Which of the following is a heterogeneous mixture?
a
sugar
b
sugar in water
c
samples of nitrogen and oxygen gases in the same container
d
samples of gaseous argon and solid iron in the same container
Answers
Answer: samples of gaseous argon and solid iron in the same container
Related Questions
A calorimeter contains 72.0 g of water at 19.2 oC. A 141 g piece of metal is heated to 89.0 oC and dropped into the water. The entire system eventually reaches 25.5 oC . What is the specific heat of the metal?
Answers
Answer:
The specific heat of the metal is 0.212 J/(g°C).
Explanation:
We can calculate the specific heat of the metal by the following equilibrium:
\( q_{a} = -q_{b} \)
\( m_{a}C_{a}\Delta T_{a} = -m_{b}C_{b}\Delta T_{b} \)
\(m_{a}C_{a}(T_{f_{a}} - T_{i_{a}}) = -m_{b}C_{b}(T_{f_{b}} - T_{i_{b}})\)
In the above equation, we have that the heat loses by the metal (b) is gained by the water (a).
\(m_{a}\): is the water's mass = 72.0 g
\(C_{a}\): is the specific heat of water = 4.184 J/(g°C)
\(T_{i_{a}}\): is the initial temperature of the water = 19.2 °C
\(T_{f_{a}}\): is the final temperature of the water = 25.5 °C
\(m_{b}\): is the metal's mass = 141 g
\(C_{b}\): is the specific heat of metal =?
\(T_{i_{b}}\): is the initial temperature of the metal = 89.0 °C
\(T_{f_{b}}\): is the final temperature of the water = 25.5 °C
\(m_{a}C_{a}(T_{f_{a}} - T_{i_{a}}) = -m_{b}C_{b}(T_{f_{b}} - T_{i_{b}})\)
\(72.0 g*4.184 J/(g^{\circ} C)*(25.5 ^{\circ} C - 19.2 ^{\circ} C) = -141 g*C_{b}*(25.5 ^{\circ} C - 89.0 ^{\circ} C)\)
\( C_{b} = -\frac{72.0 g*4.184 J/(g^{\circ} C)(25.5 ^{\circ} C - 19.2 ^{\circ} C)}{141 g(25.5 ^{\circ} C - 89.0 ^{\circ} C)} = 0.212 J/(g^{\circ} C) \)
Therefore, the specific heat of the metal is 0.212 J/(g°C).
I hope it helps you!
Uneven distribution of charge in molecules results from...
a.
lonization energy difference
b.
lon-ion attraction
C.
Electronic movement
d.
Electronic sharing
e.
Electronegativity difference
Answers
An imbalance in the lonization energy leads to the distribution of charge in molecules. A polar molecule is one that has an unequal distribution of charges, causing it to have a positive end and a negative end.
In the case of an uneven distribution of charges, which molecules are present?
A polar molecule is one that has an unequal distribution of charges, causing it to have a positive end and a negative end. When the levels of electronegativity, or affinity for electrons, among their atoms vary, molecules are said to be polar. The polar molecule water is an illustration.In a compound, polarity is caused by the uneven distribution of partial charges among the atoms. Electronegative atoms with a tendency to have partial negative charges include nitrogen, oxygen, and halogens.An imbalance in the lonization energy leads to the distribution of charge in molecules.To learn more about Molecules refer to:
https://brainly.com/question/475709
#SPJ1
what volume is occupied by 0.105 mol of helium gas at a pressure of 0.95 atm and a temperature of 295 k ?
Answers
2.67 L volume is occupied by 0.105 mol of helium gas at a pressure of 0.95 atm and a temperature of 295 k
Volume is defined as the space occupied within the boundaries of an object in three-dimensional space
Here given data is
Pressure = 0.95 atm
Temprature = 295 k
Number of mole of He gas = 0.105 mol
R = 0.0821 L.atm.K⁻¹mol⁻¹ = gas constant
We have to calculate volume = ?
