Which is a chemical property that was used to separate your mixture
during the lab?
Solubility
Evaporation
Filtering
None of the above. Mixtures are separated through physical means.
Answers
None of the above.
Since none of the given option is a chemical property, rather all of them are physical method of separation and physical methods do not require a chemical change.
Solubility- It is a physical property because it is easily discernible through observation and does not alter the substance's chemical makeup. For instance, salt is still salt when it dissolves in water.
Evaporation - The chemical composition of a liquid does not change when it evaporates. The only alteration is a phase shift brought on by pressure and temperature. Evaporation, or the phase transition from liquid to gas, is a physical change as a result.
Filtration - Filtration is a physical separation procedure that uses a filter medium with a complicated structure that only allows fluid to pass through it to separate solid particles and liquid from a combination.
Therefore, neither new nor broken chemical bonds are created or broken during the separation. During the separation, bonds are severed or strengthened.
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Related Questions
Question 4 of 25
What is a pattern in nature?
A. A set of measurements that answers a scientific question
OB. An event that occurs over and over
OC. A collection of scientific theories that helps scientists understand
the world
OD. An arrangement of objects that are in predictable places
Answers
The pattern in nature is option B. An event that occurs over and over.
The pattern in nature is seen in regularities of shapes found inside the natural international. these styles recur in exceptional contexts and can now and again be modeled mathematically. natural styles include symmetries, timber, spirals, meanders, waves, foams, tessellations, cracks, and stripes.
Patterns are normal and intelligible bureaucracies or sequences that may be observed at some stage in nature. clinical questions may be generated whilst scientists have a look at a pattern of activities or while something does now not healthy a longtime sample. Scientists can use patterns to classify gadgets or phenomena into corporations.
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Match each atomic combination to the appropriate functional group.
- A. B. C. D. C-O-C
- A. B. C. D. O=C-O-H
- A. B. C. D. O=C-O-C
- A. B. C. D. C-O-H
A. Alcohol
B. Carboxylic acid
C. Ester
D. Ether
Answers
Answer:
The atomic combinations can be matched to the appropriate functional groups as follows:
- A. C-O-C: C. Ester
- B. O=C-O-H: B. Carboxylic acid
- C. O=C-O-C: C. Ester
- D. C-O-H: A. Alcohol
Explanation:
25 points!!! For the following equation, give the number you would use in the mole-to-mole ratio for each of the reactants and products as well as the number you would use in the volume-to-volume
ratio for each of the gaseous reactants and products. Check to make sure the equation is balanced.
CH4(g) + O2(g) → CO2(g) + H2O (g)
Reactant/Product
CH₂(g)
O₂ (g)
CO₂(g)
H₂O(g)
Mole-to-Mole Number
Volume-to-Volume Number
If you know the volume of substance A, how would you solve for the volume of substance B? Please list the steps you would take in the
correct order.
Answers
For the given equation, the mole-to-mole ratio and volume-to-volume ratio for all the gaseous reactants and products are 1:1.
For the given equation:
CH4(g) + O2(g) → CO2(g) + H2O(g)
Reactant/Product:
CH4(g)
O2(g)
CO2(g)
H2O(g)
Mole-to-Mole Ratio:
By comparing the reactant and product coefficients, we may extract the mole-to-mole ratio from the balanced equation.
CH4(g): 1 mole
O2(g): 1 mole
CO2(g): 1 mole
H2O(g): 1 mole
All of the reactants and products have a mole-to-mole ratio of 1:1:1:1.
Ratio of Volume to Volume:
The ideal gas law, which states that under constant temperature and pressure, the volume of a gas is directly proportional to the number of moles in the gas, can be used to calculate the volume-to-volume ratio.
All gaseous reactants and products have a mole-to-mole ratio of 1:1, hence the volume-to-volume ratio will also be 1:1. As a result, the volume of drug A and substance B will be equal.
You can just take the volume of substance A as the value for substance B if you know the volume of substance A and are trying to solve for the volume of substance B. Alternatively, the quantity of substances A and Bwill be the same, given the 1:1 volume-to-volume ratio.
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The electronic structure of the atom X is : 2, 8, 1
A. In which group atom x is found:—————-
B. In which period atom x is found:—————
C. What is the name of atom x:———————-
Answers
Answer:
A. grou(I)
B. 3rd period
C. Sodium (Na)
Explanation:
it belongs to group (I) since it has one valence electron
it belongs to 3rd period since it has three energy levels
How many atoms make up a molecule of ethanol? (C2H6O)
3
12
8
9
Answers
Answer:
C2H5OH - 9 atoms
Explanation:
2C
5H
1O
1H
I think you wrote the formula for ethanol wrong but still with the one you wrote it is still 9.
