1. I think r0b a bank would be such a rush. Imagine r0b a bank, driving a souped up getaway vehicle, and then successfully escaping with loads of cash...., that would be such an adrenaline rush.
2. Nationwide animal release. Just ninja into pounds and shelters and set them all free. It'd get to the point that they'd have to get armed guards. Soon wild packs of pugs and Chihuahuas roam freely claiming their territory against man.
3. Putting glitter bombs in mailboxes. Not sending but personally taping it in there so it goes off when opened.
how small atom partical are?
Atoms of particles are so small that they cannot be divided further by any physical means.
What are atoms?According to John Dalton, atoms are the smallest, indivisible particles of elements.
However, it was later found out that chemically, atoms consist of protons, neutrons, and electrons.
Thus, the indivisibility of atoms that John Dalton was referring to must be that of physical division.
In other words, the particles of atoms are so small that dividing them further using physical means is absolutely impossible.
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What is the molarity of a NaOH solution if 32.47 mL is required to titrate 0.6013 g of potassium hydrogen phthalate (C8H5O4K)
Answer:
0.0907 M
Explanation:
Before you can calculate the molarity, you need to convert grams to moles (via molar mass) and convert mL to L.
(Step 1)
Molar Mass (C₈H₅O₄K):
8(12.011 g/mol) + 5(1.008 g/mol) + 4(15.998 g/mol) + 39.098 g/mol
Molar Mass (C₈H₅O₄K): 204.218 g/mol
0.6013 g C₈H₅O₄K 1 mole
------------------------------ x ------------------ = 0.00294 moles C₈H₅O₄K
204.218 g
(Step 2)
1,000 mL = 1 L
32.47 mL 1 L
--------------- x ----------------- = 0.03247 L
1,000 mL
(Step 3)
Molarity (M) = moles / volume (L)
Molarity = 0.00294 moles / 0.03247 L
Molarity = 0.0907 M
What is the expected markovnikov addition product from the addition of hi to 2-methyl-2-butene?.
Markovnikov addition product from the addition of hi to 2-methyl-2-butene is 2-iodo-2-mehtylbutane.
What is Markonikov rule?
In natural science, Markovnikov's standard or Markownikoff's standard portrays the result of some expansion responses. The standard was formed by Russian scientist Vladimir Markovnikov in 1870.Markovnikov's standard is an exact rule used to foresee regioselectivity of electrophilic expansion responses of alkenes and alkynes.Markovnikov predicts the results of an electrophilic expansion of hilter kilter reagents (for example hydrogen halides, water and alcohols) to hilter kilter alkenes.To learn more about Markonikov rule from the given link
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In a solution, when the concentrations of a weak acid and its conjugate base are equal, ________.
I don't know the answer
In a solution, when the concentrations of a weak acid and its conjugate base are equal, the -log of the concentration of H+ and the -log of the Ka are equal.
What is Henderson-Hasselbalch equation ?This formula is frequently used to determine the pH of buffer solutions. A weak acid and its conjugate base make up buffer solutions.To find the pH of the buffer solution, we obtain the pKa of the weak acid and add it to the log of the concentration of the conjugate base divided by the concentration of weak acid. So whenever the concentration of the weak acid is equal to the concentration of the conjugate base, the pH of the buffer solution is equal to the pKa of the weak acid.To know more about buffer solutions you can refer to the link below:
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What would be the effect on the percentage recovery if not enough naoh were added in step 2 to react with both the unreacted hno3 and the cu2 present at the end of step 1?
The metallic cu⁺ will not be formed to calculate percentage recovery.
What is percentage recovery?
Most commonly "percent recovery" in chemistry refers to the quantity of recovered substance following a purifying procedure. This purification procedure could involve anything from completely separating a particular ingredient to removing a molecule totally.
If we do not completely react the HNO₃ in the reacion mixture, it will not fully reduce Cu ions which will not form all the metallic copper or if at all its formed the quantity will be very low that we will use to calculate the percentage recovey at the end.
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Examples of the surface area change the rate of chemical reactants applied in industry or products, materials?
What's the effect of surface area change
We know
Pressure is indirectly proportional to area
If surface area increases pressure decreasesIf pressure decreases volume increasesIf volume increases no of moles increasesSo production increases.When cyclohexene is subjected to mercuration in methanol and the resulting mixture is reduced with sodium borohydride, the major organic product is ________.
The primary organic product is a 1:1 mixture of enantiomeric ethers when cyclohexene is subjected to mercuration in methanol and the resulting mixture is reduced with sodium borohydride. The correct option is B.