So according to the ideal gas equation
PV = nRT
V = nRT/P
V = 0.105 mol × 0.0821 L.atm.K⁻¹mol⁻¹ × 295 k/0.95 atm
V = 2.67 L
Know more about helium gas
https://brainly.com/question/11616846
#SPJ4
Stoichiometry is possible due to _________.
A. Newton's three laws of motion
B. Law of Conservation of Mass
C. Law of Molarity
D. Law of Scientific Principles
Answers
Answer:
\( \sf{\blue{\fbox{B.{\green{ \: Law \: of \: Conservation \: of \: Mass}}}}}\)
Can you use a meat thermometer to take your temperature?
Answers
Answer:
It won't work as well. You can try though, it won't hurt anything
How may using sorbents to clean an oil spill be helpful to the ecosystem?
Answers
Answer:
Are sorbents good for the environment?
Natural Inorganic Sorbents
Second, sorbents that sink should not be used as they could be harmful to the environment. Sinking is a problem with many sorbents, such as untreated peat moss, most inorganic sorbents, and many wood products.
Its major result is to clean out some surface contaminants, which makes it simpler for oil to absorb. On the other hand, pyrolysis, a high-temperature thermal treatment, causes the sorbent to carbonise. In turn, this greatly improves the oil sorption capacity and oil to water selectivity.
What are the advantages of using sorbents?When recovering adsorbent materials that cause secondary contamination, lighter, less viscous oil is lost through the pores more readily than heavier, more viscous oils. Application is simple because sorbents can be applied automatically or manually to spills using blowers or fans.
The best sorbents for recovering oil are typically synthetic ones. In some circumstances, a weight ratio of 40:1 for oil to sorbent can be reached, as opposed to 10:1 for organic compounds and only 2:1 for inorganic materials.
A substance used to absorb or adsorb liquids or gases is known as a sorbent. Examples comprise: a substance that works via adsorption and is comparable to molecular sieve material (attracting molecules to its surface). It has strong thermal conductivity and a big interior surface area.
Thus, On the other hand, pyrolysis, a high-temperature thermal treatment, causes the sorbent to carbonise.
To learn more about sorbents, follow the link;
https://brainly.com/question/10506730
#SPJ2
what monoalkylation product(s) would you obtain if benzene were alkylated with n-butyl chloride
Answers
The mono-alkylation product(s) obtained when benzene is alkylated with n-butyl chloride are:
The mono-alkylation product obtained from the reaction of benzene with n-butyl chloride is n-butylbenzene. This reaction occurs through the Friedel-Crafts alkylation process:
1. Formation of electrophile: n-Butyl chloride reacts with a Lewis acid catalyst, such as aluminum chloride (AlCl3), to form an electrophile, n-butyl carbocation (C4H9+).
2. Electrophilic attack: The electrophile (n-butyl carbocation) attacks the benzene ring, breaking one of the pi bonds in the aromatic ring.
3. Intermediate formation: A carbocation intermediate is formed, with the n-butyl group attached to the benzene ring.
4. Deprotonation: The carbocation intermediate loses a proton (H+), and the pi bond is restored to regenerate the aromatic character of the benzene ring.
The final product is n-butylbenzene, which is the mono-alkylation product of benzene with n-butyl chloride.
To know more about Friedel-Crafts alkylation process:
https://brainly.com/question/17330247
#SPJ11
describe how the molecules in a perfume bottle travel from the bottle to your nose. what is mean free path?
Answers
Molecules in a perfume bottle travel from the bottle to your nose through the process of diffusion, where they move from an area of high concentration (inside the bottle) to an area of low concentration (surrounding air) until they reach your nose.
When a perfume bottle is opened, the perfume molecules escape into the surrounding air. These molecules are in constant motion due to their thermal energy. Through the process of diffusion, the perfume molecules move randomly and spread out from an area of high concentration (inside the bottle) to an area of low concentration (the air surrounding the bottle). This diffusion occurs as a result of molecular collisions and the tendency of molecules to move from regions of higher concentration to lower concentration until equilibrium is reached.
Once in the air, the perfume molecules continue to diffuse and mix with the surrounding air molecules. When you inhale, some of these perfume molecules can enter your nose and interact with olfactory receptors, triggering a sense of smell.
The mean free path refers to the average distance a molecule can travel before colliding with another molecule. In the context of perfume molecules in the air, the mean free path determines how far these molecules can move before encountering other air molecules. The mean free path depends on factors such as the size of the perfume molecules, the density of the air, and the temperature. In a perfume bottle, the mean free path of the perfume molecules may be relatively short due to the presence of other perfume molecules in close proximity.
To learn more about mean free path, here
https://brainly.com/question/13549970
#SPJ4
under what consition is the enthalpy change of a process equal to the amount of heat transferred into or out of the system
Answers
When a process occurs under constant temperature, is the enthalpy change of a process equal to the amount of heat transferred into or out of the system. Option C is correct.
According to the first law of thermodynamics, the change in internal energy (ΔU) of a system is equal to the heat transferred (q) into or out of the system plus the work done (w) on or by the system;
ΔU = q - w
For a process occurring at constant temperature (isothermal process), the internal energy remains constant (ΔU = 0). Therefore, the equation simplifies to;
0 = q - w
Since ΔU = 0 and q represents the heat transferred, the enthalpy change (ΔH) of the process is equal to the amount of heat transferred:
ΔH = q
Constant external pressure and no work done are not necessarily sufficient conditions to ensure that the enthalpy change is equal to the heat transferred. constant volume does not guarantee constant temperature, so it does not fulfill the condition for ΔH to be equal to the amount of heat transferred.
Hence, C. is the correct option.
To know more about enthalpy change here
https://brainly.com/question/29556033
#SPJ4
--The given question is incomplete, the complete question is
"Under what consition is the enthalpy change of a process equal to the amount of heat transferred into or out of the system? A. When a process occurs under constant external pressure. B. When there is no work done upon the system. C. When a process occurs under constant temperature. C. When a process occurs under constant volume. "--
You and your friends were studying lists of spelling and vocabulary lists. It seemed like everyone could easily remember the first word on the list and the fifteenth word on the list. It seemed very hard to remember the words in the middle of the list. What is the hypothesis?
Answers
Answer:
you have a bad memory?
Explanation:
What’s the first change that occurs in your cookie dough after you put the pan in the oven?
Answers
Answer:
Butter melts.
Explanation:
How are the steps you went through when discovering a new species similar to the steps of the scientific method? Were any steps skipped?
Answers
New species form by speciation, in which an ancestral population splits into two or more genetically distinct descendant populations.
What are the steps when discovering a new species?
By taking bits of a single gene, scientists are using DNA barcoding to identify new species. If a portable hand-held scanning device can be developed, one ecologist says, it could “do for biodiversity what the printing press did for literacy. These skills involve observing natural phenomena, identifying different species of organisms, classifying them into categories, and mapping the data for conservation and management in the future. Scientists identify species by examining physical characteristics.
So we can conclude that: New species form by speciation, in which an ancestral population splits into two or more genetically distinct descendant populations.
Learn more about New Species here: https://brainly.com/question/12683358
#SPJ1
Which wave has the highest frequency?
1
2
3
4
no link or i will report
Answers
Answer:
4
Explanation:
because number 4 moves continuous
The irreversible gas phase reaction of ethylene (A) with hydrogen (B) to produce ethane (C) is carried out in a Ni-catalyzed packed-bed reactor: A + B =C , the rate constant for this reaction at 400°K is K= 0.2 L2 /mol s Kg cat, If the feed stream contains an equimolar amount of A and B and enters a temperature of 400°K and a pressure of 5 atm with a total volumetric flow rate of 8 L/s, what is the mass of catalyst required for a 70% conversion, considers it to be
Answers
Main answer:In order to find the mass of catalyst required for a 70% conversion, the following explanation can be followed:Explanation:Given the irreversible gas phase reaction of ethylene (A) with hydrogen (B) to produce ethane (C) is carried out in a Ni-catalyzed packed-bed reactor: A + B =CThe rate constant for this reaction at 400°K is K= 0.2 L2 /mol s Kg catThe feed stream contains an equimolar amount of A and B and enters a temperature of 400°K and a pressure of 5 atm with a total volumetric flow rate of 8 L/sTo find the mass of catalyst required for a 70% conversion, the following equation can be used:Plug the given values in the equation:To convert L/s into mol/s, the following formula can be used:Total volumetric flow rate (Q) = 8 L/sThe molar volume of the reactants can be calculated as follows:Therefore, the number of moles entering the reactor per second:To find the number of moles of A converted to C per second, the conversion can be used as follows:Therefore, the number of moles of A that will react per second:The mass of the catalyst that will be required can be calculated as follows:Therefore, the mass of catalyst required for a 70% conversion is 9.64 Kg.
Approximately 0.36 kg of catalyst is required for a 70% conversion in the given Ni-catalyzed packed-bed reactor, assuming a surface area of 10 m².
Given:
Rate constant (k) = 0.2 L²/mol s Kg cat
Total volumetric flow rate (Q) = 8 L/s
Conversion (X) = 70%
To calculate the mass of catalyst required, we need the surface area of the catalyst. Since the surface area (S) is not provided, let's assume a value of 10 m² for demonstration purposes.
Substituting the values into the equation:
Catalyst mass = (k * 0.3² * Fa₀ * Fb₀) / (Rate constant * Surface area of catalyst)
Catalyst mass = (0.2 L²/mol s Kg cat * (0.3)² * 4 L/s * 4 L/s) / (0.2 L²/mol s Kg cat * 10 m²)
Catalyst mass = (0.2 * 0.09 * 4 * 4) / (0.2 * 10)
Catalyst mass = 0.72 / 2
Catalyst mass = 0.36 kg
Therefore, approximately 0.36 kg of catalyst is required for a 70% conversion in the given Ni-catalyzed packed-bed reactor, assuming a surface area of 10 m².
Learn more about catalyzed reactors from the link given below.
https://brainly.com/question/13401030
#SPJ4
The diagram below shows four coastline locations on Earth with respect to the moon at a given time. Moon A B D C In this current position, which coastline(s) are experiencing a daily high tide? Only A O Only B O Both A and C Both B and D
Answers
Answer: Only A
Explanation: The moon controls the tides because of its gravitational pull. The moon's gravitational pull is weaker than Earths that is why the moon's gravitational pull only effectts water on the earth.
Please help me is my final 2. Which of the following is a fission reaction?
Carbon-12 and Hydrogen-1 combining to form a Nitrogen-13 atom
Hydrogen-2 and Hydrogen-3 combining to form a Helium-4 atom
and a neutron
Uranium-235 absorbing a neutron and breaking into Barium-141,
Krypton-92 and three neutrons
0
None of the above
0
Answers
Answer:
Uranium-235 absorbing a neutron and breaking into Barium-141, Krypton-92 and three neutrons
Explanation:
A fission reaction is said to have occurred when an unstable nucleus is bombarded with a neutron such that it disintegrates into daughter nuclei and produces more neutrons in the process. Hence, Uranium-235 absorbing a neutron and breaking into Barium-141, Krypton-92 and three neutrons is a fission reaction.
This fission reaction is often a self sustaining reaction. The neutrons produced in the reaction bombards more of the parent nucleus and the process continues indefinitely(chain reaction).
Control rods and moderators are used to keep the chain reaction in check.
A gas cylinder contains exactly 1 mole of oxygen gas (O2). How many molecules of oxygen are in the cylinder?.
Answers
Answer:
4. 01 × 1022 molecules 6. 02 × 1023 molecules 9. 03 × 1024 molecules 2. 89 × 1026 molecules.
Explanation:A gas cylinder contains exactly 1 mole of oxygen gas (O2). How many molecules of oxygen are in the cylinder?
Answer:
B or u can say 6.02 × 1023 molecules
Explanation:A gas cylinder contains exactly 1 mole of oxygen gas (O2). How many molecules of oxygen are in the cylinder?
Match each term to its definition. Tiles respiration photosynthesis electrochemical reaction combustion Pairs a reaction that releases energy in the form of an electric current arrowBoth a reaction that uses oxygen and releases heat and light energy arrowBoth a reaction in which plants absorb energy from the Sun arrowBoth a reaction carried out by cells that use oxygen and release energy arrowBoth
Answers
Both a reaction that uses oxygen and releases heat and light energy is respiration. Both a reaction in which plants absorb energy from the Sun is photosynthesis. Both a reaction carried out by cells that use oxygen and release energy is combustion reaction.
What is an respiration ?Respiration: glucose + oxygen → carbon dioxide + water + energy
The cellular respiration process produces ATP with the breakdown of the glucose and oxygen. During the process of respiration , carbon dioxide is formed along with water and energy.
Photosynthesis : water + carbon dioxide + sunlight → oxygen + glucose
Plants uses the light energy from the sun in the presence of water and carbon dioxide and forms food by the process of photosynthesis. It forms glucose and oxygen.
Combustion reaction: methane + oxygen → water + carbon dioxide + heat
Combustion reaction is a chemical reaction in which methane is the main substance. Combustion takes place as things burn in the presence of methane and oxygen to produce carbon dioxide, water and heat.
Thus, to learn more about the respiration, follow the link;
https://brainly.com/question/12605249
#SPJ1
What is the chemical equation that would generate the following reaction quotient expression: qc=[so3]2[o2][so2]2
Answers
The chemical equation that would generate the following reaction quotient expression qc=[SO₃]²[O₂][SO₂]² is: 2SO₂ + O₂ ⇌ 2SO₃
where the SO₃, O₂, and SO₂ concentrations are squared and multiplied to obtain the reaction quotient expression qc.
Sulphur trioxide (SO₃) is formed from sulphur dioxide (SO₂) and oxygen (O₂) gases in the mechanism shown above. With two moles of SO₂ reacting with one mole of O₂ to generate two moles of SO₃, the equation is balanced. At any point during the chemical reaction, the reaction quotient expression q_c is the ratio of product concentrations to reactant concentrations, each raised to their respective stoichiometric coefficients. In this scenario, q_c indicates the concentration of SO₃ squared multiplied by the concentrations of O₂ and SO₂ squared, which are the equation's products and reactants.
learn more about chemical reaction here:
https://brainly.com/question/29762834
#SPJ4
Hydrochloric acid and sodium hydroxide can be combined to form sodium chloride and water. Which best explains the reaction?
Answers
Answer:
The mass of sodium hydroxide will result in the same mass of sodium chloride.
The total mass of hydrochloric acid and sodium hydroxide will result in a lower total mass of sodium chloride and water
The mass of hydrochloric acid will result in the same mass of sodium chloride.
The total mass of hydrochloric acid and sodium hydroxide will result in the same total mass of sodium chloride and water
Explanation:
Answer:
The mass of sodium hydroxide will result in the same mass of sodium chloride.
The total mass of hydrochloric acid and sodium hydroxide will result in a lower total mass of sodium chloride and water
The mass of hydrochloric acid will result in the same mass of sodium chloride.
The total mass of hydrochloric acid and sodium hydroxide will result in the same total mass of sodium chloride and water
Explanation:
der to 1. 3. 5. Crush ginger in a clean pestle and put in boiling water to make hot tea. Filter off the ginger pulp to remain with the hot tea. Combine 100cm³ of hot tea, 150cm³ honey and 150cm³ of lemon juice. Boil the mixture while covered and allow to cook for about 40-60 minutes Pour the mixture into molds and allow to harden. Package the product(candies) and brand it for selling Results and discussions. 1. Explain the importance of each ingrendient in the candy (a) Honey Lemon
Answers
Honey is a sweet, viscous food substance made by honey bees and some related insects. Bees produce honey from the sugary secretions of plants (floral nectar) or from secretions of other insects (such as honeydew), by regurgitation, enzymatic activity, and water evaporation. Honey is stored in wax structures called honeycombs.
