The compound with the highest boiling point is [tex]CH_{3} CH_{2} OH[/tex] .
So, option C is correct one.
The boiling point depend two factors,
Bonding between moleculeMolecular mass is directly proportional to the boiling point.The boiling point of ether is less than alcohols because alcohol form hydrogen-bonding .The hydrogen bond is strongest bond. So, ethyl alcohol and methyl alcohol has more boiling point than dimethy ether.
The propane molecules have only van-der waals force of attraction, which is weakest force of attraction.So, propane has lowest boiling point.
The molecular mass of ethanol is greater than methaol. So, ethanol has higher boiling point.
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3h2so4 2b(oh)3 - b2(so4)3 6h2o what is the mole ratio between water and sulfuric acid?
Since there is an equal number of each element in the reactants and products of 3H2SO4 + 2B(OH)3 = B2(SO4)3 + 6H2O, the equation is balanced.
What is Sulfuric acid?Sulfuric acid (H2S04) is a corrosive substance, that destroys the skin, eyes, teeth, and lungs. Severe vulnerability can result in death. Workers may be harmed from disclosure to sulfuric acid. The level of exposure depends on The sulfuric acid bleaching can substitute the presently assumed oxygen and chlorine stages if the additives are allowed. This bleaching process was also practical for oxygen-bleached hardwood kraft pulp, but it was less compelling for softwood kraft pulp and oxygen-bleached softwood kraft pulp.Disbanding sulfuric acid in water is an exothermic procedure. When sulfuric acid is mixed with ice this exothermic procedure causes the temperature to rise at first, but as more of the ice dissolves, the temperature falls.To learn more about Sulfuric acid, refer to:
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How many milliliters of 0. 0850 m naoh are required to titrate 25. 0 ml of 0. 0720 m hbr to the equivalence point?
The final answer is 29.8 mL
Molar mass HCl = 36.5 g/mol
Mol HCl in 1.85 g = 1.85 g / 36.5 g/mol = 0.05068 mol
The molarity of the HCl solution is 0.0507 mol /L
Mol HCl in 50 mL = 50 mL / 1000 mL/L * 0.0507 mol /L = 0.002535 mol
This will require 0.002535 mol NaOH
1000 mL contains 0.0850 mol
The volume that contains 0.002535 mol
Volume = 0.002535 mol / 0.0850 mol /L *1000 mL/L = 29.8 mL
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The volume of 0.0850 M NaOH is required to titrate 25.0 ml of 0.0720 M is 21.176 ml.
What are normality and molarity?Normality is defined as the number of equivalents per litre of the solution
It is given by
Normality = number of equivalents / 1 L of solution
Molarity is defined as the number of moles of solute present in one litre of solution
Molarity = moles of solute / 1 litre of solution
Relationship between molarity and normality
Normality = Molarity × Acidity or Basicity of a salt
Here, the Acidity Of NaOH is 1 and the basicity of HBr is also 1.
Thus, Normality = Molarity
We know, N₁V₁ = N₂V₂
We can also write it as M₁V₁ = M₂V₂
V1 = [tex]\frac{M_2V_2}{M_!}[/tex]
Substitute M₁ = 0.0850 M, M₂ = 0.0720 M, V₂= 25 ml
V1 = 21.176 ml
Hence, The volume of 0. 0850 m NaOH are required to titrate 25. 0 ml of 0. 0720 m is 21.176 ml.
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You have twenty ml of a 90 mmol/liter solution of glucose. if you add forty ml of water, the concentration of glucose in the new solution will be:_____.
The concentration of glucose in the new solution will be
30 M mol/liter.
Subtract the solute's mass from the total volume of the solution. Using m as the solute's mass and V as the total volume of the solution, write out the equation C = m/V.
A concentrated solution is referred to as a stock solution since it will be diluted to a lesser concentration before usage. M₁V₁ = M₂V₂ is the dilution equation.
A diluted solution = stock solution.
M₁ is the stock solution's molarity.
M₂ stands for the diluted solution's molarity.
V1 is the volume of the starting solution.
V2 is the volume of the final solution.
M₁ = 90M mol/liter
V₁ = 20mL
V₂ = 40mL
Using the formula,
M₁V₁ = M₂V₂
20mL × 90 M mol/liter = 40mL × M₂
M₂ = 30 M mol/liter
Therefore, the concentration of glucose in the new solution will be
30 M mol/liter.
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A blue train of mass 50 kg moves at 4 m/s toward a green train of 30 kg initially at rest. The trains collide. After the collision the green train moves with a speed of 3 m/s. What is the final momentum of the blue train?
