In general, when would use fittration
Iseperates a mixture? When would
distillation to seperate a mixture?
Answers
(っ◕‿◕)っ Hey There!
Answer ➜ Distillation can separate a liquid from substances dissolved in a liquid.
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Related Questions
Which of the following statement(s) are true about the atoms of any element?
a) The number of protons in an atom of an element is unique to each element.
b) The number of protons and neutrons in an atom of an element is unique to each element
c) A proton in an atom of one element is identical to a proton in an atom of another element.
d) The number of protons in an atom of an element is the same for all elements.
Answers
Answer:
C
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7. The equation for this reaction is shown below.
4CuO(s) + CH4(g) → 4Cu(s) + 2H2O(g) + CO2(g)
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The water and carbon dioxide produced escapes from the test tube.
Use information from the equation to explain why.
Answers
Answer:
because the lighted splint is burnt and the water and carbon dioxide starts to explode
What happens when the two negative ions are brought close together?
Answers
They attract each other to form ionic networks.
a 1/9 inch thick lead sheet is used for protection from medical x-rays. if a single lead atom has a diameter 350 pm , how many atoms thick is the lead sheet?
Answers
To determine how many atoms thick the lead sheet is, we need to calculate the number of atoms that can fit within its thickness.
First, let's convert the thickness of the lead sheet from inches to picometers (pm). Since 1 inch is equal to 25,400,000 pm, a 1/9 inch thick lead sheet would be approximately 2,822,222 pm thick.
Next, we need to find out how many lead atoms can fit within this thickness. Given that a single lead atom has a diameter of 350 pm, we can divide the thickness of the lead sheet by the diameter of a lead atom:
Number of atoms thick = thickness of the lead sheet / diameter of a lead atom
Number of atoms thick = 2,822,222 pm / 350 pm
Calculating this, we find that the lead sheet is approximately 8,064 atoms thick.
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what do lemons, tomatoes, and coffee all have in common chemically?
Answers
Answer:
They all produce H+ ions in solution, making them acids.
explain the three forces at work that hold an atom together
Answers
An atom is held together by three forces: the strong nuclear force, the electromagnetic force, and the weak nuclear force.
The strong nuclear force is the strongest of the three forces and is responsible for binding the protons and neutrons together in the nucleus of an atom. The strong nuclear force is a short-range force that acts only over a very small distance, and it is strong enough to overcome the repulsive forces between the protons, which are positively charged particles.
The electromagnetic force is the second strongest of the three forces, and it is responsible for binding the electrons to the nucleus of an atom. The electromagnetic force is a long-range force that acts over a larger distance than the strong nuclear force, and it is caused by the attraction between opposite charges (positive and negative).
The weak nuclear force is the weakest of the three forces, and it is responsible for certain types of radioactive decay, such as beta decay. The weak nuclear force is a short-range force that acts only over a very small distance, and it is much weaker than the strong nuclear force and the electromagnetic force.
Overall, the three forces at work that hold an atom together are the strong nuclear force, the electromagnetic force, and the weak nuclear force. These forces act at different ranges and with different strengths, but they all play a crucial role in maintaining the stability and integrity of an atom.
Biodiversity can be altered by __________.
Select one:
All of these
a fire in the ecosystem
unexpected changes in the climate of an ecosystem
a flood in the ecosystem
Answers
Why is the earth so round
Answers
Answer:
Cause why not?
Explanation:
Write a short paragraph about how gases are all around you. Provide at least 2 examples
Answers
Answer:fart and carbon are all around is
Explanation:
what is the percent of mercury?
Answers
Answer:
42%
Explanation:
What is salt
Types of salt
Answers
Answer:
Explanation:
Salt is a mineral substance composed primarily of sodium chloride (NaCl). It is commonly used in cooking, food preservation, and as a seasoning. There are several types of salt, including:
Table salt: This is the most common type of salt, which is refined and processed to remove impurities. It is typically iodized to prevent iodine deficiency.
Sea salt: This is made by evaporating seawater and contains trace minerals, giving it a slightly different taste than table salt.
Himalayan salt: This is a type of rock salt that is mined from the Himalayan Mountains. It is known for its pink color and contains trace minerals.
Kosher salt: This is a coarse-grained salt that is commonly used in kosher cooking. It has a larger crystal size than table salt and is less dense.
Pickling salt: This is a fine-grained salt that is used for pickling and canning. It does not contain any additives like iodine or anti-caking agents.
What will happen if the cloud does not have enough mass?
A core will form.
A star will not form.
A protostar will form.
A nebula will not form.
Answers
Which element or compound has lost electrons in this oxidation-reduction reaction? 4li 2coo → 2co 2li2o a. coo b. li2o c. li d. co e. o
Answers
C. Li has lost electrons in this oxidation-reduction reaction
Such a type of chemical reaction involving electron transfer between two species is known as oxidation-reduction or redox reaction.
Redox reaction is the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.
For this reaction:
On the reactant side:
Oxidation state of oxygen, cobalt, lithium = -2 ,+2, 0
While on the product side of reaction:
Oxidation state of cobalt, oxygen, lithium = 0, -2, +1
Here, an oxidation reaction takes place because the oxidation state of lithium is increased. While the oxidation state of cobalt is reducing, it is gaining electrons and undergoes a reduction reaction.
So, Option C (Li) is correct.
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The chemical equation below shows the combustion of methane (ch4). ch4 2o2 right arrow. co2 2h2o the molar mass of oxygen gas (o2) is 32.00 g/mol. the molar mass of carbon dioxide (co2) is 44.01 g/mol. what mass of co2, in grams, will form when 8.94 g o2 completely react? 3.25 grams 6.15 grams 13.0 grams 53.0 grams
Answers
6.15 grams of carbon dioxide is form when 8.94 g of oxygen is completely react.
How we calculate mass from moles?Mass of any substance will be calculated from moles as :
n = W/M, where
W = required mass
M = molar mass
Given combustion reaction is:
CH₄ + 2O₂ → CO₂ + 2H₂O
Given mass of O₂ = 8.94 g
Molar mass of O₂ = 32.00 g/mole
Moles of O₂ = 8.94 / 32 = 0.279 mole
From the stoichiometry of the reaction, it is clear that:
2 moles of O₂ = produce 1 mole of CO₂
0.279 moles of O₂ = produce 1/2×0.279 = 0.139 moles of CO₂
Molar mass of CO₂ = 44 g/mole
Required mass of CO₂ will be calculated as:
W = n × M
W = 0.139 × 44 = 6.15 grams
Hence, option (2) is correct i.e. 6.15 grams.
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Answer:
Option 2/ B. 6.15 grams on edge.
Explanation:
S/o to the person above me, got it because of them.
what are three events that occur when the Sun, Moon, and Earth line up in a row?
I will brainleist
Answers
Answer:
The three events that occur when the Sun, Moon, and Earth line up in a row are
SYZYGYNeap Tide.Spring Tide.nitrogen monoxide and oxygen react to form nitrogen dioxide. if 5.6 moles of no react with 3.1 moles of o 2, how many moles of the reactant in excess will remain after the reaction? (assume 100% yield.)
Answers
0.3 moles of Oxygen is excess reactant (reagent) when yield is 100% .
NO =5.6 moles
O2= 3.1 moles
2NO + O2 --> 2NO2 the chemical reaction.
the ratio of NO and O2 is 2:1
therefore for 5.6 moles of NO, 2.8 moles of Oxygen(O2) is required. So 3.1moles - 2.8 moles = 0.3 moles
The reactant in a chemical reaction that is present in a quantity that is larger than what is required to fully react with the limiting yield is known as the excess reactant. The substance(s) still present after a chemical reaction has reached equilibrium in yield are the reactant(s). Subtract the mass of excess reagent eaten from the total mass of excess reagent provided to determine the quantity of yield that is still present. Reactants in a chemical reaction are referred to as excess reagents if they are still present after the reaction is complete.
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the third law of thermodynamics describes the entropy of a: select the correct answer below: solid liquid gas all of the above
Answers
The third law of thermodynamics describes the entropy of a: solid.
The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.
The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.
In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.
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Find the volume in Litre of 40kg of ccl4 whose density is 1.60g km3
Answers
Answer:
i’m pretty sure it’s 560 sorry if its not
How many 4d electrons would be predicted in the ground state for the following elements?a. zirconiumb. cadmiumc. iridiumd. iron
Answers
In order to answer the question first we must write the atomic number of each element:
Zirconium (Zr): 40
Cadmium (Cd): 48
Iridium (Ir): 77
Iron (Fe): 26
Then, we have to complete the distribution of electrons in each orbital for each atom:
The first 4 levels have the following distribution:
Level1: 1s
Number of electrones: 2
Level 2: 2s, 2p
Number of electrones 8 (2 in the s orbital and 6 in the p orbitals).
Level3: 3s, 3p, 3d
Number of electrones 18 (2 in the s orbital, 6 in the p orbital and 10 in the d orbitals)
Level 4: 4s, 4p, 4d, 4f
Number of electrones 32 (2 in the s orbital, 6 in the p orbitals, 10 in the d orbitals and 14 in the f orbitals)
The order in which the orbitlas are completed depends on the energy of each level. For example the 4s orbitals will be completed before the 3d orbitals because their energy is lower.
The order is as follows:
1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p...
Now, knowing the atomic number we can answer the question:
For Zirconium (total 40 electrones):
\(1s^2,2s^2,2p^6,3s^2,3p^6,4s^2,3d^{10},4p^6,5s^2,4d^2\)2 electrones are predicted in the 4d orbital
For Cadmium (total 48 electrones):
\(1s^2,2s^2,2p^6,3s^2,3p^6,4s^2,3d^{10},4p^6,5s^2,4d^{10}^{}\)10 electrones are predicted in the 4d orbital
For iridium, as it has an atomic number higher than Cadmium we can predict tha it also complets the 4d orbital, then it has also 10 electrones in it.
For iron (total 26 electrones)
\(1s^2,2s^2,2p^6,3s^2,3p^64s^2,3d^6\)Iron has no electrones in the 4d orbitals
Describe in words the chemical reaction represented by the
following chemical equation: 2N02 + 202 + N2
Answers
Answer:
2 nitrogen and oxygen+ nitrogen 2
Describe two types of nuclear reactions other than radioactive decay
Answers
Nuclear fusion: this is the joining of two small atomic nuclei into one nucleus. Nuclear fission: this is the splitting of one large atomic nucleus into smaller fragments.
what does combustion mean
Answers
Answer:
combustion is a high-temperature exothermic redox chemical reaction between a fuel and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke.
What are at least 3 places carbon can be found?
Answers
Answer:
Carbon can be found in the ocean, rocks, and the atmosphere around us.
In a Covalent bond which statement is true
Answers
Answer:
correct is A, but it isn't quite right. Only when the electronegativity values of the two atoms are the same will the bond be 100% covalent.
why do cows fart unhealthy gasses?
Answers
Answer: Cow fart unhealthy because
they spent there days for people can
make milk.
Consider the equations below. (1) Ca(s) CO2(g) 1 2 O2(g) → CaCO3(s) (2) 2Ca(s) O2(g) → 2CaO(s) How should you manipulate these equations so that they produce the equation below when added? Check all that apply. CaO(s) CO2(g) → CaCO3(s) reverse the direction of equation (2) multiply equation (1) by 3 multiply equation (2) by 1/2.
Answers
The final equation is obtained by reversing equation 2 and multiplying it by 1/2. Thus, option A and C are correct.
The given equations are:
\(\rm Ca\;+\;CO_2\;+\;1/2\;O_2\;\rightarrow\;CaCO_3\)
\(\rm 2\;Ca\;+\;O_2\;\rightarrow\;2\;CaO\)
The final equation to be obtained are:
\(\rm CaO\;+\;CO_2\;\rightarrow\;CaCO_3\)
Computation for the final equationThe final reaction is obtained with the CaO as the product. The CaO as product is obtained by reversing equation 2.
The half of equation 2 will give the final equation.
Thus, the final equation is obtained by reversing equation 2 and multiplying it by 1/2. Thus, option A and C are correct.
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Which of the following is an example of a chemical change? A. Boiling water B. Burning paper C. Dissolving sugar in water D. Melting gold
Answers
Answer:
burning paper
Explanation:
all the other choices dont actually affet the item itself in a chemical way only physically. Any time a substance is burned it causes combustion therefor a chemical reaction takes place.
please answer this fast
Answers
What is the test for CO2?
One common test for carbon dioxide (CO2) is the limewater test. Here's how it works:
Add a small amount of limewater (a solution of calcium hydroxide in water) to a clear container.
Blow into the container, creating bubbles in the limewater.
Observe the limewater. If carbon dioxide is present, it will react with the calcium hydroxide to form calcium carbonate, which will make the limewater turn cloudy or milky.
This test is often used to detect the presence of carbon dioxide in the breath of a person, as well as in various chemical reactions where carbon dioxide may be produced or consumed.
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Key computer issues addressed by the bureau of consumer protection (bcp) include all of the following except _____
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All of the following are significant computer-related concerns that the Bureau of Consumer Protection (BCP) addresses, with the exception of how to increase the number of "cookies".
What is a consumer ?
Consumers are those who buy products for their own needs and utilise or consume them.
Product liability, privacy rights, unfair business practises, fraud, misrepresentation, and other consumer/company interactions are only a few of the many themes covered by consumer protection. Although a customer cannot resell the good, product, or service, he or she may use it to support himself or herself and engage in self-employment.
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Will acetone be completely deprotonated by potassium tert-butoxide?
Answers
Acetone has a slightly acidic hydrogen atom attached to the carbonyl group. Potassium tert-butoxide is a strong base and can deprotonate the hydrogen atom from acetone, resulting in the formation of the enolate anion.
No, acetone will not be completely deprotonated by potassium tert-butoxide. The reason is that acetone is a relatively weak acid with a pKa value around 20, while potassium tert-butoxide is a strong base.
However, the basicity of potassium tert-butoxide is not strong enough to completely deprotonate acetone. There will be an equilibrium between the protonated and deprotonated forms of acetone, but the majority will remain protonated.
Therefore, it is likely that acetone will be completely deprotonated by potassium tert-butoxide under appropriate reaction conditions.
Acetone will not be completely deprotonated by potassium tert-butoxide. The reason is that acetone is a relatively weak acid with a pKa value around 20, while potassium tert-butoxide is a strong base.
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