The melting and boiling points of quartz are very high because of the compound’s ____________________.
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Answer:
Network Structure
Explanation:
Related Questions
Which accurately describes reproduction in gymnosperms? Select four options.
Some require heat for seed dispersal.
Female cones produce pollen.
Most gymnosperms produce male and female cones.
Fertilized ovules grow into seeds.
Male and female cones may grow on the same plant.
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The four options that accurately describe reproduction in gymnosperms are:Fertilized ovules grow into seeds.Male and female cones may grow on the same plant.Most gymnosperms produce male and female cones.Some require heat for seed dispersal.Female cones do not produce pollen in gymnosperms. Instead, male cones produce pollen which is then carried by the wind or insects to the female cones for fertilization.
What kind of rocks would you expect to see on Mars? What evidence supports your response?
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What type of person studies and collects data on the weather?
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How to work out the relative mass of potassium? What is the calculation? ( explained very easily )
Answers
Answer:
39
Explanation:
Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.
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(1/12)th Mass of one C12 atom
What is the charge on the Cr in Cr2O72-
Answers
Answer:
+6.
Explanation:
So, a chromium atom here has an oxidation number of +6.
3. A recent flood in the area has caused many short-term changes to
the ecosystem. Which is a long-term change?
A. Standing water in the streets and sewers
B. Temporary displacement of organisms
C. Permanent change in the landscape
D. Poor water quality in rivers and streams
Answers
Answer:
c
Explanation:
While standing water in the streets and sewers (option A) and poor water quality in rivers and streams (option D) may persist for some time after the flood, they are generally considered short-term changes as they can eventually be remedied through clean-up efforts and restoration programs.
Temporary displacement of organisms (option B) can also be considered a short-term change, as organisms will eventually return to their original habitats once conditions improve.
However, a permanent change in the landscape (option C) such as altered river channels, new water bodies, or changes in topography, can have lasting effects on the ecosystem and its inhabitants. These changes may alter habitat suitability, nutrient cycling, and water availability, which can impact the ecosystem for years or even decades to come.
Answer: C
Explanation:
The landscape could be flooded. Houses and buildings may be restricted.
A student places six plants of equal sizes into six different, equal-sized pots containing the same amounts of potting soil and labels the pots U, V, W, X, Y, and Z. Using two pots in each of the three experiments, the student varies the amounts of sunlight, water, or air one plant receives but leaves the other pot unchanged. The tables show the factor varied in each pot and the observations made by the student after one week.
Which conclusion best explains the connection among all three experiments?
A. All plants grown in pots require the same amounts of the abiotic factors for their growth and survival.
B. All plants of the same size require the same amounts of the abiotic factors for their growth and survival.
C. The plants require a balance of all abiotic factors for their growth and survival.
D. The plants depend very little on abiotic factors for their growth and survival.
Answers
Answer: I would go with D.
Explanation: Sorry if it is incorrect
8.
In our experiment that will compare how long it will take for 100 ml distilled water to evaporate from a from a 5" diameter container. This will be the control group. For the experiment group, we will use 100 ml of distilled water and dissolve 10 grams of table salt in the water. We will use the same diameter dish for both samples so the same amount of water surface is exposed to the air.
What would a good hypothesis be?
When the salt water was almost evaporated, the higher concentration of salt might have slowed the evaporation process by blocking the air from the moisture.
We think that a pure water sample will dissolve faster than a salt water solution because salt adds more mass to equal quantities of liquids.
It took a total of 31hrs. 15 min. to evaporate the pure water and 32hrs. 10 min for the salt water.
We poured the water into each 5" dish and set the containers on a table. We noted the time: 8:00 a.m. Saturday.
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Answer:The answer is C: How long does it take distilled water to evaporate from a 5” diameter container?
Explanation:
In the air, a salt solution will evaporate more slowly than pure water.
What is Evaporation?
The process by which a liquid transforms into a gas state is called evaporation. A surface phenomena, that is. The amount of evaporation depends on the humidity. If the air is humid, it is virtually saturated, which means that evaporation will occur at a much slower rate.
Since evaporation takes place on the liquid's surface, the salt molecules that are present on the water's surface prevent as much water from evaporating. As a result, salt water evaporates more slowly than pure water.
As a result, the salt solution will evaporate from the air more slowly than pure water.
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How do we draw a lewis dot diagram (electron dot diagram) for sodium ethyl xanthate? Please I'll mark brainliest for the correct answer.
Answers
Refer to the attachment
The toucan uses its long beak to reach fruits and berries growing on trees in the forest. The energy stored in the fruit and berries is passed on to the toucan when it is eaten. What is the source of energy for the fruits and berries growing on the trees in the tropical forest?
A: Soil
B. Sunlight
C. Heat
D. Water
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Answer:
The type of adaptations of the Toucan and Monstera Plant are physical adaptions. Both of these adapted physical characteristics help these organisms to survive. The difference in their physical adaptation is that in the Toucan, the physical characteristic helps the Toucan consume nutrients. Meanwhile, the adaptation of the Monstera Plant helps prevent harmful things such as mold.
