a metal that crystallizes in a bcc unit cell with an atomic radius of 0.130 nm and with a molar mass of 50.00 g/mol must have what density in g/cm3? (1 x 107 nm is 1 cm.)
Answers
The given atomic radius is 0.130 nm. Since 1 x 107 nm is 1 cm, therefore 0.130 nm = 0.130 × 10⁻⁷ cm = 1.30 × 10⁻⁸ cm. Molar mass of the metal is 50.00 g/mol.
The volume of the bcc unit cell can be determined using the formula for the volume of a cube: V = a³. Where a is the edge length of the unit cell. For a bcc unit cell, the relationship between the edge length and the atomic radius is given as follows: a = 4r/√3Substituting the value of atomic radius, r, we get: a = 4(1.30 × 10⁻⁸)/√3a = 3.00 × 10⁻⁸ cm. The volume of the bcc unit cell is: V = a³ = (3.00 × 10⁻⁸)³ = 2.70 × 10⁻²⁴ cm³.
The density of the metal can be calculated using the formula: density = (mass of unit cell)/(volume of unit cell). Since there is one atom per unit cell for a bcc structure: mass of unit cell = molar mass/Avogadro's number mass of unit cell = 50.00/6.022 × 10²³= 8.31 × 10⁻²²g. Therefore, density of the metal is: density = (8.31 × 10⁻²²)/(2.70 × 10⁻²⁴)= 3.08 g/cm³ (rounded to two decimal places). Therefore, the density of the metal that crystallizes in a bcc unit cell with an atomic radius of 0.130 nm and with a molar mass of 50.00 g/mol is 3.08 g/cm³.
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Related Questions
Suppose the interaction between two atoms by the Lennard-Jones potential: ULJ = B/r^12 - A / r^6 where the values of A and B are known to be A = 10^-77 J x m^6 and B = 10^-134 J x m^12.
What does the Lennard-Jones potential predict for the separation r=r eq
hen the energy is at the minimum (equilibrium) value, U min. What is the u min fot this interaction at T=298 K ? What is the ratio of U min to the purely attractive van der Waals component of the interaction potential at r eq.
What is the ratio of r eq to r 0 defined by u(r 0 )=0. 4. What is the ratio of r s to r 0 , where r s is the separation where the magnitude of the (attractive adhesion) force is maximum, F max . What is the value for F max between the two atoms?
Answers
a) The Lennard-Jones potential predicts the separation r_eq at the minimum energy U_min.
b) The U_min for this interaction at T=298 K is the value obtained from the Lennard-Jones potential equation when r=r_eq.
c) The ratio of U_min to the purely attractive van der Waals component of the interaction potential at r_eq can be calculated by comparing the attractive part (-A/r^6) to the total potential energy U_min.
d) The ratio of r_eq to r_0, where u(r_0)=0.4, can be determined by finding the value of r_eq where the potential energy is equal to 0.4 times the total potential energy at r=r_0.
e) The ratio of r_s to r_0, where r_s is the separation where the magnitude of the attractive adhesion force is maximum, can be determined by finding the value of r where the derivative of the potential energy with respect to r is equal to zero.
f) The value of F_max between the two atoms can be obtained by taking the negative derivative of the potential energy equation with respect to r and evaluating it at r=r_s.
a) The Lennard-Jones potential provides information about the relationship between energy and separation between two interacting atoms.
At the minimum energy (U_min), the potential predicts the separation r_eq, which corresponds to the equilibrium distance between the atoms. This is the distance at which the energy of the system is at its lowest point.
b) To determine the value of U_min at a given temperature (T=298 K), you can substitute the equilibrium separation r_eq into the Lennard-Jones potential equation and calculate the resulting energy value.
This will give you the U_min for the interaction.
c) The Lennard-Jones potential consists of two components: an attractive component (-A/r^6) and a repulsive component (B/r^12).
The ratio of U_min to the purely attractive van der Waals component of the interaction potential at r_eq can be calculated by comparing the magnitude of the attractive component to the total potential energy at the equilibrium separation.
This ratio provides insights into the relative contribution of the attractive force to the overall potential energy at equilibrium.
d) The ratio of r_eq to r_0 can be determined by finding the value of r_eq where the potential energy is equal to 0.4 times the total potential energy at r=r_0.
In other words, you need to solve the Lennard-Jones potential equation for r_eq when the potential energy is equal to 0.4 times the potential energy at r=r_0.
e) The ratio of r_s to r_0 is obtained by finding the value of r where the magnitude of the attractive adhesion force is maximum.
This can be determined by finding the separation r where the derivative of the potential energy equation with respect to r is equal to zero.
The value of r_s represents the separation at which the attractive force between the atoms is strongest.
f) The value of F_max between the two atoms can be obtained by taking the negative derivative of the Lennard-Jones potential energy equation with respect to r and evaluating it at r=r_s.
This will give you the magnitude of the maximum attractive adhesion force between the atoms.
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HELP PLEASE !!
Name the products formed When Sulfuric acid + sodium hydroxide *
Sodium Sulfate + water
Sodium Sulfate + hydrogen gas
Sodium Nitrate + Water
Answers
Explanation:
Sodium Sulfate + water
hope it helps ya
PDB CODE: 1MRY SEQUENCE POSITION: 229 AMINO ACID MUTATED TO: ARG In the PDB protein, you were given the sequence position of a particular amino acid that is mutated to another amino acid. Draw the structure of the two amino acids. Describe why this position in your protein is important and outline the effects of the mutation will have on the 3-D structure and the function of your protein.
Answers
The mutated amino acid at position 229 is arginine (Arg), and its substitution can potentially disrupt the 3D structure and alter the function of the protein due to changes in side chain properties and interactions.
Structure of the Amino Acids:
The wild-type amino acid at position 229 is not specified, so the structure cannot be provided.
The mutated amino acid is arginine (Arg), which has a side chain containing a positively charged guanidinium group.
Importance of the Position:
The specific position 229 in the protein sequence may be functionally significant, such as being involved in protein-protein interactions, binding sites, catalytic activity, or structural stability.
Without detailed knowledge of the protein, its function, and its structural context, it is difficult to determine the exact importance of this specific position.
Effects of the Mutation on Structure and Function:
The substitution of an amino acid at position 229 from the original to arginine can have various effects on protein structure and function.
Arginine's larger and positively charged side chain may introduce steric clashes or alter electrostatic interactions within the protein structure.
The mutation can potentially disrupt local or global protein folding, stability, or conformational changes, affecting its overall 3D structure.
The functional consequences of the mutation depend on the specific role of the amino acid at position 229, which can include changes in protein-protein interactions, enzymatic activity, substrate binding, or signal transduction pathways.
It is crucial to analyze the protein's structural context, available experimental data, and computational modeling techniques to gain a more accurate understanding of the specific effects of the mutation on the protein's structure and function in the given context.
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Cocaine is a widely abused, addicting drug. Cocaine is usually obtained as its hydrochloride salt (cocaine hydrochloride) but can be converted to crack (the neutral molecule) by treatment with base. Which of the two compounds here has a higher boiling point? Which is more soluble in water? How does the relative solubility explain why crack is usually smoked but cocaine hydrochloride is injected directly into the bloodstream?
Answers
The differences in boiling point and solubility between cocaine hydrochloride and crack are due to their distinct molecular structures and intermolecular forces. These differences have important implications for how they are used and absorbed in the body, explaining why cocaine hydrochloride is typically injected while crack is usually smoked. However, it is important to note that both forms of cocaine are highly addictive and can have serious negative effects on a person's health and well-being.
Cocaine is a powerful stimulant drug that is widely abused and highly addictive. It is typically obtained as its hydrochloride salt, cocaine hydrochloride, but can also be converted into a neutral molecule known as crack through treatment with base. Both forms of cocaine have distinct properties that influence their use and effects on the body.