What is te commond that alcws moung a fle from one rlase to ancherr?
Answers
The command that allows moving a file from one location to another is the "mv command".
The mv command renames or transfers files and folders from one directory to another. A file or directory keeps its base file name when moved to a new directory. All links to other files are preserved when you transfer a file, with the exception of when you move it to a different file system. A directory and its contents are added beneath the existing directory when you transfer a directory into it.
The TargetDirectory option of the mv command allows you to provide a new file name or a new directory path name when renaming a file or directory.
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How does temperature affect reaction rate of enzymes?
Answers
Answer:
Temperature has a significant effect on the reaction rate of enzymes. At low temperatures, the reaction rate is typically slower as the enzymes and substrate molecules move more slowly, reducing the likelihood of successful collisions between them. As the temperature increases, the reaction rate generally increases as well, due to increased enzyme activity and the higher likelihood of successful collisions.
However, at high temperatures, the reaction rate can decrease rapidly as the enzyme's structure becomes denatured or permanently altered, resulting in a loss of enzyme activity. Enzymes have an optimal temperature range, typically between 37°C to 40°C (or 98.6°F to 104°F) for human enzymes, beyond which they become less efficient or inactive.
Therefore, temperature must be carefully controlled when conducting experiments with enzymes. At temperatures close to the optimal range, enzyme activity is highest and the reaction rate is fastest. However, at temperatures outside this range, the reaction rate can slow down or the enzyme can become denatured, leading to a loss of activity.
radioactive radium (226ra ) has a half-life of 1599 years. what percent of a given amount will remain after 100 years?
Answers
After 100 years, approximately 39.78% of the original amount of radioactive radium (226Ra) will remain.
What percentage of a given amount of radioactive radium (226Ra) will remain?Radioactive decay is an exponential process, and the amount of radioactive material remaining after a certain time can be calculated using the half-life of the substance. For a substance with a half-life of 1599 years, we can use the formula:
\(N(t) = N0 * (1/2)^(t/T)\)
where N(t) is the amount of substance remaining after time t, N0 is the initial amount of substance, T is the half-life of the substance, and t is the time elapsed.
In this case, we want to find the percent of the original amount remaining after 100 years. We can plug in the values:
\(N(t) = N0 * (1/2)^(t/T)\)
\(N(t) = N0 * (1/2)^(100/1599)\)
\(N(t) = 0.3978 * N0\)
So, after 100 years, approximately 39.78% of the original amount of radioactive radium (226Ra) will remain.
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what are three different facts about mass
plz tel will give brainlyest
Answers
Answer: all mass takes up space. everything has mass. Theres a unit of mass called a slug thats not the bug!
Explanation:
1) mass is a measure of the body’s inertia
2) mass is measured in kilograms (kg)
3) mass of an object also determines the objects strength of its gravitational attraction to other bodies
Water flows through a pipe at a rate of 620 gallons every 5 1/2 minutes expressed this rate of flow and cups per second
Answers
5 1/2 minutes = 5 1/2 x 60 = 330 seconds
rate of flow = 9920/330 = 30.06 cups/second
The rate of flow of Water flows through a pipe will be 30 cups per second.
What is the rate of flow?The distance covered by the particle or the body in an hour is called the rate of flow. It is a scalar quantity. It is the ratio of gallons to time.
We know that the speed formula
Rate of flow = Gallons/Time
Water flows through a pipe at a rate of 620 gallons every 5 1/2 minutes expressed at this rate of flow and cups per second.
We know that in one gallon, there are 16 cups.
5.5 minutes = 330 seconds
The rate of flow will be
Rate of flow = (620 x 16) / 330
Rate of flow = 30 cups per second
The rate of flow of Water flows through a pipe will be 30 cups per second.
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What is the overall chemical composition of the mantle according to the lecture? Felsic Mafic Ultramafic Pure iron and nickel Question 6 Cool temperatures The temperature of the mesosphere is much higher than the asthenosphere overall, but yet is is still a ductile solid. What keeps it from melting? Distance from the Sun High pressure Low pressure 5 pts O Minerals with lower melting temperatures 5 pts
Answers
The overall chemical composition of the mantle is A) Felsic, Mafic, and Ultramafic. The mesosphere is a ductile solid despite having greater temperatures than the asthenosphere because of the B) high pressure there.
1. The mantle can have a wide range of chemical compositions, although felsic, mafic, and ultramafic rocks make up the majority of it.
Light-colored minerals like feldspar and quartz are abundant in felsic rocks. Compared to mafic and ultramafic rocks, they have a lower density and a greater silica concentration.
Darker-colored minerals like pyroxene and olivine are prevalent in mafic rocks. Compared to felsic rocks, they are denser and contain less silica.
2. Between the asthenosphere and the outer core lies a layer of the Earth's interior called the mesosphere.
Materials have higher melting points when under high pressure. As a result of being compressed closer together, the atoms and molecules find it more challenging to move and rupture the atomic or molecular connections that are necessary for melting to take place.
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Describe how electromagnetic waves are formed and
travel through space.
Answers
Answer:
Electromagnetic waves are created by a charged particle that generates an electric field. The electric field creates a magnetic field. As the charged particle moves, the electric field and magnetic field keep changing, which causes the wave to move
Answer:
Electromagnetic waves are formed by charged particles which create an electric field. The electric field generates a magnetic field. As the particle moves, the electric field changes, which causes the magnetic field to change.
Explanation:
Edge, 2022.
Which statement describes an advantage of asexual reproduction?
O Asexual reproduction results in variations in DNA.
o Asexual reproduction causes less competition for resources.
o Asexual reproduction is faster tha sexual reproduction.
O Asexual reproduction requires more energy than sexual reproduction.
Activity
Answers
Asexual reproduction is faster tha sexual reproduction.
In asexual reproduction there is mitosis. There is prophase, metaphase, anaphase, and telphase. In sexual reproduction there is meiosis. Meiosis does have prophase, metaphase, anaphase, and telophase. But it has two stages of that. So it also has prophase 2, metaphase 2, anaphase 2, and telophase 2,
Explanation:
How many moles are in 2.4x10^25 atoms?
Answers
The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12; its symbol is "mol." This site uses an exact value of 6.0221415 x 10 23 for Avogadro's number. This is the number of atoms in 1 mole of a chemical element.
Hope I helped :)
PLS HELP THIS IS SCIENCE !!
IGNORE THE QUESTIONS I ACCIDENTLY PRESSED ON
Answers
Answer:
10.)14
Explanation:
MARK AS BRAINLEST!!
Answer:
where is the answer??
Please do not just take the points without answering the question.
Select the curve that is produced by adding hydrochloric acid to 25 cm3 of sodium hydroxide.A,B,C or D
Answers
B
The sodium hydroxide (NaOH) solution is a basic solution, so the pH of that solution should be close to 14
then when adding hydrochloric acid (HCl) we start to neutralice the solution, meaning the pH must sift slowly to lower pH.
Assuming both solutions have similar concentration the pH shall shift form basic (above 7) to acid pH (below 7). Until now both B and D images agreed with the explanation given. To chose between them we need to remember that HCl is a very strong acid, which means that in solution will get to very acid solutions (very low pH values) which leaves only B as possible answer
Are you brainly, then answer this, I’ll give you brainliest
The most common reaction that alkane under go is?
Select one:
a. Substitution
b. Addition
c. Decomposition
d. Elimination
Explain please
Answers
Answer:
a.substitution
Explanation:
because one of the hydrogen atoms from the methane is replaced with a bromine atom.Alkanes undergo a substitution reaction with halogens in the presence of light. For example, in ultraviolet light , methane reacts with halogen molecules such as chlorine and bromine. This is a substitution reaction because one of the hydrogen atoms from the methane is replaced by a bromine atom.
why do vehicle engines produce nitrogen oxides
Answers
Answer:
When fuels are burned in vehicle engines, high temperatures are reached. At these high temperatures, nitrogen and oxygen from the air combine to produce nitrogen monoxide. When this nitrogen monoxide is released from vehicle exhaust systems, it combines with oxygen in the air to form nitrogen dioxide.
Explanation:
please mark me as brainlist pleaseExplanation:
Nitrogen and oxygen from the air combine at high temperatures in the engine to produce nitrogen (II) oxide by the reaction :
N2(g) + O2(g) → 2NO(g).