What is cyclohexene?Cyclohexene is a hydrocarbon with the formula C₆H₁₀ . It has no color and a pungent scent. It is a necessary element in a number of industrial processes. It is not a stable compound.
One butadiene will exist in the s trans form rather than the s-cis form because the energy of s trans is lower than that of s-cis trans.
Thus, the correct option is B) a 1:1 mixture of enantiomeric ethers.
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The question is incomplete. Your complete question is given below:
A) a meso ether.
B) a 1:1 mixture of enantiomeric ethers.
C) a meso diol.
D) a 1:1 mixture of enantiomeric diols.
E) methoxycyclohexane.
A substance with a high [h ] would likely have which additional characteristics?
Answer:
Is [h] really [H]? What characteristics are mentioned?
Explanation:
A high [H} means high acid concentration.
_________ is generally an intermolecular force, and __________ is only an intramolecular attractive force.
Hydrogen bonding is generally an intermolecular force, and covalent bonding is only an intramolecular attractive force.
When a hydrogen atom gets bound to a powerfully electronegative atom and is in close proximity to some other electronegative atom with such a single electron pairs, a hydrogen bond occurs as an intermolecular force (IMF).
The three types of intermolecular interactions include dipole-dipole, London dispersion, and hydrogen bonding forces. Metal bonds, ionic bonds, as well as covalent bonds are mostly the three types of intramolecular forces.
Therefore, Hydrogen bonding is generally an intermolecular force, and covalent bonding is only an intramolecular attractive force.
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C4h5n(aq) h2o(l)⇌c4h5nh (aq) oh−(aq) express your answers as chemical formulas. enter your answers in the order given in the question separated by commas
In aqueous solutions, the hydrogen ion, also known as the hydronium ion, is a Bronsted-Lowry acid, while the hydroxide ion is a base as a result of the self-dissociation reaction.
[tex]C_4H_5N(aq) + H_2O(l)[/tex] ⇄ [tex]C_4H_5NH (aq) + OH^-(aq)[/tex]
[tex]Bronsted-\\Lowry Acid[/tex] [tex]Conjugate Acid[/tex]
Brønsted–Lowry acid-base theory:Any species that may transfer a proton (H+) to another molecule is a Brnsted-Lowry acid. Any species that can take a proton from another molecule is a Brnsted-Lowry base. In essence, a Brnsted-Lowry base is a proton acceptor (PA) and an acid is a proton donor (PD).
According to the Arrhenius theory, acids are defined as chemicals that dissociate in an aqueous solution to produce hydrogen ions (H+), whereas bases are defined as substances that produce OH (hydroxide ions).
The hydrogen ion, or hydronium ion, is a Brønsted–Lowry acid in aqueous solutions, and the hydroxide ion is a base, by virtue of the self-dissociation reaction.
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What is the binding energy of the electron in kj/molkj/mol? [note that keke = 12mv212mv2 and 1 electron volt (evev) = 1. 602×10−19j. 1. 602×10−19j. ]
The binding energy of the electron is 1.237 ×10^(-16) kj/ mol.
The given parameter
wavelength of photon,
λ = 0.999nm
= 0.999x10⁻⁹ m
K.E of emitted photon,
K.E = 940 ev
The binding energy of electron is calculated as follows:
From Einstein's mass defect equation=
ΔE = Δmc²
Also, from Einstein's photo electric equation=
E = Ф + K.E
Where;
Ф is binding energy of electron on metal surface.
The energy of on mole of electron, the emitted is calculated as:
[tex]E = hf =h \frac{c}{λ} = (6.626×10^{-34} ) × \frac{{3×10^{8} }}{0.999×10^{-9} } \\\\E= 1.989×10^{-16}[/tex]
The K.E of emitted electron in Joules is
[tex]K.E = 940 × \frac{1}{2} ×1.602 ×\ 10^{-19} J\\\\ = 0.752 × 10^{-16} J[/tex]
The binding energy is electron is calculated as:
[tex]Ф = E - K.E\\= (1.989 - 0.752) ×10^{-16}\\ =1.237 × 10^{-16} J[/tex]
Question: An X-ray photon of wavelength 0.999nm strikes a surface. The emitted electron has a kinetic energy of 940 eV. What isthe binding energy of the electron in kJ/mol? (KE=1/2mv2; 1 electron volt (eV) = 1.602 x10-19J)
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90cm3 of 1 m hcl solution and 10cm3 of 0.5 m naoh solution are mixed together. the concentration of hcl contained in the final solution
The concentration of HCl contained in the final solution is 0.95 M.
Calculation:Here, we use the dilution formula, which is,
M (V₁ + V₂) = M₁V₁ + M₂V₂
where,
M = resultant concentration
M₁ = concentration of HCl
V₁ = volume of HCl
M₂ = concentration of NaOH
V₂ = volume of NaOH
Given,
M₁ = 1 M
V₁ = 90 cm³ = 90 mL
M₂ = 0.5 M
V₂ = 10 cm³ = 10 mL
To find,
M =?
Put the values in the above formula,
M (V₁ + V₂) = M₁V₁ + M₂V₂
M (90 + 10) = (1 × 90) + (0.5 × 10)
M × 100 = 90 + 5
M × 100 = 95
M = 95/100
M = 0.95 M
Therefore, the concentration of HCl contained in the final solution is 0.95 M.
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Why is the vapor pressure of a warm lake higher than the vapor pressure of a cold lake?
Answer:
Explanation:
Warm lake vapor pressure is higher than cold lake vapor pressure because it evaporates more quickly. In other words, as the temperature of warm water increases, the kinetic energy of the warm water molecule also increases. As the kinetic energy of the warm water molecule increases, the number of molecules conversion into a vapor also increases, thereby increasing the vapor pressure of warm water.
Answer:
B.
Warm water evaporates more quickly.
Explanation:
i got it right on edmentum!!
Hemoglobin has a much greater affinity for carbon monoxide than oxygen. which principle explains why a hyperbaric chamber (containing high levels of oxygen) can treat carbon monoxide poisoning?
Hemoglobin has a much greater affinity for carbon monoxide than oxygen. In a hyperbaric chamber (containing high levels of oxygen) can treat carbon monoxide poisoning, by displacing carbon monoxide from Hemoglobin competitively.
Hemoglobin has a much greater affinity for carbon monoxide than oxygen. This is because, a coordinate bond is formed with Carbon monoxide and Haem structure of the hemoglobin.
Carbon monoxide with Hemoglobin is called as Carboxy haemoglobin.
Presence of oxygen displaces the Carbon monoxide with Hemoglobin that is formed due to poisoning.
Hyperbaric chamber is a chamber which contains pure oxygen in a chamber. The atmospheric pressure is kept about three to four times than the normal, such that the replacement of Carbon monoxide from Haem can occur as fast as possible since this reduces the half life of the Carboxy haemoglobin.
It is advisable not to treat Carbon monoxide poisoning yourself.
Hyperbaric oxygen is used to treat the following conditions as well:
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What is the concentration of a 57. 10 ml solution of hbr that is completely titrated by 35. 00 ml of a 0. 200 m naoh solution?
The concentration of 57.10 ml solution is Hbr that is completely titrated is 0.326.
What is concentration?Concentration is the total amount of substance in one unit of a solution. The concentration is more when there is less solvent.
Concentration = mass / volume
From the formula of dilution M1V1 = M2V2
Given that the volume 1 is 57.10
Volume 2 is 35.00
Mass is 0.200.
M2 is ?
Putting the values in the equation:
0.200 x 57.10 = m2 x 35.00 = 0.326
m2 = 0.326
Thus, the concentration of a 57. 10 ml solution of Hbr is 0.326 m.
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Calculate the molar solubility of silver(i) bromate with ksp = 5. 5×10-5. also, convert the molar solubility to the solubility. the molar solubility is ___________ and the solubility is ____________
The molar solubility is 7.4×[tex]10^{-3}[/tex] M and the solubility is 7.4×[tex]10^{-3}[/tex] g/L .
Calculation ,
The dissociation of silver bromide is given as ,
[tex]AgBr[/tex] → [tex]Ag ^{+}[/tex] + [tex]Br^{-}[/tex]
S
- S S
Ksp = [[tex]Ag ^{+}[/tex] ] [ [tex]Br^{-}[/tex] ] = [S] [ S ] = [tex]S^{2}[/tex]
S = √ Ksp = √ 5. 5×[tex]10^{-5}[/tex] = 7.4×[tex]10^{-3}[/tex]
The solubility =7.4×[tex]10^{-3}[/tex] g/L
The molar solubility is the solubility of one mole of the substance.
Since , one mole of [tex]AgBr[/tex] is dissociates and form one mole of each [tex]Ag ^{+}[/tex] and [tex]Br^{-}[/tex] ion . So, solubility is equal to molar solubility but unit is different.
Molar solubility = 7.4×[tex]10^{-3}[/tex] mol/L = 7.4×[tex]10^{-3}[/tex] M
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The chemical process of food breakdown is called ________.
a) absorption
b) ingestion
c) digestion
d) secretion
The chemical process of food breakdown is called digestion.
Based about how food is digested, mechanical digestion versus chemical digestion is the two main types of catabolism. The digestive system's four important processes are motility, digesting, absorption, as well as secretion.
Digestion enzymes break down food as it moves from the mouth through our digestive system, transforming it into more easily absorbed nutrients. Chemical digestion would be the term for this disintegration. Amino acids as well as reducing sugars undergo a chemical reaction when food is processed and cooked at a high temperature, creating various flavors and brown colors.
Therefore, the chemical process of food breakdown is called digestion.
Hence, the correct answer will be option (c).
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How would you separate a mixture of 4-tert-butylphenol and 2- chlorobenzoic acid? Explain the detailed steps including the choice of solvent and why this solvent would be use.
The a mixture of 4-tert-butylphenol and 2- chlorobenzoic acid is separate by the by using bicarbonate solvent.
When solution of bicarbonate is added in mixture of 4-tert-butylphenol and 2- chlorobenzoic acid then 2- chlorobenzoic acid form a carboxylate ion whereas 4-tert-butylphenol is underacted and filtered out.
Since, only 2- chlorobenzoic acid which is acid is convert into its conjugate base by solution of bicarbonate in mixture of 4-tert-butylphenol and 2- chlorobenzoic acid .
However, phenol is less acidic than carboxylic acid. Both phenol and carboxylic acid is soluble in organic solvent . At that point as the phenol isolates as an oil, one needs to cool the blend in an ice shower to encourage crystallization
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Why do night bird have extraordinary night vision
Answer:
The low light eye sight depends on the rod cells of the eye,and the birds have more amount of rod cell in their eyes, that's why they have an extraordinary night vision
A student makes up 2 l of a 3. 0 m aqueous solution of hbr. to this solution she adds 1 l of a 4 m naoh solution. what is the ph of the resulting solution?
A student makes up 2 l of a 3. 0 m aqueous solution of HBr. to this solution she adds 1 l of a 4 m NaOH solution, then the pH of the resulting solution is 13.83.
What is normality?Normality is defined as the ratio of equivalent mass of compound to the volume of solution in litre.
N1 is the normality of HBR = 3m
N2 is the normality of NaOH = 4m
V1 is the volume of the HBr = 2l
V2 is the volume of the NaOH = 1l
V is the total volume of solution = V1 + V2 = 2l +1l
= 3l
Normality of the solution = N
As we know that,
N1V1 - N2V2 = NV
3 × 2 – 4 × 1 = N × 3
6 – 4 = N – 3
N = 2/3 = 0.67 m
(OH-) = N = 0.67 m
Since normality of NaOH is greater than BR . Hence the resulting solution is alkaline.
pOH = -log[OH-]
POH = - log (0.67) = 0.17
As we know that,
PH + pOH = 14
pH = 14 – 0.17
= 13.83
Thus, we calculate that the pH of the resulting solution is 13.83.
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Prove the following:V=U + AT
We know that,
acceleration (a) = final velocity(V)-initial velocity(U)/ Time taken(T)
When adjusted for any changes in δh and δs with temperature, the standard free energy change δg∘t at 600 k is equal to 1. 4×10^5j/mol. Calculate the equilibrium constant at 600 k.
The standard free energy change ΔG° at 600 K is equal to 1. 4×[tex]10^5[/tex]J/mol then the equilibrium constant at 600K is 0 .
Calculation ,
ΔG° = - RT㏑Kp
Where ΔG° = standard free energy change = 1. 4×[tex]10^5[/tex]J/mol
R = universal gas constant = 8.3 J / K mol
T = temperature = 600K
Kp = equilibrium constant
Now putting the value of all data in equation (i) we get ,
1. 4×[tex]10^5[/tex]J/mol = - 8.3 J / K mol × 600K ㏑Kp
- 1. 4×[tex]10^5[/tex]J/mol /8.3 J / K mol × 600K = ㏑Kp
㏑Kp = - 6972×[tex]10^5[/tex]
Kp = 0
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The _______________________________ css3 property can be used to create multiple columns of text within a single element.
The column count property can be used to create multiple columns of text within a single element.
What type of reaction is a grignard reaction? What is the critical intermediate (which can be isolated and enables the final product)?
Organometallic Chemical reaction is a Grignard reaction. The critical intermediate (which can be isolated and enables the final product) is the formation of a carbon bond.
The Grignard Reaction is an organometallic chemical reaction that mostly produces C-C bonds. When organic molecules are combined with the Grignard reagent, the Grignard reaction occurs (Rmgx).
The Grignard Reaction is the conversion of an aldehyde or ketone into secondary or tertiary alcohol by the addition of an organomagnesium halide (Grignard reagent). A primary alcohol is produced when formaldehyde and oxygen react.
Alcohol and water molecules have acidic hydrogen atoms that Grignard reagents quickly react with. A proton substitutes the halogen in a Grignard reaction with water, producing an alkane as the end result. Therefore, the Grignard reagent offers a two-step process for changing a haloalkane into an alkane.
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halogens are active nonmetals why
Answer:
Halogens are among the most active nonmetals due to their electron configuration and number of valence electrons.
type of molecule is shown below?
H
O=C
H
Answer:
Carbonyl
Explanation:
While the diagram is slightly unclear, the molecule most likely being shown is a carbonyl. A molecule is a carbonyl when there is a carbon double-bonded to an oxygen.
What mass of cu(s)cu(s) is electroplated by running 14. 5 aa of current through a cu2 (aq)cu2 (aq) solution for 4. 00 hh?
Mass of copper would be=92.46 g
I = Current = 19.5 A
t = 4 hours =4×60×60=14400 s
F = Faraday constant = 96485.33 C/mol
Molar mass of copper = 63.546 g/mol
A charge is given by
Q=19.5×14400=280880 C
Moles of electrons are given by Q/F=280880/96485.33=2.91 mol
Moles of copper is=1/2×2.91=1.455 mol
Mass of copper would be=1.455×63.546=92.46 g
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The mass of Copper electroplated is 68.76 g
What is electroplating?The process of plating a metal onto another is known as electroplating.
It is often used to prevent corrosion of metal or for the decorative purposes
In this process, electric current is passed through an aqueous solution containing dissolved cations.
The dissolved cations are reduced developing a thin metal coating on the electrode.
At cathode,
[tex]Cu^{2+}(aq) + 2e^-\rightarrow Cu(s)[/tex]
Current, I = 14.5 A
Time, t = 4 hrs = 4×60×60 = 14400 sec
Charge, q = It = 14.5×14400= 208800 C
Copper metal deposited by 2×96487 C = 63.55 g
Copper metal deposited by 208800 C = [tex]\frac{63.55 \times208800}{2\times96487}[/tex]
= 68.76g
Hence, The mass of Copper electroplated is 68.76 g
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Select the correct boxes. which two elements have the same number of valence electrons?
Carbon and silicon have same number of valance electrons which is 4 electrons
Now, Barium is a 2nd group element. So, it has two valance electrons.
Silicon is a 16th group element and it has 4 valance electrons as does the carbon. This is because they both stay in the same group in the periodic table.
Neon is a noble gas which has 8 valance electrons and stays in the 18th group.
Therefore, carbon and silicon have same number of valance electrons which is 4 electrons.
What are Valence electrons ?The electrons in an atom's outermost shell, or energy level, are called valence electrons. For instance, the valence electrons of oxygen are six, with two in the 2s subshell and four in the 2p subshell.
The number of valence electrons for neutral atoms is the same as the number of the atom's main group. A periodic table element's column can be used to determine its main group number. For instance, carbon, which belongs to group 4, has four valence electrons. Group 6 oxygen contains six valence electrons.Learn more about Valence electrons here:
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Read the chemical equation. n2 3h2 → 2nh3 using the volume ratio, determine how many liters of nh3 is produced if 1.2 liters of h2 reacts with an excess of n2, if all measurements are taken at the same temperature and pressure?
0.8 liters of NH₃ is produced.
What is Chemical equation?A chemical equation is a symbolic representation of a chemical reaction in the form of symbols and formulae, where the reactant entities are given on the left and the product entities are given on the right, with a plus sign separating the entities in both the reactants and the products and an arrow pointing in the direction of the products to indicate the reaction's direction. The absolute values of the stoichiometric numbers are shown as coefficients next to the symbols and formulas of the entities. Jean Beguin drew the first chemical equation in 1615.
pressure - The SI unit for pressure is the pascal (Pa), which is equal to one newton per square metre (N/m2) of force per unit area of surface. An object's pressure is inversely proportional to the area it is pressing on and inversely proportional to the force it applies.
Given chemical reaction is:
N₂ + 3H₂ → 2NH₃
From the stoichiometry of the reaction, it is clear that:
3 liters of H₂ = produce 2 liters of NH₃
1.2 liters of H₂ = produce 2/3 × 1.2 = 0.8 liters of NH₃
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What is the IUPAC name of the compound shown here?
Answer:
2-methylpropanoic acid
Explanation:
no probs chief