When considering the boiling points of cocaine hydrochloride and crack, it is important to note that the boiling point of a substance is directly related to its intermolecular forces. Intermolecular forces are the attractive or repulsive forces that exist between molecules and determine how tightly they are held together. Cocaine hydrochloride has a higher boiling point than crack because it forms stronger intermolecular forces due to its ionic nature. Cocaine hydrochloride contains polar covalent bonds and ionic bonds, which contribute to its high boiling point.
In terms of solubility in water, cocaine hydrochloride is more soluble than crack. This is because cocaine hydrochloride is an ionic compound that can dissolve in water due to the attraction between the positively charged hydrogen ions in water and the negatively charged chloride ions in cocaine hydrochloride. Crack, on the other hand, is a neutral molecule that is less polar and has weaker intermolecular forces, making it less soluble in water.
The relative solubility of cocaine hydrochloride and crack explains why they are typically used in different ways. Cocaine hydrochloride is often injected directly into the bloodstream because it is highly soluble in water and can easily dissolve in the body's fluids. This allows it to quickly enter the bloodstream and reach the brain, resulting in a rapid onset of its effects. Crack, on the other hand, is usually smoked because it is less soluble in water and cannot be easily dissolved in the body's fluids. Smoking crack allows it to be rapidly absorbed through the lungs and into the bloodstream, where it can quickly reach the brain and produce its effects.
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What are scope 4 carbon emissions?
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The emission of carbon that are avoided are called scope 4 Carbon emission.
The scope for Carbon emissions are those emissions of carbon which are reduced or avoided.
They can also be defined as the reductions that have occurred outside of a products complete cycle or the value chain.
The product cycle are those which are related to the manufacturing cycle of the carbon related products.
Collectively all the greenhouse emissions that are avoided or which are reduced to a very significant level are known as scope 4 emissions.
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how is specifit heat defined? how will you find the specific heat capacity of water in activity 2-2
Answers
Specific heat is defined as the amount of heat energy required to raise the temperature of one unit of mass of a substance by one degree Celsius (or Kelvin). It is denoted by the symbol c and has units of J/(g·°C) or J/(g·K).
To find the specific heat capacity of water in Activity 2-2, you can perform an experiment where a known mass of water is heated to a known temperature and then allowed to cool down.
The amount of heat energy gained by the water can be calculated using the equation Q = mcΔT, where Q is the heat energy gained, m is the mass of water, c is the specific heat capacity of water, and ΔT is the change in temperature of the water.
Using the known values of Q, m, and ΔT, you can rearrange the equation to solve for c, which will give you the specific heat capacity of water. The value of c for water is approximately 4.184 J/(g·°C) at room temperature, but may vary slightly with temperature.
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3. The hydroxide-ion, [OH-], concentration in a detergent solution is 1.0 x 10-3 M. What is [H+] concentration in the detergent solution?
A) 1.0 x 10^-11 M.
B) 1.0 x 10^-9 M.
C) 1.0 M
D) 0.001 M
Answers
Answer:
c
Explanation:
h
What is the standard free energy change at 25 C Cr" (aq) + Zn(s) → Cufs) + Zn2+ (aq) anode (oxidation): Zn(s) → Zn2+ (aq) + 2e- cathode (reduction): Cu2+ (aq) + 2e-→Cu(s) Eg .o 0.34V Select the correct answer below O-10601 106,1 | 0 212.3 0-212.
Answers
The standard free energy change (ΔG°) for the given reaction is approximately 65.6 kJ/mol.