Plants use photosynthesis to convert light into cellular energy, which allows them to make “food” out of the water and nutrients from the soil.
5g of the mixture of gold and zinc metals are dropped into 20% of a dilute solution of HCl to form 1.12L of gas at STP.( H =1, Zn= 65, Cl =35.5, Au =108, at STP: 2g of H2 has 22.4L))
a.Find the mass of zinc metal
b.Find the mass of gold metal
c.Find the mass of the acidic solution
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Answer:
it is a poem
Explanation:
The surface of the land is shaped by the process of erosion and deposition caused by:
lava
water
wind
tsunamis
glaciers
waves
gravity
earthquakes
its a select that apply!
Answers
Answer:
Explanation:
hi
Explanation: Deposition occurs when the agents (wind or water) of erosion lay down sediment. Deposition changes the shape of the land. Water’s movement (both on land and underground) cause weathering and erosion, which change the land’a surface features and creates underground formations.
What do the forms of the highlighted limbs in the illustration tell you about their functions in each animal?
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Answer: there is no image
Explanation:
How will you know if a chemical change has occurred when the reactants are combined? Use evidence and scientific reasoning to support your answer.
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Answer:
I would know if a chemical change is occurred if a new material is formed which doesn't share any characteristics of the reactants example if we expose iron to water and air a new material is formed (rust) which doesn't share any characteristics of iron,water or air.
Answer for points and brainliest!! :)
What is one way these stems help these cactus plants survive?
A. They take energy from sunlight.
B. They take minerals from soil.
C. They hold the plant in the ground.
D. They make seeds for reproduction.
Answers
Answer:
B.
Explanation:
A cactus stores water in its stem, which allows it to survive and thrive in desert-like environments. Its stem is made up of thick, spongy tissue that helps to absorb and retain large amounts of water. This stored water is then used to keep the cactus hydrated during times of drought and heat.
Relate two factors that can limit the accuracy and precision of measurements.
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Hope this helps
Temperature, humidity, pressure, gravity, altitude, vibration, stress, strain, and illumination are among the variables.
What are precision and accuracy?
Accuracy is the capacity of an instrument to measure the precise value. In other words, it refers to how closely the measured value resembles a reference or genuine value. Small readings can be taken to increase accuracy. The calculation's inaccuracy is decreased by the little reading.
The precision of a material is defined as the degree to which two or more measurements agree with one another. It is incredibly precise but not always accurate to measure something if you weigh it five times and get 3.2 kg each time. Accuracy is not necessary for precision.
The degree to which a measurement is accurate in relation to its real value. The degree to which the same results are produced by repeated measurements under the same circumstances is known as precision.
Therefore, temperature, humidity, pressure, gravity, altitude, vibration, stress, strain, and illumination are among the variables.
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The image shows the gravitational effects of the moon (not shown) on the Earth (depicted here) and the resulting tides that form. Which statements are true about the gravitational force between the Earth and the moon? Select ALL that apply.
Responses
A The moon exerts equal gravitational force on all locations of the Earth
B The moon exerts a smaller gravitational force on Earth locations that are farther away
C The moon must be to the right of the Earth because gravity is an attractive force.
D The moon must be to the left of the Earth because gravity is a repulsive force.
E The moon exerts a greater gravitational force on the Earth than the sun does.
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Answer: B
Explanation:
Brainliest please! (if im right)
In chemistry, how many oxygen molecules are in the formula for Sugar?
C12H22O11
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Answer:
11
So, 1 mole of sucrose contains 12 moles of carbon atoms, 22 moles of hydrogen atoms, and 11 moles of oxygen atoms.
Explanation:
Mark Brainliest
Answer: 11
The white stuff we know as sugar is sucrose, a molecule composed of 12 atoms of carbon, 22 atoms of hydrogen, and 11 atoms of oxygen (C12H22O11). All compounds made from these three elements, sugar is a carbohydrate.
Hope this helps! Pls give brainliest!
CO2(g) + NH3(g) + H2O(l) → NH4HCO3(s) witch type of reaction plzz within 1 hour
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What causes the element name to change? (Protons, electron, or neutrons (It can be more than one))
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Answer:
protons
Explanation:
Yeah protons can change the element name
is copper a renewable resource? explain your reasoning
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Jeremy is making a table about the different factors that affect dissolving. What should Jeremy write to complete the temperature category.
A Faster Rate: Lower temperature, Lower Rate: Lower temperature
B Faster Rate: Higher temperature, Lower Rate: Lower temperature
C Faster Rate: Lower temperature, Lower Rate: Higher temperature
D Faster Rate: Higher temperature, Lower Rate: Higher temperature
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Answer:
Explanation:
mmmmymyyyy
USE YOUR OWN WORDS. Each question must have a three sentence long answer!
1. If there is not one scientific method, then what do all scientists have in common?
2. How is a theory similar to and different from a law?
3. What is the difference between data and evidence?
4. Why do scientists use models, and why do all models have limitations?
5. What makes a good scientific question?ANSWER Why do scientific ideas sometimes change?
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Answer:
1. Scientists use experimentation and careful observation to collect evidence to support those explanations. Although there is no single scientific method, all types of scientists use the eight science and engineering practices in different orders and combinations to do their work.
2. In simplest terms, a law predicts what happens while a theory proposes why. A theory will never grow up into a law, though the development of one often triggers progress on the other
3.Data is just data and has no intrinsic meaning on its own. Evidence has to be evidence for or of something; an argument, an opinion, a viewpoint or a hypothesis. The evidence you use depends on your argument.
4.All models have limitations because they are not representative of every possible scenario. They use current knowledge and scientific data, but as those are subject to change, the models based off that knowledge and data are subject to change as well. ... Scientific models are not a replacement for experimentation.
5.What makes a good scientific question is that it can be answered by direct observations or with scientific tools. Examples of questions that are not scientific are based on values or opinions like what people believe is right or wrong, or beautiful or ugly. (to the part that says ANSWER ---->) Scientific ideas change over time as our evidence improves. The more experiments we do and the more data we collect, the better our scientific ideas become. ... When a brand-new idea is suggested, the first step is to collect evidence. But even when that evidence is collected, understanding it can be difficult.
Select the correct answer from the list.
1: The (gravity, electromagnetic radiation) of dark matter causes baryonic gas and dust to (break apart, clump together).
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Answer:
The gravity of dark matter causes baryonic gas and dust to clump together.
Hope this helped
The correct sequence will be: The gravity of dark matter causes Byronic gas and dust to clump together.
What is Electromagnetic radiation?To produce electromagnetic radiation, electrically charged particles must pass through matter or a vacuum, or oscillating magnetic and electric disturbances must occur. When a disturbance occurs, the electric and magnetic fields are at an angle of 90 degrees, and the combined waves move perpendicular to both of these oscillating fields.
Electromagnetic radiation causes the release of photons. These are bundles of quantized light energy or harmonic waves that travel at the speed of light. The energy is then split up into several groups by the wavelength of the electromagnetic spectrum. These magnetic and electric waves move perpendicular to one another and have certain characteristics including wavelength, amplitude, and frequency.
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water is wet. true or false? Why?
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Answer:
True water is wet because when something is wet in this case it's water it has water on it at a molecular level. Water molecules are bonded on top of each other so it's wet.
In a few sentences, describe what this weather map tells you about the weather.
Answers
Answer:
You can download the answer here
Explanation:
a) The formula of a compound is AB. If the valency of B is 3, what will be the valency of A? b) Baking soda is a white solid and has the formula NaHCO3. How many of each type of atoms are there in it?
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Answer:
The valency of B will be 5
Baking soda contains one sodium atom, one hydrogen atom, one carbon atom, and three oxygen atoms
Explanation:
Hope it will help you:)
Answer:The valency of B will be 5
Baking soda contains one sodium atom, one hydrogen atom, one carbon atom, and three oxygen atoms
Explanation:
Which choice describes an organism found in the understory of a rainforest? Responses
A. Palms and other small trees
B. Very tall trees
C. Bacteria
D. Thick, woody vines
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Answer: Palms and other small trees
Explanation:
Answer:
A. Palms and other small trees
Explanation:
Understory Layer
Located several meters below the canopy, the understory is an even darker, stiller, and more humid environment. Plants here, such as palms and philodendrons, are much shorter and have larger leaves than plants that dominate the canopy. Understory plants’ large leaves catch the minimal sunlight reaching beyond the dense canopy.
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What do cuticles do for land plants that were not necessary for ancestors that lived in the water?
Cuticles allow them to grow bigger and taller.
Cuticles help them transport water.
Cuticles help prevent water loss.
Cuticles allow the performance of photosynthesis.
HELP PLS AND THX
Answers
Answer:prevention of water loss would be unnecessary
Explanation:
edge 2021
Cuticles are protective lining in the epidermal layer of plants. Cuticles helps to reduce water loss and protect the plants from environmental stresses.
What is cuticles?Cuticle is an organism's external layer or area that makes touch with the environment. The epidermis secretes the dead, noncellular cuticle in many invertebrate species. In humans, the cuticle is the epidermis, and this layer may include colours and chitin, similar to arthropods.
The cuticle is a protective coating that protects the epidermal cells of leaves and other organs while preventing water loss in some higher plants.
It is made up of cutin, a waxy, water-repellent compound related to suberin that is present in the corky tissue's cell walls. Hence, option c is correct.
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Genes are sections of DNA that code for a particular trait. Genes are
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Answer: Genes are transcribed into RNA molecules, which are then translated into proteins.
Explanation: Genes are sections of DNA that contribute to certain traits, characteristics or functions. Genes code for proteins or parts of proteins that influence things like the immune system, skin pigmentation, hormone production, and eye color.
Answer:
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes.
Explanation: