10.which of the following compounds does not give a tertiary alcohol upon reaction with methylmagnesium bromide? a. 3-methylpentanal b. ethyl benzoate c. 4,4-dimethylcyclohexanone d. 4-heptanone
Answers
4-heptanone compound does not give a tertiary alcohol upon reaction with methylmagnesium bromide
An chemical molecule having the formula (CH 3 CH 2 CH 2) 2 CO is known as 4-heptanone or heptan-4-one. It is an invisible liquid. Iron (II) butyrate is pyrolyzed in the process of making it through the process of ketonization. The two methylene protons at position 4 have been swapped out for an oxo group in 4-heptanone, a dialkyl ketone. It serves as a rat metabolite, a human urine metabolite, a human xenobiotic metabolite, and a biomarker. It comes from a heptane hydride. When 4-heptanone reacts with methylmagnesium bromide, it does not produce a tertiary alcohol because the Grignard Reaction involves adding an organomagnesium halide (Grignard reagent) to an aldehyde or ketone to produce a tertiary or secondary alcohol, depending on the case.
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Related Questions
PLEASEEEE HELP I WILL GIVE 30 POINTS Cobalt
Calcium
Platinum
Phosphorus
Part II:
Look at a periodic table, and in the space below type the missing chemical or symbol. Then answer the question below.
Iron:
Co:
Na:
Tin:
P:
F:
Fe:
Magnesium:
Uranium:
Ca:
Carbon:
Lead:
Ag:
Zn:
Ni:
Part III:
You have found a new element with the atomic mass of 119. In a paragraph explain where you would put in on the periodic table and why you would put it there. What type of properties would this element have? What would you call it?
Answers
Answer:
Iron: Fe
Co: Cobalt
Na: Sodium
Tin: Sn
P: Phosphorus
F: Flourine
Fe: Iron
Magnesium: Mg
Uranium: U
Ca: Calcium
Carbon: C
Lead: Pb
Ag: Silver
Zn: Zinc
Ni: Nickle
----------------
There is honestly no right answer for this but here is what I would put:
Atomic mass increases as you go from left to right. If you look at the periodic table, it would be between Sn and Sb. It would bet here because Sn is 118 and Sb is 121. Basing it off of Antimony and putting it in group 15, the properties are that it is metallic and is a poor conductor of heat. I would call it Stin, which would be shortened to St.
How would understanding the properties of matter be helpful.
Answers
Explanation:
Matter is the basic unit of all things in the world, whether living or nonliving. It is not only useful in chemistry, but also to other fields of science like physics. Physics deals with motion, so it has something to do with matte especially the movement of molecules for solids and fluids.
Pb(NO3)2(aq) + KCl(aq) ---- → KNO3(aq) + PbC12(s)
Answers
Pb(NO3)2(aq) + 2KCl(aq) -> 2KNO3(aq) + PbCl2(s)
Just remember: the equations at the end is Cl not C12
Note: the small number on the bottom (subscripts) apply to the one element if it’s inside the bracket and if the small number is on the outside of the bracket it applies to all the elements. For example the 3 in (NO3)2 applied only to the O (oxygen) and the 2 applies to both N and O but don’t forget it’s multiplied. So it would be 2 N’s and 6 O’s bc the 3 multiplies with the 2 only for the O.
How does the temperature of the water affect
the movement of the food coloring?
pls help
Answers
Answer:
In cold water, the food coloring diffuses (spreads out) through the water slowly. The hot water causes the food coloring to diffuse faster.
Explanation:
Why does the pressure inside a container of gas increase if more gas is added to the container?
Why does the pressure inside a container of gas increase if more gas is added to the container?
There are greater differences in the distances between the molecules.
There is a corresponding increase in the number of molecules striking the walls of the container per unit time.
There is a increase in the force of the collisions between the molecules and the walls of the container.
Answers
The pressure inside a container of gas increases if more gas is added to the container due to the increase in the number of molecules striking the walls of the container per unit time and the increase in the force of the collisions between the molecules and the walls of the container.
Pressure is defined as force per unit area and is usually measured in atmospheres (atm), millimeters of mercury (mmHg), or kilopascals (kPa).The molecules of gas in a container are in constant motion and collide with the walls of the container. When more gas is added to the container, the molecules have less space to move around and collide with the walls more frequently.
This leads to an increase in the number of collisions per unit time and therefore an increase in the force per unit area exerted on the walls of the container. This increase in force leads to an increase in pressure inside the container.In summary, the pressure inside a container of gas increases if more gas is added to the container due to an increase in the number of collisions and the force of the collisions between the molecules and the walls of the container.
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For the reaction A(aq) + 2B(aq) = C(s) + D(aq), the initial concentrations of A and B are respectively 0.5M and 0.1M. The equilibrium expression will be... Note: input exponents as "w. Example: "b squared" should be input b^2. Х (no answer) 0.1^2 7 х 0.5-1 х 0.5^1 Кс es
Answers
At equilibrium, the concentrations of reactants and products will be such that the rate of the forward reaction is equal to the rate of the reverse reaction, and the system is said to be at dynamic equilibrium.
The equilibrium expression for the given reaction would be:
Kc = [C][D]/([A][B]^2)
Where [A] = 0.5 M and [B] = 0.1 M are the initial concentrations of reactants A and B. The equilibrium concentrations of all the species involved in the reaction will depend on the value of the equilibrium constant Kc, which is determined by the temperature of the system. At equilibrium, the concentrations of reactants and products will be such that the rate of the forward reaction is equal to the rate of the reverse reaction, and the system is said to be at dynamic equilibrium.
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Aditya Birla Cement Manutacturing Company manufactures cement for use in construction of stone builelings. Beginning work in process inclustes 400 urvits that are 20% compiete with respect to conversion and 30% complete with respect to materials. Ensing work in process inclades 200 units that are 40% complete with respect to corversion and 50 E complete with respect to materials, 2,000 units were stated duting the perlod. Also, assume that $9,900 of material costs and $14,880 of cortversion costs were in the beginning inventory and $180,080 of materials and $409,200 of conversion costs were added to paoduction duing the period. What is the total cost pet equivalent unit using the weighted average method? Multiple Choice $26860 $26785 578000 $26500
Answers
The correct option is $26785.To calculate the total cost per equivalent unit using the weighted average method, we need to consider the costs incurred in both the beginning work in process and the units added during the period.
First, let's calculate the equivalent units of production for both conversion and materials:
Conversion costs:
Beginning work in process: 400 units × 20% complete = 80 equivalent units
Units added during the period: 2,000 units × 40% complete = 800 equivalent units
Total equivalent units for conversion = 80 + 800 = 880 equivalent units
Material costs:
Beginning work in process: 400 units × 30% complete = 120 equivalent units
Units added during the period: 2,000 units × 50% complete = 1,000 equivalent units
Total equivalent units for materials = 120 + 1,000 = 1,120 equivalent units
Next, let's calculate the total costs incurred:
Conversion costs:
Beginning work in process cost: $14,880
Costs added during the period: $409,200
Total conversion costs = $14,880 + $409,200 = $424,080
Material costs:
Beginning work in process cost: $9,900
Costs added during the period: $180,080
Total material costs = $9,900 + $180,080 = $189,980
Now, we can calculate the total cost per equivalent unit:
Total cost per equivalent unit = (Total conversion costs + Total material costs) / (Total equivalent units for conversion + Total equivalent units for materials)
Total cost per equivalent unit = ($424,080 + $189,980) / (880 + 1,120)
Total cost per equivalent unit ≈ $267.85
Therefore, the correct option is $26785.
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Obtain an expression for the isothermal compressibility κ = −1/V(∂V/∂P)T for a van der Waals gas.