To calculate the standard free energy change (ΔG°) for a reaction, we can use the equation:
ΔG° = -nFΔE°
Where:
ΔG° = standard free energy change
n = number of electrons transferred in the balanced redox equation
F = Faraday's constant (96,485 C/mol)
ΔE° = standard cell potential (E°cathode - E°anode)
In this case, the balanced redox equation is:
Anode (oxidation): Zn(s) → Zn²⁺(aq) + 2e⁻
Cathode (reduction): Cu²⁺(aq) + 2e⁻ → Cu(s)
Given that E° = 0.34 V, we can calculate the standard free energy change as follows:
n = number of electrons transferred = 2 (from the balanced equation)
ΔE° = E°cathode - E°anode = 0.00 V - 0.34 V = -0.34 V
Now, let's substitute the values into the equation:
ΔG° = -nFΔE°
ΔG° = -(2)(96,485 C/mol)(-0.34 V)
Calculating:
ΔG° = 65,618.8 C·V/mol
ΔG° ≈ 65.6 kJ/mol
Therefore, the standard free energy change (ΔG°) for the given reaction is approximately 65.6 kJ/mol.
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FILL IN THE BLANK in each of these examples, the chemical substance is secreted from a cell and delivered to another cell by way of ____________ .
Answers
If you were to prepare a 3.5% solution of sodium bicarbonate in water that required the total mass of the solution to be 50 g, what would the mass of the sodium bicarbonate be?
Answers
Given data:
- mass % = 3.5%
- mass of solution = 50g
- mass of solute (sodium bicarbonate) = ?
In order to find the mass of solute we must use the next formula
\(mass\text{ \%}=\frac{mass\text{ of solute}}{mass\text{ of solution }}\cdot100\text{ \%}\)Since we need the mass of solute, we must solve the equation for mas of solute
\(\text{mass of solute}=\frac{mass\text{ \%}\cdot mass\text{ of solution}}{100\text{ \%}}\)Now, we must replace the values in the equation
\(\text{mass of solute }=\frac{3.5\text{ \%}\cdot50g}{100\text{ \%}}\)Finally, we must simplify
\(\text{mass of solute}=1.75g\)ANSWER:
The mass of the sodium bicarbonate is 1.75 g
a hypothetical alloy (a-b) of composition a at some temperature is found to consist of mass fractions of 0.5 for both alpha and beta phases. if the composition of the beta phase is , what is the composition of alpha phase?
Answers
The composition of the alpha phase is -0.125
Let's assume that the alloy is a binary system consisting of components A and B, and that the alpha and beta phases have compositions of A1B1 and A2B2, respectively. Since the mass fractions of alpha and beta phases are both 0.5, we have:
mass fraction of A in alpha phase = mass fraction of A in beta phase = x
mass fraction of B in alpha phase = 1 - x
mass fraction of B in beta phase = 0.25
The overall composition of the alloy is given as a, which can be expressed as:
a = x + 0.5*(A2B2)
Since we know the composition of the beta phase A2B2, we can solve for x as:
x = a - 0.5*(A2B2)
Substituting the given values, we get:
x = a - 0.5*(0.25)
= a - 0.125
Therefore, the composition of the alpha phase is:
A1B1 = x = a - 0.125
Note that this assumes ideal behavior, and in real alloys, deviations from ideality may result in non-ideal phase compositions.
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pleaseeeeeeeeeee someone help urgent we are writing a test tmr can some one please explain subatomic particles to me...
Answers
Answer:
n physical sciences, subatomic particles are smaller than atoms. They can be composite particles, such as the neutron and proton; or elementary particles, which according to the standard model are not made of other particles. Particle physics and nuclear physics study these particles and how they interact.
Explanation:
a particle smaller than an atom (e.g., a neutron) or a cluster of such particles (e.g., an alpha particle).
chemical weathering processes are particularly effective on limestone landscapes forming
Answers
Chemical weathering processes are particularly effective on limestone landscapes, resulting in the formation of unique landforms and features.
Limestone, primarily composed of calcium carbonate, is highly susceptible to chemical reactions with various agents present in the environment. Through the process of carbonation, limestone can undergo chemical weathering when it reacts with carbonic acid, a weak acid formed from the dissolution of carbon dioxide in water. This reaction leads to the gradual dissolution of calcium carbonate, causing the limestone to be eroded and forming distinctive landforms such as caves, sinkholes, and underground drainage systems. Over time, the continuous dissolution of limestone by carbonic acid can create extensive underground cave networks. Another significant chemical weathering process affecting limestone landscapes is solution weathering. In this process, water containing dissolved acids, such as sulfuric acid from acid rain, infiltrates the limestone. The acidic water reacts with calcium carbonate, resulting in the breakdown and removal of the rock material. This chemical reaction can lead to the formation of karst topography, characterized by rugged terrain, sinkholes, and disappearing streams.