A. 110 kgm/s
B. 200 kgm/s
C. 20 kgm/s
D. 90 kgm/s
Reset the simulation by clicking the reload button at the bottom right corner of the screen. move the chemistry book down again so its surface touches the surface of the physics book. quickly move the chemistry book back and forth. what’s different when the motion is faster?
The temperature of the physics book increasing as the chemistry book slides across it is the difference when motion is faster.
Because the molecules have kinetic energy, molecular motion rises with rising temperature and decreases with falling temperature. At absolute zero, molecular motion comes to a complete standstill.
What is Temperature ?This is defined as the degree of hotness or coldness of a body and it increases when there is more friction.
When motion is faster, there is an increase in friction and increase in thermal(heat) energy which leads to increase in temperature.By increasing the temperature, the velocity of the particles is accelerated. In contrast, lowering the temperature slows down the motion of the particles until it eventually stops entirely at absolute zero (0 K). The particles will have kinetic energy since they are moving.Learn more about Temperature here:
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Answer:
The speed of the particles increases for both books, and the temperature of the physics book increases even more.
Explanation:
edmentum
An electron initially in a 4p state decays to a lower energy state. which energy state is forbidden?
The state of energy that is forbidden is 2p orbital. The correct option is b).
What is the energy state of electrons?The energy state of an electron depends upon the presence of the electron on the orbitals. Lower the energy they will be in the lower orbital. When they get higher energy they move to the higher orbital.
By using the Selection Rules for Electron Transitions
1.) ?l = +/- 1 and
2.) ?m = 0, +/- 1
The conservation of angular momentum is required by these laws. A photon's inherent angular momentum is 1. As 4p is higher than 2p and the electron is lowering its energy. So, it will go down to 2p orbital.
Thus, the correct option is b). 2p orbital.
The question is incomplete. Your full question is given below:
a) 3d
b) 2p
c) 1s
d) 2s
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How much energy, in kilojoules, is required to melt 20 kg of ice at 0°C?
The energy required to melt 20 kg of ice at 0°C is 6.68 kJ.
The enthalpy change for melting of an ice is called the enthalpy of fusion. Its value is 6.02 kJ/mol. This means for every mole of ice we must apply 6.02 kJ of heat for melting. The calculation of heat is done by following equation.
q = n×ΔH
q is heat n is number of molesΔH is change in enthapyin this problem we need to calculate heat needed to melt 20grams of ice at 0°C .
Calculation of moles of water,
Number of moles of water (n) = given mass/ molar mass = 20g/18.02g/mol
Number of moles of water (n) = 1.109 mole
heat or energy required = q = n×ΔH = 1.109 mole× 6.02 kJ/mol = 6.68 kJ
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A solution containing a buffer has an initial ph of 8.78. If a student adds 5 drops of hcl(aq) to this solution. What would be a reasonable ph for the resulting solution?
Buffer is a solution that has been known to have an acid and base dissolved with constant hydrogen concentration. If 5 drops of HCl are added to the buffer then the final pH will be 8.64. Thus, option a is correct.
What is pH?pH has been the concentration that is made of hydrogen or proton ions. The ions have been known to be released from the acids while the bases release the hydroxide ions.
The given buffer has a pH of 8.78, and hence, it is a basic buffer. If the solution of HCl (strong acid) is added to this buffer then the pH will decrease definitely. As only 5 drops are added there will be not much decrease in the pH.
Therefore, option a. the pH of the buffer after addition to HCl will be 8.64.
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Your question is incomplete, but most probably your full question was, A solution containing a buffer has an initial pH of 8.78. If a student adds 5 drops of HCl(aq) to this solution. What would be a reasonable pH for the resulting solution?
8.648.787.008.895.2250 examples word equation with balanced chemical equarion
How many electrons are shared between one nitrogen atom and one carbon atom? two three six seven
the nitrogen and the carbon are sharing six electrons! A single bond is created when two atoms share two electrons. If they share four, their bond is doubled. These two are actually sharing a six, which is a triple bond.
How many electrons does the carbon atom share?By sharing four pairs of electrons through the formation of four covalent bonds, carbon fills its outer energy level and achieves stability.
How many electrons do nitrogen atoms share?Only the nitrogen atoms' valence shells are taken into account while thinking about the bonding in a nitrogen molecule. Eight electrons can fit in total in nitrogen's outer shell. Therefore, the nitrogen atoms share three electrons each in order to produce the most stable structure.