Obtain an expression for the isothermal compressibility for a van der Waals gas.
a κ=1Vm[RT(Vm−b)3+2aV3m]
b κ=−1Vm[2aV3m−RT(Vm−b)2]
c κ=−1Vm[RT(Vm−b)2−2aV3m]
d κ=1Vm[2aV3m−RT(Vm+b)2]
Answers
This expression corresponds to option (c) in your list: = -1/Vm [RT(Vm - b)2 - 2a/Vm3]. The correct option is C.
The expression for the isothermal compressibility (κ) for a van der Waals gas can be derived from the van der Waals equation. The van der Waals equation is given by:
(P + a(n/V)^2)(V/n - b) = RT
To obtain an expression for the isothermal compressibility κ = -1/V
(∂V/∂P)T, we first need to find the partial derivative of volume V with respect to pressure P at constant temperature T.
Differentiating the van der Waals equation with respect to P and rearranging terms, we get:
∂V/∂P = n / [(RT/(P + a(n/V)^2)) - (nab/V^2)]
Now, we can substitute this expression into the formula for isothermal compressibility:
κ = -1/V(∂V/∂P)T = -1/V(n / [(RT/(P + a(n/V)^2)) - (nab/V^2)])
To simplify further, let Vm = V/n (molar volume):
κ = -1/Vm [1 / (RT/(P + a/Vm^2) - (ab/Vm^2))]
This expression corresponds to option (c) in your list:
κ = -1/Vm [RT(Vm - b)^2 - 2a/Vm^3]
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Please someone I need help with chemistry ! If you can’t do them all that is fine please just do what you can and help . Please !
11. 2H202 (1) - 2H20 (1) + 02(g)
Drake asked Theo why the decomposition of hydrogen peroxide, H202, loses mass, especially when there are more molecules on the product side. Theo explains that it is because they decomposed the product. He says that decomposing the product destroys the original substance. To further prove his point, he explains that in nature, decomposition occurs when dead organic matter is destroyed by fungi: without this, the world would be littered with dead things. What, if anything, is wrong with this conversation of what happened in the reaction? Justify your answer.
13. Lab Analysis: You forgot to label your chemicals and do not know whether your unknown solution is strontium nitrate or magnesium nitrate. You use the solutions potassium carbonate and potassium sulfate in order to determine your mistake. unknown + potassium carbonate & unknown + potassium sulfate . What do you observe when the unknown solution is mixed with potassium sulfate? (Can you see the shape underneath?)
14. Lab Analysis: You forgot to label your chemicals and do not know whether your unknown solution is strontium nitrate or magnesium nitrate. You use the solutions potassium carbonate and potassium sulfate in order to determine your mistake. unknown + potassium carbonate & unknown + potassium sulfate . Write the complete balanced molecular equation(s) below of the reaction(s) that occurred, including the states of matter. HINT: Try writing ALL possible reactions that could have been created, and then decide which reactions actually occurred.
15. Lab Analysis: You forgot to label your chemicals and do not know whether your unknown solution is strontium nitrate or magnesium nitrate. You use the solutions potassium carbonate and potassium sulfate in order to determine your mistake unknown + potassium carbonate & unknown + potassium sulfate . From your observations, what is your unknown solution? A - magnesium nitrate or B - strontium nitrate
16. Lab Analysis: You forgot to label your chemicals and do not know whether your unknown solution is strontium nitrate or magnesium nitrate. You use the solutions potassium carbonate and potassium sulfate in order to determine your mistake. unknown + potassium carbonate & unknown + potassium sulfate . Justify your unknown solution in complete sentences, using your observations and the solubility rules as evidence in your explanation.
Answers
In the following lab activities:
11. In the conversation about the decomposition of hydrogen peroxide, Theo's explanation is incorrect. 12. no visible reaction occurs13. Mg(NO₃)₂ + K2CO₃ → MgCO₃ + 2KNO₃ and Mg(NO₃)₂ + K2SO₄ → No Reaction14. magnesium nitrate15. solubility rulesWhat are the results of these lab activities?The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction, only rearranged. Therefore, the total mass of the reactants must be equal to the total mass of the products. In the case of the decomposition of hydrogen peroxide, the loss of mass can be explained by the fact that some of the products, namely the oxygen gas, escape into the surroundings, leading to a decrease in the total mass of the system.
When the unknown solution is mixed with potassium sulfate, no visible reaction occurs. Therefore, it is not possible to determine the identity of the unknown solution based on this observation alone.
Possible balanced molecular equations for the reactions that occurred are:
Unknown + Potassium Carbonate → Magnesium Carbonate + Potassium Nitrate
Mg(NO₃)₂ + K2CO₃ → MgCO₃ + 2KNO₃
Unknown + Potassium Sulfate → No Reaction
Mg(NO₃)₂ + K2SO₄ → No Reaction
Based on the observations, the unknown solution is likely magnesium nitrate, as a reaction occurred when it was mixed with potassium carbonate, but no reaction occurred when it was mixed with potassium sulfate. This suggests that the unknown solution contains carbonate ions and not sulfate ions.
The identity of the unknown solution can be justified by using the solubility rules. Magnesium nitrate is soluble in water, as are potassium nitrate and magnesium carbonate. Potassium sulfate is also soluble in water. Therefore, when the unknown solution is mixed with potassium sulfate, no reaction occurs as both substances are soluble in water. However, when the unknown solution is mixed with potassium carbonate, magnesium carbonate is formed, which is insoluble in water and precipitates out of solution. This reaction suggests that the unknown solution contains magnesium ions and carbonate ions, indicating that it is magnesium nitrate.
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A rocket can be powered by the reaction between dinitrogen tetroxide and hydrazine:
20a
An engineer designed the rocket to hold 1. 35 kg N2O4 and excess N2H4. How much N2 would be produced according to the engineer's design? Enter your answer in scientific notation.
Answers
Expressing this answer in scientific notation, the amount of N2 produced according to the engineer's design would be approximately 1.467 x 10^1 mol.
To determine the amount of N2 produced in the reaction between dinitrogen tetroxide (N2O4) and excess hydrazine (N2H4), we need to consider the stoichiometry of the reaction.
The balanced equation for the reaction is:
N2H4 + N2O4 → N2 + 2H2O
According to the stoichiometry of the reaction, for every one mole of N2H4, one mole of N2 is produced. The molar mass of N2H4 is approximately 32.05 g/mol.
Given that the rocket is designed to hold 1.35 kg (1350 g) of N2O4, we can calculate the moles of N2H4 required:
Moles of N2H4 = Mass of N2O4 / Molar mass of N2O4
Moles of N2H4 = 1350 g / 92.01 g/mol ≈ 14.67 mol
Since the stoichiometry is 1:1, the amount of N2 produced will be equal to the moles of N2H4:
Moles of N2 produced = Moles of N2H4 ≈ 14.67 mol
Expressing this answer in scientific notation, the amount of N2 produced according to the engineer's design would be approximately 1.467 x 10^1 mol.
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Complete and balance the double replacement reaction between calcium acetate and lithium phosphate.
Answers
Answer:
2Li3PO4(aq) + 3Ca(C2H3O2)2(aq)
- - - > Ca2(PO4)2(s) + 6LiC2H3O2(aq)
Suppose you mix NaCl and AgNO3 solutions according to the given equation. NaCl (aq) + AgNO3(aq) + AgCl(s) + NaNO3 (aq) What evidence of a reaction do you expect to see? Select one: a. A precipitate should form. b. A small molecule should form. c. A gas should form. d. No reaction should occur.
Answers
When solutions of NaCl and AgNO3 are mixed a. A precipitate should form.
When solutions of NaCl and AgNO3 are mixed precipitation reaction Occurs, resulting in the formation of a solid silver chloride (AgCl) Precipitate. This is because silver chloride is insoluble in water and will Precipitate out of solution. The balanced equation for the reaction is:
NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq)
Therefore, When NaCl and AgNO3 solutions are mixed, a white precipitate of silver chloride formed.
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If we put some water in a plate and allow the plate and allow the plate to lie in sunlight we find that water from the plate disappear moreover even if we keep the plate in the shade it still disappear
Answers
Answer:
Evaporation
Explanation:
Evaporation is the process by which water changes from the liquid state to the gaseous state.
Unlike boiling that only occurs at a specific temperature (boiling point), evaporation occurs at any temperature. This explains why water disappear when placed under direct sunlight or under a shade.
1. If a gas exerts a pressure of 2.00 atm when 20. puffs of particles are present, how many puffs are necessary to increase the pressure to 4.50 atm?
Answers
Si un gaz exerce une pression de 2,00 atm lorsque 20 bouffées de particules sont présentes alors pour 4,50 atm il faut 45 bouffées car 20 bouffées = 2,00 atm donc 2*20=40 +0,5 =4,50
find the ph of a buffer solution of 60 ml of 0.25 m hcooh and 10.0 ml of 0.500m naxooh
Answers
the pH of the given buffer solution is 3.08.
The given buffer solution is made up of 60 mL of 0.25 M HCOOH and 10.0 mL of 0.500 M NaXOOH and we are to determine its pH.
The first step in solving this problem is to determine the moles of each species in the buffer. This can be accomplished by using the following equation:
n(HCOOH) = 0.25 moles/L x 0.060 L = 0.015 moles of HCOOHn
(NaXOOH) = 0.500 moles/L x 0.010 L = 0.005 moles of NaXOOH
Next, we need to calculate the concentration of the buffer:
Concentration of buffer = moles of HCOOH / total volume of buffer= 0.015 moles / (0.060 + 0.010) L = 0.1875 M
Now that we have the concentration of the buffer, we can use the Henderson-Hasselbalch equation to determine the pH:
pH = pKa + log ([A-] / [HA])
where pKa = 3.75 for HCOOHpH = 3.75 + log [(0.005 moles / 0.070 L) / (0.015 moles / 0.070 L)]= 3.75 + log [0.07143 / 0.21428]= 3.75 + (-0.6706)= 3.08
Therefore, the pH of the given buffer solution is 3.08.
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how many representative particles are in one mole of CO2? PLEASE ANSWER ALMOST DUE
Answers
Answer:
I hope this helps, sorry if it doesnt. Not really good with chemistry, hope you have a great day/night :}
Explanation:
A mole (mol) is the amount of a substance that contains 6.02 × 10 23 representative particles of that substance.
12.00 g C-12 = 1 mol C-12 atoms = 6.022 × 1023 atoms • The number of particles in 1 mole is called Avogadro's Number (6.0221421 x 1023).
A 5 gram sample for f water is heated and temperature rises dris m 10 to 15 degrees the total amount of heat energy absorbed by the water is
Answers
The total amount of heat energy absorbed by the water is 104.6 Joules.
To calculate the total amount of heat energy absorbed by the water, we need to use the specific heat capacity of water, which is 4.184 Joules per gram degree Celsius (J/g°C).
The change in temperature of the water is ΔT = 15°C - 10°C = 5°C.
The amount of heat energy absorbed by the water can be calculated using the formula:
Q = m x c x ΔT
where Q is the amount of heat energy absorbed, m is the mass of the water, c is the specific heat capacity of water, and ΔT is the change in temperature.
Substituting the given values, we get:
Q = 5 g x 4.184 J/g°C x 5°C
Q = 104.6 Joules
Heat and temperature are related concepts but they are not the same thing. Temperature is a measure of the average kinetic energy of the particles in a substance, while heat is the energy that is transferred between two objects as a result of a temperature difference. Temperature is measured using a thermometer and is expressed in units such as degrees Celsius or Fahrenheit. The temperature of a substance is directly proportional to the average kinetic energy of its particles - the higher the temperature, the faster the particles are moving.