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Chromium forms a complex with diphenylcarbazide whose molar absorptivity is 4.17*10^4 at 540nm. Calculate the absorbance of a 7.68*10^-6 M solution of the complex at 540nm when measured in a 1.00cm cell and the transmittance of the solution.
Answers
Answer:
0.32 liters/mole cm.
Explanation:
According to Beer Lambert's law;
A= εcl
ε = molar absorptivity
c= concentration
l= path length
A= 4.17*10^4 × 7.68*10^-6 × 1
A= 0.32 liters/mole cm.
What is true when a reaction has reached equilibrium?
The reaction is faster in the reverse direction.
The reaction rate is equal in both directions.
The reaction has stopped.
The reaction is faster in the forward direction.
Answers
Answer:
Explanation:
The rate of the forward reaction is less than the rate of the reverse reaction. ... The reaction rates of the forward and reverse reactions are equal
Calcium propionate [Ca(CH₃CH₂COO)₂; calcium propanoate] is a mold inhibitor used in food, tobacco, and pharmaceuticals.(a) Use balanced equations to show whether aqueous calcium propionate is acidic, basic, or neutral.
Answers
We anticipate that the resulting aqueous solution will be basic.
What is the definition of a weak acid?Weak acids are those that do not dissociate completely in solution. A weak acid is defined as any acid that is not a strong acid. A weak acid's strength is determined by how much it dissociates; the more it dissociates, the stronger the acid.
What exactly is a conjugate base?A conjugate base is the base member, X-, of two compounds that transform into one another by gaining or losing a proton. In a chemical reaction, the conjugate base has the ability to gain or absorb a proton.
According to the given information:Calcium propionate [Ca(CH₃CH₂COO)₂
We know that Calcium propionate dissolves completely in water.
So,
Ca(CH\(_3\)CH\(_2\)+COO)\(_2\)→Ca\(^2^+\) +2CH\(_{3}\)CH\(_2\)COO−
Water can protonate the propionate anion. When everything is balanced,
CH\(_3\)CH\(_2\\\)COO−+H2O⇌CH\(_3\)CH\(_2\)COOH+OH−
We anticipate that the resulting aqueous solution will be basic.
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Convert 870 cig to kg answer with unit.
Answers
what will be the result of the reaction
(CH3COO)2+redP +Cl2
Answers
Answer:
(CH3COO)2 + redP + Cl2 → ClCH2COOH + HCl
Explanation:
This is an example of halogenation of carboxylic acids at alpha carbon atom. In this reaction, red phosphorus and chlorine are treated with carboxylic acids having alpha hydrogen atom followed by hydrolysis to form alpha chloro carboxylic acid.
Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of lithium sulfide and copper (II) nitrate are mixed.a. 2 Li+(aq) + S2-(aq) + Cu2+(aq) + 2 NO3-(aq) → CuS(s) + 2 Li+(aq) + 2 NO3-(aq)B) Li+(aq) + SO42-(aq) + Cu+(aq) + NO3-(aq) → CuS(s) + Li+(aq) + NO3-(aq)C) Li+(aq) + S-(aq) + Cu+(aq) + NO3-(aq) → CuS(s) + LiNO3(aq)d) 2 Li+(aq) + S2-(aq) + Cu2+(aq) + 2 NO3-(aq) → Cu2+(aq) + S2-(aq) + 2 LiNO3(s)E) No reaction
Answers
The complete ionic equation for the reaction that occurs when aqueous solutions of lithium sulfide and copper (II) nitrate are mixed is as follows: 2 Li+(aq) + S2-(aq) + Cu2+(aq) + 2 NO3-(aq) → CuS(s) + 2 Li+(aq) + 2 NO3-(aq)
It is important to write the complete ionic equation when aqueous solutions of lithium sulfide and copper (II) nitrate are mixed. The reaction of lithium sulfide with copper (II) nitrate is a double displacement reaction. Lithium sulfide reacts with copper (II) nitrate to form copper sulfide and lithium nitrate.