What holds carbon and nitrogen together?One of the most frequent bonds in organic chemistry and biochemistry is the covalent bond between carbon and nitrogen. With five valence electrons, nitrogen is trivalent in simple amines, with the two extra electrons forming a lone pair.
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Suppose protons were emitted rather than electrons. How would this affect the experiment?
Suppose protons were emitted rather than electrons then it affects the experiment as the mean velocity of proton will be less then mean velocity electron .
The mass of proton is greater than the mass of electrons but charge of electron is equal to the charge of proton . So , due to difference in the mass of electron and proton there will be some effects. We can conserve the electric energy which is equal to the qe .
The kinetic energy = 1/2[tex]mv^{2}[/tex]
Now changing the electric potential energy into kinetic energy
v = √2qe/m
The mean velocity of proton will be less then mean velocity electron .
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How many grams of al2o3 (mm = 101. 96 g/mol) are produced when 91. 7 grams o2 reacts with excess aluminum?
Answer:
Explanation:
1. Write down the balanced equation
2. Use molar mass of O2 (32g/mol) divided by the given mass to derive the amount of mols
3. multiply the answer by 2/3 (divide by 3 then multiply by 2), to ensure the mols are in correct proportion
4. Use given molar mass and multiply it by the amount
5. Make sure to use proper significant digits (3 in this case) and units :)
How does the valency of an element show its reactiveness in a chemical reaction
Answer:
Within each group of metals, reactivity increases as you go down the group. The valence electrons are less tightly bound and easier to remove, because they are farther away from the nucleus of the atom. A nonmetal tends to attract additional valence electrons to attain a full valence shell.
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Explain the impact that changing the temperature has on a system in a state of dynamic equilibrium. what will happen when the temperature of an exothermic reaction mixture at equilibrium is increased?
An endothermic reaction is favored by raising the temperature of a system in dynamic equilibrium. The mechanism absorbs the increased heat to offset the alteration you made. An exothermic reaction is favored by a system's temperature falling while it is in dynamic equilibrium.
Which of these reactions is endothermic?Any chemical process that takes heat from its surroundings is said to be endothermic. The reaction's activation energy comes from the energy that was absorbed. This kind of reaction is characterized by its icy sensation.
How does an exothermic reaction work?An exothermic reaction is one in which energy is given off as heat or light. In contrast to an endothermic process, which draws energy from its surroundings, an exothermic reaction transfers energy into the environment.
What kind of reaction is an exothermic reaction?Materials like hydrocarbons reacting with oxygen to produce combustion products like water and carbon dioxide is an example of an exothermic process.
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It takes 11. 2 kj of energy to raise the temperature of 145 g of benzene from 23. 0°c to 68. 0°c. what is the specific heat of benzene?
If we takes 11. 2 kj of energy to raise the temperature of 145 g of benzene from 23. 0°c to 68. 0°c, then the specific heat of benzene is
1716.475 J/kg.°C.
Specific Heat capacity is given as
Q = cm(t₂-t₁) ................[tex]equation 1[/tex]
Where Q = quantity of heat, c = specific heat of benzene, m = mass of benzene, t₁ = initial temperature, t₂ = final temperature.
[tex]C[/tex] = [tex]\frac{Q}{m_{(t2-t1)} } ...........equation 2[/tex]
Given:
[tex]Q = 11.2 kJ = 11200 J \\\\m= 145\\\\g = 0.145 kg\\\\t_{2} = 68.0 °C\\\\t_{1} = 23.0 °C[/tex]
Substitute into equation 2.
[tex]C = \frac{11200}{[0.145(68-23)]}\\\\ C= \frac{11200}{6.525}\\\\ C= 1716.475 J/kg °C[/tex]
Hence the specific heat of benzene = [tex]1716.475 J/kg °C[/tex]
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A salt solution contains ammonium cation (ka = 5.7 × 10^–10) and nitrite anion (kb = 1.4 × 10^–11) in equal proportions. The ph of the solution will be?
The ph of the solution will be acidic. It is because of the higher ka value of ammonia as compared to kb of nitrate
As we know, A salt solution contains ammonium cation (ka = 5.7 × 10^–10) and nitrite anion (kb = 1.4 × 10^–11) in equal proportions but the ka and kb are different.
As we see that the value of ka is higher than the kb that's why the ph level will be acidic.