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Consider the half reaction below.
Which statement best describes what is taking place?
Chlorine is losing electrons and being oxidized. Chlorine is losing electrons and being reduced. Chlorine is gaining electrons and being oxidized. Chlorine is gaining electrons and being reduced.
Answers
Answer:
balancing of charges of both sides
Answer:
A
Explanation:
A...............................
How many moles are present in 29.4g of Aluminum (AI)? *
Answers
Answer:
588 mole
29.4
+29.4
5 8. 8g
At which trophic level would you place an earthworm that eats decaying leaves on the forest floor?
Answers
Second trophic level
Answer:
The answer is= The second trophic level
Explanation:
The reason for this is because the description of an earthworm as it feeds on the second trophic level, And that is where you will find them feeding
what is the concentration in molarity of an aqueous solution which contains 5.06% by mass ethylene glycol (mm
Answers
Concentration in molarity of an aqueous solution which contains 5.06% by mass ethylene glycol IS 0.847 mol/L
Molarity [=] mol / L
wt% = (g C₂H₆O₂ / g s)×100
⇒ 0.0506 = g C₂H₆O₂ / g s
∴ mm C2H6O2 = 62.07 g/mol
∴ δ s = 1.04 g/mL
assuming: g s = 1 g
⇒ g C₂H₆O₂ = 0.0506 g
⇒mol C₂H₆O₂ = (0.0506 g)(mol/62.07 g) = 8.154 E-4 mol C₂H₆O₂
⇒ V s = 1g s / 1.04 g/mL = 0.9615 mL = 9.615 E-4 L s
⇒ C₂H₆O₂ = (8.154 E-4 )/(9.615 E-4 L s)
⇒ C₂H₆O₂= 0.847 mol/L
In terms of the amount of material per unit volume of solution, molar concentration is a measurement of the concentration of a chemical species, specifically a solute in a solution. The most frequent measure of molarity in chemistry is the number of moles per liter, denoted by the unit symbol mol/L or mol/dm3 in SI units.
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2. Which ions will form an ionic bond?
A. two negative ions
B. a positive and a neutral atom
C. two positive ions
D. a positive ion and a negative ion
Answers
Answer:
D. a positive ion and a negative ion
Explanation:
Ionic bonds is formed from the attraction of opposite full charges. So a positive ion and a negative ion will make a ionic bond (Similar to how Na+ and Cl- ions make salt - which is basically a crystal of ions bonded via ionic bonds)
What is wrong with the formula CH3CH2CH=CH3
1. The formula has too many H atoms bound to the right-most C atom
2. the formula has too many H atoms bound to the left-most C atom
3. The formula has too many H atoms bound to the second C atom
4. The formula is correct
Answers
1. The formula has too many H atoms bound to the right-most C atom.
Explanation:
Carbon atoms can only have four bonds. = means a double bond so there should only be 2 H atoms as two bonds are already taken up by the last Carbon.
If a 2,000-kilogram car accelerates at a rate of 3 meters per second squared,
what is the force the engine applied to the car?
HELP
Answers
Answer:
Explanation:
assuming there is no friction
fnet=ma
2,000 kg*3m/s=6,000 N
what is the importance of polar covalent and hydrogen bonds in the structure of water?
Answers
Answer:
Water is a remarkable substance, and its unique properties are largely due to the presence of polar covalent bonds and hydrogen bonds in its structure. These characteristics play a crucial role in the physical and chemical properties of water, making it essential for life as we know it.
Explanation:
The polar covalent bonds in water arise from the unequal sharing of electrons between oxygen and hydrogen atoms. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+). These charges create polarity within the water molecule, leading to the formation of hydrogen bonds.