The balanced chemical equation for the reaction is given as follows:Li2S(aq) + Cu(NO3)2(aq) → CuS(s) + 2 LiNO3(aq)The complete ionic equation can be written by representing all the ions in the aqueous solutions as dissociated ions.
Thus, the complete ionic equation for the reaction that occurs when aqueous solutions of lithium sulfide and copper (II) nitrate are mixed is as follows:2 Li+(aq) + S2-(aq) + Cu2+(aq) + 2 NO3-(aq) → CuS(s) + 2 Li+(aq) + 2 NO3-(aq.
)In the above equation, the lithium and nitrate ions do not take part in the reaction and are present in the same form in the reactant and product side. Hence, they are called spectator ions.
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Calculate the concentration of [Hg^2+], [I-] and [K+] in 0. 05M solution of K2[HgI4]. (Kinst. =1. 48∙10^-30)
Answers
The concentration of [Hg2+] is 2.02 x\(10^-11 M\) and the concentration of [I-] is 4.04 x\(10^{11}\). The concentration of [K+] in the solution is equal to its initial concentration, which is 0.05 M.
The solubility product constant expression for K2[HgI4] can be written as follows:
Ksp =\([Hg2+][I-]^2\)
We can use stoichiometry to determine the initial concentration of [Hg2+] and [I-] in the solution:
0.05 M K2[HgI4] = 0.05 M K+ = 0.025 M \(HgI4^2-\)
From the formula of K2[HgI4], we can see that each mole of K2[HgI4] contains 2 moles of K+ and one mole of \(HgI4^2-\) . Therefore, the initial concentration of \(HgI4^2-\)is 0.025 M.
We can assume that x is the concentration of [Hg2+] and 2x is the concentration of [I-] that dissociates from \(HgI4^2-\). Therefore, the equilibrium concentrations are:
[Hg2+] = x
[I-] = 2x
Using the solubility product constant expression and substituting the concentrations:
Ksp =\([Hg2+][I-]^2\)
1.48 x\(10^-30 = x(2x)^2\)
x = 2.02 x\(10^-11 M\)
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please help!
List 2 ways you can add calcium to your daily diet to insure strong, hard bones.
Answers
The greatest strategy to increase your diet's calcium intake is to eat actual food. Real food is fished or grown. clams, sardines, salmon, broccoli, squash, white beans, sesame seeds, and carrots. (Cow milk is designed for nursing cows; I do not advise consuming dairy products.) Real food is scrumptious and healthy to eat. Your body gets all the nutrients it needs from food to stay strong, healthy, and active. Along with consuming actual food, you might want to think about cutting back on your regular intake of alcohol and coffee. Your bones lose calcium as a result of such things. Additionally, too much sugar depletes your body of nutrients and wrecks havoc on your pancreas. Your greatest chances for feeling the healthiest are fruits, vegetables, seafood, seeds, and nuts.
For calcium, dairy products are the best bet. However, there is another point I want to make. The intestinal absorption of calcium depends heavily on vitamin D. For greater calcium absorption, make sure you get enough vitamin D in your diet.
Thank you,
Eddie
why are fish lucky that water particles expand as they hit a temperature of 0°c?
Answers
Answer:
it is a result of hydrogen bonds present within water molecules.
Explanation:
when the water is transformed to ice at zero degrees Celsius, the water molecules are in crystal lattice in a structure that has a lot of empty space around each molecule.
For water, the value for the latent heat of vaporization is 6.8 times greater than the latent heat of fusion. Imagine we were adding heat at a constant rate to a block of ice in a beaker on a hot plate, and it took 4 minutes for the ice to melt completely. How long would it take, after the water started boiling, for the beaker to be completely empty (the liquid water totally converted to water vapor)?