Acidic solutions are sour in taste as compared to alkaline solutions.
We know that the ph scale basically ranges from 0 to 14. The ph solutions less than 7 are acidic and greater than 7 are basic.
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H2o is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place?
H2o is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. Gaseous state to liquid state has most likely take place.
In the gaseous state, molecules of water are far away. Hence intermolecular forces are weak.
But when water vapours changes into liquid state molecules start coming closer. And hence intermolecular forces become strong.
Due to this entropy of water molecules decreases.
Thus from above we concluded that when water vapour changes into liquid its molecules is slow down.
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Complete and balance the molecular equation, including the phases, for the reaction of aqueous potassium sulfate, k2so4 , and aqueous strontium iodide, sri2.
The complete and balanced molecular equation is-
K₂SO₄(aq) + SrI₂(aq) → KI(aq)+ SrSO₄(s)
Both sides of the reaction must have an equal amount of atoms in each element to balance the equation.
What is a balanced chemical reaction?A balanced chemical reaction is one in which both the reactant and product sides of the reaction include an equal number of atoms from each of the constituent components. For the chemical equation to adhere to the Law of the conservation of mass, it must be balanced.An equation that has the same number of each type of atom on both sides of the arrow is said to represent a balanced chemical reaction. A chemical reaction is represented symbolically in writing by a chemical equation. The chemical(s) used as the reactant(s) are listed on the left and the chemical(s) used as the product(s) are listed on the right. A chemical reaction requires an equal number of atoms in the reactants and products because, according to the rule of conservation of mass, atoms cannot be generated or destroyed throughout the process.How to balance a molecular chemical equation?First of all, identify the most complicated or complex substances.If possible, start with that material and pick an element or elements that are present in only one reactant and one product. To get the same number of atoms of this element(s) on both sides, adjust the coefficients.If polyatomic ions are present on both sides of the chemical equation, they should be balanced as a whole.The remaining atoms are then balanced, typically ending with the substance that is the least complicated and, if necessary, employing fractional coefficients. In order to get whole numbers for the coefficients if a fractional coefficient was used, multiply both sides of the equation by the denominator.To learn more about Molecular equation click on-
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Balanced molecular equation is :
K₂SO₄(aq) + SrI₂(aq) → KI(aq)+ SrSO₄(s)
What is Balanced equation?
If both the reactants and the products of a chemical reaction have the same number of atoms and total charge, the equation for the reaction is said to be balanced. In other words, the mass and charge balances on both sides of the reaction are equal.The equation must be balanced so that each type of atom appears in equal amounts on both the left and right sides of the arrow. This is accomplished by altering the compounds' coefficients (numbers placed in front of compound formulas).In an imbalanced chemical equation, the reactants and products of a reaction are provided, but the amounts required to satisfy the conservation of mass are not given.Learn more about the balanced equation with the help of the given link:
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A monosaccharide that contains 6 carbon atoms, one of which is in an aldehyde group, is classified as a(n)?
A monosaccharide that contains 6 carbon atoms, one of which is in an aldehyde group, is classified an Aldohexose.
Monosaccharides of specific sizes may be indicated by names composed of a stem denoting the number of carbon atoms and the suffix -ose.
For example, the terms triose, pentose, and hexose signify monosaccharides with, respectively, three, four, five, and six carbon atoms. Monosaccharides are also classified as aldoses or ketoses.
Those monosaccharides that contain an aldehyde functional group are called aldoses; those containing a ketone functional group on the second carbon atom are ketoses. Combining these classification systems gives general names that indicate both the type of carbonyl group and the number of carbon atoms in a molecule.
. Glucose and fructose are specific examples of an aldohexose and a ketohexose, respectively.
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The bluish color that makes the atmosphere of neptune so beautiful to the human eye is caused by the interaction of sunlight with what gas?
The bluish color that makes the atmosphere of neptune so beautiful to the human eye is caused by the interaction of sunlight with methane gas.
The compositions of Uranus but also Neptune are fairly similar at high altitudes. The existence of methane in both ice giants' upper atmospheres may be responsible for their blue hue. The majority of the red light that strikes the planets is absorbed by methane, giving the planets their blue appearance.
The blue marble occurrence of the faraway planet is actually a result of methane gas clouds. Methane is a gas that, despite making up a very small fraction of Neptune's atmosphere, absorbing red light's wavelengths while reflecting blue light outward.