Nitric oxides rise in the atmosphere and are oxidized to nitrogen dioxide, NO2 which dissolves in the precipitating water to form acid rain.
edit al least six lines to obtain energy
Answers
Answer:
Sure because of the gravity of the earth
what would happen to a gummy bear after soaking for 2 days in distilled water
Answers
Answer:
it would expand
Explanation:
the gummy bear would absorb alot of water
Answer:If a gummy bear is soaked in distilled (pure) water for 24 hours, then the gummy bear will increase in size
Explanation:
Part A Inhibition of which of the following metabolic pathways would result in decreased rates of CO2 production? O fermentation and glycolysis O oxidation of pyruvate to acetyl CoA and the citric acid cycle glycolysis and the oxidation of pyruvate to acetyl COA O oxidative phosphorylation and fermentation Submit Request Answer Provide Feedback hapter 10 apter 10 Question 11 12 of Part A A mutation that disrupts cyclic electron flow in the light reactions of photosynthesis will specifically reduce the production of which of the following molecules? O NADPH O CO2 O ATP ADP and NADP Submit Recuest Answer Provide Feedback Part A Which of the following statements best summarizes the metabolic results of photorespiration? O ATP is hydrolyzed, oxygen is produced, and carbon dioxide is consumed. O ATP is hydrolyzed, carbon dioxide is produced, and oxygen is consumed. O ATP is produced, oxygen and carbon dioxide are consumed. O ATP and oxygen are produced and carbon dioxide is consumed. Submit Request Answer < Return to Assignment Provide Feedback
Answers
Photorespiration is a process which occurs in plants when there is not enough CO2 available for photosynthesis, resulting in the hydrolysis of ATP.
During photorespiration, oxygen is consumed and carbon dioxide is produced.
The light reactions of photosynthesis produce NADPH and ATP, and when cyclic electron flow is disrupted due to a mutation, the production of NADPH will be reduced.
Without NADPH, the Calvin cycle will not proceed, resulting in the production of glycolic acid, which is further broken down to form glycine, ammonia and carbon dioxide.
This process results in the hydrolysis of ATP and the consumption of oxygen, with the production of carbon dioxide as a by-product.
Photorespiration results in the hydrolysis of ATP, the consumption of oxygen and the production of carbon dioxide.
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1. when cities dumped sewage into natural waterways with limited capacity for dilution,
2. why didn't federal laws limiting pollution of rivers and streams prevent this pollution and these fires?
Answers
1. The pollution affected the health of aquatic animals and plants, making it difficult for them to survive.
2. The pollution continued to be a major issue, leading to an increase in fires caused by pollution.
1. When cities dumped sewage into natural waterways with limited capacity for dilution, the waterways became overwhelmed with pollutants, leading to an increase in water pollution.
As a result, this pollution affected the health of aquatic animals and plants, making it difficult for them to survive.
2. Federal laws limiting pollution of rivers and streams did not prevent this pollution and these fires because they were not strong enough to enforce change.
The Clean Water Act was passed in 1972 to control the discharge of pollutants into waterways, but many cities continued to dump untreated sewage into natural waterways.
As a result, the pollution continued to be a major issue, leading to an increase in fires caused by pollution.
Additionally, many cities did not have the financial resources to upgrade their sewage treatment plants, making it difficult to comply with the new regulations.
The lack of enforcement and the limited resources of cities made it difficult to prevent the pollution of rivers and streams.
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Predict the products and then balance the equation
Type of reaction : Double Replacement
Pb(NO3)2(aq) + Kl (aq)
Answers
\(\qquad \qquad\huge \underline{\boxed{\sf Answer}}\)
Here's the balanced equation for given Double displacement reaction ~
\( \sf Pb(NO_3)_2 +2 \: KI = PbI_2 +2 \: KNO_3\)
The products fored are : Lead Iodide ( PbI2 ) and Potassium Nitrate ( KNO3 )
\(\\ \rm\Rrightarrow Pb(NO_3)_2+2KI\longrightarrow 2KNO_3+PbI_2\)
On both sides
Pb=1NO_3=2K=2I=2The spectra described are compared to fingerprints. In what ways are white dwarf spectra like fingerprints
Answers
White dwarf spectra can be compared to fingerprints in several ways. Like fingerprints, each white dwarf spectrum is unique and can be used to identify and distinguish one white dwarf from another.
Additionally, just as fingerprints provide valuable information about an individual's identity, white dwarf spectra offer important insights into the physical properties, composition, and evolutionary history of the white dwarf. White dwarf spectra, obtained through the analysis of light emitted or absorbed by these stellar remnants, exhibit characteristic patterns and features that are specific to each white dwarf. Similar to how fingerprints are unique to individuals, the distinct features in white dwarf spectra allow astronomers to identify and classify different white dwarfs, distinguishing them based on their chemical composition, temperature, surface gravity, and other physical properties. By examining the spectra, scientists can learn about the elements present in the white dwarf's atmosphere, study its internal structure, and gain insights into its evolutionary path, providing valuable information for understanding stellar evolution and the life cycles of stars.
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Scenario 1: Sarah, your lab partner, accidentally poured too much
sodium chloride (chemical) into a beaker. She wants to pour the rest back
into the original container. What should you do? Explain
Scenario 2: You notice that yout lab partner is chewing gum and using a
beaker as a cup to get water. He then takes a drink from the beaker. He
assures you that it is clean and you don't have to worry. Why is this
dangerous in lab? Explain.
Scenario 3: In lab, you are working with an open flame (a birthday
candle) and your friend calls you over to see new background picture on
his chromebook. What should you do? Explain
Answers
Scenario 2: chemicals have been on beakers and they should not be drank out of, your partner should also not be eating or drinking in the lab.
Scenario 3: you should never walk away from an open flame
The patient has a bone density of 1200mg/cm^3 what is the mass of 39.5cm^3 sample
Answers
Answer:
47,400 mgExplanation:
The mass of the bone sample can be found by using the formula
mass = density × volume
From the question
density = 1200mg/cm^3
volume = 39.5cm^3
We have....
mass = 1200 × 39.5 = 47400
We have the final answer as
47,400 mgHope this helps you
the majority of ventricular filling occurs while the ventricles and atria are in what state(s)?
Answers
The majority of ventricular filling occurs while the ventricles and atria are in the diastole state.
During the cardiac cycle, the heart undergoes alternating phases of contraction and relaxation. Diastole refers to the relaxation phase when the heart chambers are filling with blood. The cardiac diastole consists of two main phases: early diastole and late diastole. The majority of ventricular filling occurs during the late diastole phase.
In this phase, both the ventricles and atria are in a relaxed state, allowing blood to flow passively from the atria into the ventricles. The atria receive blood from the veins and contract slightly to push the remaining blood into the ventricles before ventricular contraction begins. This passive filling of the ventricles accounts for most of the blood volume entering the ventricles before they contract during systole.
Thus, the ventricular filling occurs primarily during the diastole state, particularly during the late diastole phase when the ventricles and atria are relaxed.
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The name of the compound PbCl4 is:Lead tetrachlorideLead(II) chlorideLead(IV) chlorideLead chlorideThis question has more then one answer thats why i keep missing it
Answers
The Answer is Lead tetrachloride, PbCl4 is the molecular formula for lead tetrachloride, also known as lead(IV) chloride. It is a yellow, oily liquid that is stable below 0 degrees Celsius and decomposes at 50 degrees Celsius.
It is tetrahedral in structure, with lead as the central atom. The covalent bond length of Pb-Cl is 247 pm, and the bond energy is 243 kJmol. Lead tetrachloride can be synthesised by reacting lead(II) chloride PbCl2 with hydrochloric acid HCl in the presence of chlorine gas (Cl2), yielding chloroplumbic acid H2PbCl6. By adding ammonium chloride, it is converted to the ammonium salt (NH4)2PbCl6 (NH4Cl). Finally, concentrated sulfuric acid H2SO4 is added to the solution to separate out the lead tetrachloride.
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Which set of elements have the most similar chemical properties?
1. Potassium, Calcium, Scandium
2. Chromium, Cobalt, Copper
3. Nitrogen, Oxygen, Fluorine
4. Oxygen, Sulfur, Selenium
Answers
Answer:
4
Explanation:
Oxygen, Sulfur, Selenium
The density of osmium ( the densest metal) is 22.57 g/cm^3. What volume would be occupied by 1.50 kg of osmium.
Answers
Answer:
Density = Mass / Volume
V = 1.00 * 4.00 * 2.50 = 10 cm³
22.57 g/cm³ = Mass / 10 cm³
M = 22.57 g/cm³ * 10 cm³
M = 225.7 g
Answer: The mass of the block of osmium is 225.7 g.
Explanation:
Thanks to:
HomertheGenius
The density of the osmium is 22.57 g/cm^3 the volume would be occupied by 1.50 kg of osmium will be 33.85 ml.
What is density?The density of a substance is the division of mass of the given substance and the volume of the given substance and its unit will be centimeter cube and it cannot be effect by the temperature.
The density can be calculated by the formula
Density = mass of substance / volume of substance in liter
Density = 22.57 g/cm³
mass = 1.50 kg
Substituting the value in the equation,
22.57 g/cm³ = 1.50 kg / volume
Volume = 22.75 g/cm³ × 1.50 kg
volume = 33.85 ml
Therefore, density of the osmium is 22.57 g/cm^3 the volume would be occupied by 1.50 kg of osmium will be 33.85 ml.
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