Answers
Answer:
Time of vaporization = 0.588 minutes
Explanation:
The latent heat of fusion is the heat required to change the substance from solid (ice) to liquid completely, without further increase in temperature.
The latent heat of vaporization is the heat required to change a liquid to gas completely, without an increase in temperature.
Latent heat of vaporization = 6.8 times Latent heat of fusion
This means that the time it takes for the latent heat of vaporization to complete vaporization is 6.8 times lesser than the time it takes for the latent heat of fusion to complete fusion
Time of vaporization = 6.8 times lesser than time of fusion
Time of vaporization = (time of fusion) ÷ 6.8
where: Time of fusion = 4 minutes
∴ Time of vaporization = 4 ÷ 6.8
Time of vaporization = 0.588 minutes
What volume of a 10. 00 mol/L acetic acid stock solution is required to make
775. 0 ± 0. 5 mLof a 2. 500 mol/L acetic acid solution? How much water must you
add to make this standard dilution?
Answers
Thus, the volume of water required is approximately (775.0 mL - 193.75 mL) ≈ 581.25 mL.
We are given the following information: the concentration of the stock solution (C1) is 10.00 mol/L, the volume of the stock solution (V1) is unknown, the concentration of the desired solution (C2) is 2.500 mol/L, and the volume of the desired solution (V2) is 775.0 ± 0.5 mL.
Using the dilution formula, C1V1 = C2V2, we can rearrange it to solve for V1. Thus, V1 = (C2V2) / C1. Substituting the given values, we have V1 = (2.500 mol/L * 775.0 mL) / 10.00 mol/L.
By performing the calculation, we find that V1 ≈ 193.75 mL. Therefore, approximately 193.75 mL of the 10.00 mol/L acetic acid stock solution is required to make the 2.500 mol/L acetic acid solution.
To determine the volume of water needed to make the standard dilution, we subtract the volume of the stock solution from the total desired volume.
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what is the pH of a solution with [H+] = 1.25 x 10^-10M?
Answers
pH = -log[H+]
Given [H+] = 1.25 x 10^-10 M:
pH = -log(1.25 x 10^-10)
pH = -log(1.25) + log(10^-10)
pH ≈ -9 + (-10)
pH ≈ -19
Therefore, the pH of the solution with [H+] = 1.25 x 10^-10 M is approximately -19.
Answer:
9.90
Explanation:
Given [H+] = 1.25 x 10^-10 M, we can calculate the pH using the formula:
pH = -log10([H+])
pH = -log10(1.25 x 10^-10)
Using logarithmic properties:
pH = -log10(1.25) - log10(10^-10)
Since log10(10^-10) is equal to -10:
pH = -log10(1.25) - (-10)
pH = -log10(1.25) + 10
Now, evaluating the logarithm using a calculator:
pH = -0.0969 + 10
pH = 9.9031
Therefore, the pH of the solution with [H+] = 1.25 x 10^-10 M is approximately 9.9031. Rounding it to two decimal places, the pH is approximately 9.90.
Why do scientists prefer using the Kelvin Scale of temprature?
Answers
Probably because they think it is more accurate.
Hope it helps.
Which of the following ions is a polyatomic ion?
OP³-
OOH
0²-
Mg
Answers
Polyatomic ion is OOH
Polyatomic ion are ion which consist of more than one atom and atom in a polyatomic ion are usually covalently bonded to one another and therefore stay together as a single or charged unit and here OOH there are two oxygen atom and one hydrogen atom that's it is polyatomic ion
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what is the wavelength of light if the frequency is 7.0*10^16 Hz
Answers
49 becase you multilpy it
Explanation:
what is the Newton's second law?explain.
Answers
The net force of an object is equal to its mass times its acceleration.
What process is show in the image above?
A. Photosynthesis
B. Cellular respiration
C. Fermentation
Answers
Answer:
well i need the image so we can choose?