The following compounds can be classified as lipids: steroids, saturated fatty acids, phospholipids, unsaturated fatty acids.
WHAT ARE LIPIDS:
Lipids are one of the four biomolecules in nature; the other three being proteins, nucleic acids and carbohydrates. Lipids are composed of long chains of carbon, hydrogen and oxygen. They are insoluble in water.Lipids consists of sterols, phospholipids, fats, triglycerides, unsaturated and saturated fats etc.Therefore, the following compounds can be classified as lipids: steroids, saturated fatty acids, phospholipids, unsaturated fatty acids
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How can scientists determine the presence of different types of carbohydrates?
Group of answer choices
A.) They use chemical indicators as a quantitative test
B.) They use chemical indicators as a qualitative test
C.) They use physical indicators as a quantitative test
D.) They use physical indicators as a qualitative test
Answers
A.) They use chemical indicators as a quantitative test. In a broad sense, carbohydrates are categorised according to the level of complexity they possess.
Monosaccharides refer to free sugars such as glucose and fructose; disaccharides include sucrose and maltose; and polysaccharides include starches and celluloses.
Starch and sugars are the two most common forms of carbohydrates that may be found in the foods we eat.
Examine the Starch.
Take just a little sample of each food item that will be evaluated.Put two or three drops of the iodine solution on it.Take note of what colour the food item is.The appearance of a blue-black colour indicates the presence of starch in the food item that was analysed.Learn more about Monosaccharides here:
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When is the time you can consider a disease as congenital?
Answers
A disease can be considered congenital if it is present at or before birth and results from genetic factors, prenatal development, or environmental exposures that occur during pregnancy.
Also called birth defects, congenital anomalies or congenital malformations, these conditions develop prenatally and may be identified before or at birth, or later in life. Congenital diseases can also be inherited from parents who carry the genetic mutations that cause the disease. Examples of congenital diseases include Down syndrome, cystic fibrosis, and congenital heart defects. In some cases, congenital diseases may not become apparent until later in life, but they are still considered congenital because they were present from birth.
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PLEASE HELP!!!
ITS MY LAST QUESTON ON MY QUIZZZZ
Answers
Wth ok hang on i'll help-
Explanation:
Which is a nonrenewable resource? *
cotton
minerals
wool
air
Answers
what is heat capacity?
Answers
Answer:
The heat capacity or thermal capacity of a material is a physical property defined as the quantity of heat to be supplied to a given mass of a material in order to alter the temperature of the unit. Joule per kelvin is the SI unit of heat power. A detailed property is heat power. Heat capacity is defined as the quantity of heat needed to increase the temperature of the material mass by 1 °C.
Explanation:
have a good day :)
Explanation:
Heat capacity,ratio of heat absorbed by a material to the temperature change. it is usually expressed as calories per degree in terms of the actual amount of material being considered,most commonly applied mole ( the molecular weight in gram).The heat capacity in calories per gram is called specific heat.
I hope it's helpful!
what is Biology???????
Answers
Answer:
Biology is the study of life. The word "biology" is derived from the Greek words "bios" (meaning life) and "logos" (meaning "study"). In general, biologists study the structure, function, growth, origin, evolution and distribution of living organisms.
Explanation:
I HOPE ITS HELP YOU
Answer:
Biology.
Explanation:
Bio means life and ology means to study so combine those together and you have this.
Biology = The study of life.
a surgical procedure that creates an opening between the intestine and the surface of the body that allows for elimination of waste is called
Answers
The surgical procedure that creates an opening between the intestine and the surface of the body that allows for the elimination of waste is called a colostomy. This procedure is usually done when a person's colon or rectum is damaged or diseased, and they are unable to have a normal bowel movement. During a colostomy, the surgeon creates an opening, called a stoma, in the abdominal wall, and then attaches a bag to the stoma to collect the waste. The stoma can be temporary or permanent, depending on the reason for the surgery.
A colostomy can be a life-changing surgical procedure, and it may take some time for the person to adjust to the changes in their body and their new way of eliminating waste. However, with the help of a healthcare team, many people are able to live full and active lives after a colostomy. It is important to follow the healthcare team's instructions on caring for the stoma and the surrounding skin to prevent infections and other complications. Additionally, people with colostomies may benefit from working with a dietitian to ensure they are getting proper nutrition and staying hydrated.
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the metabolic breakdown of one molecule of glucose harvests the greatest amount of energy during which aerobic process?
Answers
The metabolic breakdown of one molecule of glucose harvests the greatest amount of energy during the aerobic process of oxidative phosphorylation.
During oxidative phosphorylation, electron transport chain (ETC) complexes I-IV located in the inner mitochondrial membrane generate an electrochemical gradient across the membrane, which drives ATP synthesis by ATP synthase. This process results in the production of 34-36 molecules of ATP per molecule of glucose, making oxidative phosphorylation the most efficient means of energy production during glucose metabolism. Other aerobic processes such as glycolysis and the Krebs cycle also produce ATP, but they do so at a much lower rate than oxidative phosphorylation. Glycolysis produces a net of 2 molecules of ATP per glucose molecule, while the Krebs cycle produces 2 molecules of ATP per glucose molecule.
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Which of the following actions increases the volume of your lungs?
d. Gases move from areas of lower pressure.
c. Air pressure increases inside the lungs.
a. The diaphragm flattens and moves downward.
b. The rib cage becomes smaller.
Answers
Answer:
B
Explanation:
During the process of inhalation, the lung volume expands as a result of the contraction of the diaphragm and intercostal muscles (the muscles that are connected to the rib cage), thus expanding the thoracic cavity. Due to this increase in volume, the pressure is decreased, based on the principles of Boyle's Law