Therefore, the bluish color that makes the atmosphere of neptune so beautiful to the human eye is caused by the interaction of sunlight with methane gas.
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Heliox is a mixture of helium and oxygen gas used to help patients with breathing difficulties. It is also used for scuba diving. The total pressure in a tank of heliox is 208 atm. If the mole fraction of o2 is 0. 220, what is the partial pressure of he in the tank?.
Partial pressure of helium gas in the tank is 162.24 atm.
Partial Pressure:
A partial pressure is the imaginary pressure that a gas would have if it were to occupy the complete volume of the initial mixture by itself at the same temperature. Each gas in a mixture of gases has a partial pressure.
Explanation:
Total pressure in Heloix (P) = 208 atm
The mole fraction of an individual gas component in an ideal gas mixture can be expressed in terms of the component's partial pressure or the moles of the component
Mole fraction of oxygen (X₀) = 0.220
The sum of the mole fractions of all the components present must equal 1.
Mole fraction of helium (Xₐ) = 1-(X₀) = 1- 0.220= 0.78
According to Dalton's law of partial pressure.
Partial pressure of an individual gas component in an ideal gas can be obtained using this expression:
Partial pressure of oxygen gas in Heloix: P*X₀ = 208 * 0.22 = 45.76 atm
Partial pressure of helium gas in Heloix: P*Xₐ = 208 * 0.78 = 162.24 atm
Partial pressure of helium gas is 162.24 atm.
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Write the chemical symbols for three different atoms or atomic cations with 25 electrons
Answer:
Three different atoms or atomic cations with 25 electrons = Mn ,Fe¹+ ,Co²+ ,Ni³+ ,Cu⁴+
Solute s has a distribution constant of 5. 0 between water (phase 1) and hexane (phase 2). calculate the concentration of solute s in hexane if [s]water is 0. 011 m.
Solute s has a distribution constant of 5. 0 between water (phase 1) and hexane (phase 2), then the concentration of solute s in hexane if [s]water is 0. 011 m is 0.055m.
What is partition Coefficent?It is defined as the ratio of the concentration of solute in two immiscible ( or slightly miscible liquid) in two solids, when they are in equilibrium across the interface between them.
What is concentration?It is defined as the ratio of number of moles of compound to the volume of compound.
Solute S has a partition coefficient of 5 between water and hexane
Partition coefficient Kd = 5.0
Now we calculate the concentration of S in hexane
[hexane]/[water] = Kd
[Hexane]= 5.0 × (water)
[Hexane] = 5 × (0. 011)
[Hexane] = 0.055 m
Thus, we found that the concentration of solute of hexane if water is 0.011m is 0.055m.
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When magnesium reacts with hydrochloric acid, hydrogen gas is produced. The amount of gas produced is dependent upon the concentration of hydrochloric acid. Below is the data for a reaction with 1 molar hydrochloric acid. Determine which of the choices shows possible data for a reaction with 2 molar hydrochloric acid. time (mins) 0 123TLON8S 4 5 6 7 9 10 1 M acid hydrogen (cm³) ARANY 17 ATE 230VEL TEEN 0 14 24 31 36 41 44 46 47 48 48
Magnesium is a metal that reacts quickly. Magnesium chloride or hydrogen gas will be produced during the reaction with hydrochloric acid. Following will happen as a result: Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g).
What happens in the magnesium-hydrochloric acid equation reaction?The equation for how magnesium interacts with hydrochloric acid reads: Mg(s)+2 HCl(aq) = MgCl2(aq)+H (g) This experiment can be used to demonstrate the production of hydrogen gas, a single displacement reaction, or even the typical reaction for metals with acid.
Why do hydrochloric acid and magnesium produce heat?Because energy was released into the environment when magnesium or oxygen particle collide to create new bonds, burning magnesium is indeed an exothermic reaction. Baking soda and citric acid react endothermically when the temperature drops. As the temperature rises, magnesium or hydrochloric acid undergo exothermic reactions.
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Determine the number of nh4 nh4 and co32−co32− ions required to form a neutral ionic compound
The number of NH₄⁺ NH₄⁺ and CO₃⁻² CO₃⁻² ions required to form a neutral ionic compound are 2 and 1 respectively.
A Neutral Ionic Compound means a compound that is made by both positively and negatively charged ions i.e. cations and anions respectively.
NH₄⁺ is called as Ammonium ion formed due to addition of H+ (Proton) in Ammonia and CO₃⁻² is called as Carbonate ion formed with a Trigonal Planar structure.
For a compound having NH₄⁺ and CO₃⁻², a neutral compound can be made by keeping the total charge on the compound to be zero.
Hence, Ammonium carbonate (NH₄) ₂CO₃ is a neutral compound formed by taking 2 NH₄⁺ and 1 CO₃⁻² ions.
So, for the formation of the Neutral compound i.e. Ammonium carbonate (NH₄) ₂CO₃ , 2 NH₄⁺ and 1 CO₃⁻² is needed.
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4. How much energy will it take to raise the temperature of 75.0 g of water from 20.0 °C to 55.0 °C?
Specific heat of water = 4.184 J/(g°C)
A. 63 J
B. 630 J
C. 2630 J
D. 1.1 x 10¹ J
Answer:
1.1 x 10⁴ J
Explanation:
To calculate eth energy needed, you need to use the following equation:
Q = mcΔT
In this equation,
-----> Q = energy/heat (J)
-----> m = mass (g)
-----> c = specific heat (4.184 J/g°C)
-----> ΔT = change in temperature (°C)
You can plug the given values into the equation and solve.
Q = mcΔT
Q = (75.0 g)(4.184 J/g°C)(55.0 °C - 20.0 °C)
Q = (75.0 g)(4.184 J/g°C)(35.0)
Q = 11,000 J
Q = 1.1 x 10⁴ J
Amines are ________. brønsted-lowry bases brønsted-lowry acids neutral in water solution unreactive
Answer:
A.) Brønsted-Lowry bases
Explanation:
Amines have a lone pair of electrons.
Brønsted-Lowry bases donate a lone pair of electrons in exchange for a hydrogen ion.
Therefore, if exposed to an acid, amines will give up electrons in order to bond with a hydrogen. This makes them Brønsted-Lowry bases.
3.0 mol Na reacts with 1.4 mol F2 according to the equation below:
2Na+F2= 2NaF
How many moles of NaF form from 1.4 mol F2?
Taking into account the reaction stoichiometry, 2.8 moles of NaF are formed when 3.0 mol Na reacts with 1.4 mol F₂.
Reaction stoichiometryIn first place, the balanced reaction is:
2 Na + F₂ → 2 NaF
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
Na: 2 molesF₂: 1 mole2 NaF: 2 molesLimiting reagentThe limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
Limiting reagent in this caseTo determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 2 moles of Na reacts with 1 mole of F₂, 3 moles of Na reacts with how many moles of F₂?
[tex]amount of moles of F_{2} =\frac{3 moles of Nax 1 moles of F_{2}}{2 moles of Na}[/tex]
amount of moles of F₂= 1.5 moles
But 1.4 moles of F₂ are not available, 1.4 moles are available. Since you have less moles than you need to react with 3 moles of Na, F₂ will be the limiting reagent.
Mass of NaF formedThe following rule of three can be applied: if by reaction stoichiometry 1 mole of F₂ form 2 moles of NaF, 1.4 moles of F₂ form how much mass of NaF?
[tex]moles of NaF=\frac{1.4 moles of F_{2}x2 moles of NaF }{1 mole of F_{2} }[/tex]
moles of NaF= 2.8 moles
Then, 2.8 moles of NaF are formed when 3.0 mol Na reacts with 1.4 mol F₂.
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What is the study of living things called?
OA. Earth science
O B. Physics
O C. Chemistry
O D. Biology
Answer:
D
Explain:
Biology because normally everyone just studies under it so that is my answer for you i hope its right.
Which of the given ions have the same ground state electron configuration: s2-, n3-, mg2 , and br-? a. s2-, n3-, mg2 , and br- b. s2-, n3-, and br- c. n3- and mg2 d. s2- and br- e. mg2 and br-
N3- and Mg2 ions have the same ground-state electron configuration.
Ground-state electron configuration:Understanding molecule bonding, characteristics, and structures begin with understanding ground state electron configurations. The ground state electron configuration provides insight into a wide range of atomic properties, including the electrons in an atom, distinct orbitals, and hybridization.
The ground state of an atom's electrons is the lowest energy state that is feasible for that atom since, throughout the cosmos, a system's natural state is to use the least amount of energy.
Aufbau-Principle: If you have a lot of luggage, you'll probably choose the room that is closest to the ground floor in a hotel without an elevator. The Aufbau principle demonstrates the identical behavior of electrons in the ground state. According to the Aufbau principle, electrons first occupy lower energy orbitals before moving on to higher energy orbitals.
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