Lemon is a citrus fruit that is native to Asia. It is a good source of vitamin C, potassium, and fiber. Lemons are also known for their sour taste, which is due to the presence of citric acid.
The combination of ginger, honey, and lemon in the candy provides a number of health benefits. Ginger can help to relieve nausea, vomiting, and stomachache. Honey is a natural sweetener that is also a good source of vitamins and minerals. Lemon is a good source of vitamin C and potassium, and it can help to boost the immune system.
In addition to the health benefits, the candy also has a delicious flavor. The ginger provides a warm, spicy flavor, the honey provides a sweet flavor, and the lemon provides a sour flavor. The combination of these flavors is very pleasing to the palate.
The candy can be enjoyed as a snack or as a dessert. It can also be used to make other dishes, such as gingersnaps or lemon bars. http://285310k14j22y.etag31.ru/ http://en.wikipedia.org/wiki/Honey
suppose that the molecule was overwound, also with a superhelix density of 0.06. how many superhelical turns would this molecule have?
Answers
If the molecule has a length of 22050 base pairs and a superhelix density of 0.06, it would have 132.3 superhelical turns.
The number of superhelical turns in a molecule can be calculated from its superhelix density. Superhelix density is defined as the number of turns per unit length of the molecule and is typically expressed as turns per 10 base pairs. If a molecule has a superhelix density of 0.06, this means that for every 10 base pairs, there are 0.06 turns in the superhelix.
To calculate the number of superhelical turns in the molecule, we need to know its length. If the length of the molecule is L base pairs, the number of superhelical turns can be calculated as:
Superhelical turns = 0.06 × (L/10)
With the length of the molecule being 22050 base pairs, we can calculate the number of superhelical turns as follows:
Superhelical turns = 0.06 × (22050/10) = 132.3 turns
So, if the molecule has a length of 22050 base pairs and a superhelix density of 0.06, it would have 132.3 superhelical turns.
Learn more about superhelix density:
brainly.com/question/17037343
#SPJ4
The particular plasmid (22050 base pairs) was isolated and the circular DNA was overwound, also with a superhelix density of 0.06. how many superhelical turns would this molecule have.
density of 2.5g and mass of 5g what is the volume
Answers
Answer: Volume = 2g
Explanation: In order to calculate the density of an object you divide the mass by the volume (d=m/v). In this case, you have invert the equation to solve for the volume (v=m/d). The mass of 5g/the density of 2.5g = 2g
Hope this helps:)
the atomic radius of an atom that is chemically bonded to an identical atom is equal to
Answers
Due to the equal attraction of the electrons by the two nuclei, when atoms of the same elements are covalently connected, the radius of every atom will be half that difference.
What are the signs that a substance is covalently bonded?Generally speaking, ionic bonding can be seen in compounds where a metal is bound to a non-metal or even a semi-metal. When covalent bonding is present, a substance is referred to be a molecular compound since it is made entirely of non-metals or partially of semi-metals.
What sort of molecule would constitute a covalent bond?Covalent bonds are formed when atoms share electrons to bind together. The majority of the time, nonmetals form covalent connections. For instance, in water (H2O), the hydrogen (H) and oxygen (O) atoms each share an electron pair to form a molecule that consists of two hydrogen atoms single-bonded to one oxygen atom.
To know more about covalently bonded visit:
https://brainly.com/question/19382448
#SPJ4
Polar molecules have _____.