Hydrogen bonds occur when the partially positive hydrogen atom of one water molecule is attracted to the partially negative oxygen atom of another water molecule. These hydrogen bonds are relatively weak individually, but when present in large numbers, they contribute to the cohesion, surface tension, and high boiling point of water.
The importance of these bonds is manifold. The cohesion between water molecules due to hydrogen bonding enables water to form droplets, have a high surface tension, and flow freely, facilitating transport within organisms and in the environment. Additionally, hydrogen bonding leads to the high specific heat capacity and heat of vaporization of water, making it an effective regulator of temperature in living organisms and ensuring stable environmental conditions.
Furthermore, hydrogen bonds play a crucial role in the unique properties of water as a solvent. The polar nature of water allows it to dissolve a wide range of substances, including ionic compounds and polar molecules, facilitating various biological processes such as nutrient transport and chemical reactions in cells.
Nitrogen (N) is element number 7 in the periodic table. It has a mass number of 14. Nitrogen
has gained 3 electrons. Nitrogen is a/an___.
a. Anion
bcation
c. Isotope
d. All of the above
Answers
Nitrogen is the central atom in molecules of nitrous oxide, N2O. The Lewis structure for another possible arrangement is shown here. Assign formal charges to each atom.
N=O=N
Answers
The Lewis structure of the molecule and the formal charge are shown in the image attached.
What is the Lewis structure?The term Lewis structure has to do with the structure that shows the arrangement of the atoms that can be found in a compound. In the Lewis structure we can find the symbols of the various elements in the compound and then the number of electron pairs that are attached to each of the atoms.
Now we can see that there are formal charges that are attached to particular structures. The formal structures are used to be able to tell us the overall charge that is present in the molecule.
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Which liquid substance would evaporate most quickly in the open air at 20°C? Explain our answer
Answers
Answer:
mp -5; bp 30
Explanation:
That will be a liquid at room temperature, and it will evaporate quite quickly. Room temperature is generally considered 20 degrees Celsius. Choice B melts from a solid to a liquid at -5 degrees, so it's a liquid at room temperature as long as the boiling point is higher than 20 degrees.
Both suspensions and colloids are heterogeneous mixtures. Define and characterize a suspension, listing similarities and differences to a colloid. Give several examples of suspensions.
Answers
Suspensions are similar to colloids in that they are both heterogenous mixtures and are not true solutions.
Suspensions differ from colloids in that the particle sizes are larger and settle when left to stand.
Some examples of suspensions are smoke and dust particles in the air.
What are suspensions and colloids?Suspensions are a heterogeneous mixture of substances in which one substance is dispersed or distributed throughout a second phase. The particles of a suspension when left to stand will settles over time.
Some examples of suspension are dust particles dispersed in air, a gas.
Other suspensions may be solids dispersed in liquids such as in milk of magnesia.
Colloids or false solutions are a heterogeneous mixture of substances that are dispersed throughout a second medium and in which the particles do not settle when left to stand. The articles of a colloid can not be seen with the unaided eye.
Examples of colloids are gels, emulsions, and sols.
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The bonds of the product store 27 KJ more energy than the bonds of the reactants how is energy conserved during this reaction
A.The reaction creates 27 kj of energy when bonds form.
B.The reaction system absorbs 27 kj of energy from the surroundings.
C.The reaction uses up 27 kj of energy when bonds break.
D.The surroundings absorb 27 kj of energy from the reaction system.
ANSWER: the answer is b
Answers
If the bonds of the product store 27 KJ more energy than the bonds of the reactants, It means the surroundings absorb 27 kj of energy from the reaction system Hence, Option (D) is the correct answer
What is the Exothermic reaction ?An exothermic process releases heat, causing the temperature of the immediate surroundings to rise.
The bonds of the product store 27 KJ more energy than the bonds of the reactants, It means that energy has been absorbed by the surrounding as the product formed is more stable due to more stronger bond
This can be inferred from more stored energy with in the bonds and Thus, It is a exothermic reaction.Hence, Option (D) is the correct answer
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