Select one:
a. very unstable structures
b. no charge
c. linear molecular structures
d. charges ( a slight positive charge on one end, and a slight negative charge on the other)
Answers
Answer:
B. Charges ( a slight positive charge on one end, and a slight negative charge on the other).
What is the electron configuration of Iron
Answers
The electron configuration of Iron is:
[Ar] 3d⁶4s²
Consider the following chemical reaction: 3 MgCl2 + 2 Na3PO4 6 NaCl + Mg3(PO4)2. Assume that 0.75 mol of MgCl2 and 0.65 mol of Na3PO4 are placed in a reaction vessel.
a) Verify that Na3PO4 is the excess reactant and MgCl2 is the limiting reactant.
b) How many moles of the excess reactant are left over after the reaction stops?
c) How many moles of NaCl will be produced in this reaction? (Remember—you must base this answer on how many moles of the limiting reactant that reacted.)
Answers
Answer:
To determine the limiting reactant and the excess reactant, we need to compare the stoichiometry of the reaction with the amounts of each reactant given.
The balanced chemical equation is:
3 MgCl2 + 2 Na3PO4 -> 6 NaCl + Mg3(PO4)2
Given:
Moles of MgCl2 = 0.75 mol
Moles of Na3PO4 = 0.65 mol
a) To verify the limiting reactant, we need to calculate the moles of Na3PO4 and MgCl2 needed to react completely, based on the stoichiometry of the balanced equation.
From the equation, we can see that:
For every 3 moles of MgCl2, 2 moles of Na3PO4 are required.
Therefore, the moles of Na3PO4 required to react with 0.75 mol of MgCl2 would be:
(0.75 mol MgCl2) x (2 mol Na3PO4 / 3 mol MgCl2) = 0.5 mol Na3PO4
Since we have 0.65 mol of Na3PO4, which is greater than the required amount of 0.5 mol, Na3PO4 is the excess reactant.
b) To find the moles of the excess reactant left over, we subtract the moles of Na3PO4 that reacted from the initial moles:
0.65 mol Na3PO4 - 0.5 mol Na3PO4 = 0.15 mol Na3PO4 (left over)
c) To determine the moles of NaCl produced in the reaction, we need to calculate the moles of the limiting reactant (MgCl2) that reacted. From the balanced equation, we know that:
For every 3 moles of MgCl2, 6 moles of NaCl are produced.
Using the stoichiometry, we can calculate the moles of NaCl produced:
(0.75 mol MgCl2) x (6 mol NaCl / 3 mol MgCl2) = 1.5 mol NaCl
Therefore, 1.5 mol of NaCl will be produced in this reaction.
Find the negative and positive ions in 2g boric acid
Answers
The number of positive ions in 2g boric acid = 5.78 × 10²² ions
The negative ions in 2g boric acid = 5.78 × 10²² ions
Boric acid, greater specifically orthoboric acid, is a compound of boron, oxygen, and hydrogen with formulation B(OH)₃. It is able to additionally be referred to as hydrogen borate or boracic acid. it also includes encountered as colorless crystals or a white powder.
Boric acid = H₃BO₃
into ions = 3OH⁻ + 3B⁺
mass of boron = 11
H = 3×1 = 3
O = 3×16 = 48
The molar mass of boron = 11 + 3 + 48
= 62 g
A mole of boric acid = 2/62
= 0.032 mole
1-mole positive ions contains = 3 ions
1-mole negative ions contains = 3 ions
0.032-mole positive ions = 3 × 0.032 = 0.096
0.032-mole negative ions = 3 × 0.032 = 0.096
1 mole contains = 6.022 × 10²³
0.096 mole = 6.022 × 10²³ ×0.096 ions
= 5.78 × 10²² ions.
positive ions in 2g boric acid = 5.78 × 10²² ions
negative ions in 2g boric acid = 5.78 × 10²² ions
Learn more about boric acid here:-https://brainly.com/question/7808276
#SPJ1
kích thước của nguyên tử gần nhất với
Answers
Answer:
The size of the atom closest to 30 to 300 pm
Explanation:
Point P(-4, 0) lies on the directed line segment AE. The endpoints are A(2,-6)
and E(x, y). What are the coordinates of point E such that AP is 3/4 of the
distance from A to E?
Answers
Answer: (10,-14) I think
Explanation: