Suppose that the NaOH sitting on the shelf had absorbed 2 g of water for every 1 g of NaOH. How would this have affected your results? A. The molarity of the NaOH solution would have been double what you expected. B. The concentration of the NaOH solution would have been different, but the titration results would have been the same. C. The molarity of the NaOH solution would have been one third what you expected. D. It would not have affected the concentration of the NaOH solution nor the results of the titrations.
Answers
For every 1g of NaOH, if it has absorbed 2g of water then, C. the molarity of the NaOH solution would have been one third what you expected.
How does the absorption of water affect the molarity of compounds ?If the NaOH had absorbed 2 g of water for every 1 g of NaOH, the total mass would be 3 g, with only 1 g of it being NaOH. This means the effective concentration of NaOH in the solution would be lower than expected (1/3 of the original amount). As a result, the calculated molarity of the NaOH solution would be one third of what you expected, affecting your titration results.
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Related Questions
When the water in the ocean goes back into the sky what is it called?
Answers
Answer:
Transpiration
Then condensation
Then precipitation
and etc.
Answer: The water cycle?
Explanation: I hope this answer your question- Lily ^-^
What occurs during replication?
O A protein is formed from information in messenger RNA.
A messenger RNA strand is made from DNA.
O A copy of DNA is made from existing DNA.
A copy of DNA is transferred from one organism to another.
Answers
Answer:
A
Explanation:
Hopefully this helps
Answer:
A copy of DNA is made from existing DNA.
Explanation:
Just did the quiz
If a doctor wants to know how fast your heart is beating, what would they do
Answers
Answer:
Use a stethoscope....?
what are the answer choices?
The atmospheric pressure is highest at...
Answers
Answer: Sea Level
Explanation: facts
ammonium perchlorate is the solid rocket fuel that was used by the u.s. space shuttle and is used in the space launch system (sls) of the artemis rocket. it reacts with itself to produce nitrogen gas , chlorine gas , oxygen gas , water , and a great deal of energy. what mass of oxygen gas is produced by the reaction of 9.94 of ammonium perchlorate?
Answers
The mass of oxygen gas produced by the reaction of 9.94 g of ammonium perchlorate can be calculated using stoichiometry and the balanced equation for the reaction.
What is the balanced equation?
The balanced equation for the reaction of ammonium perchlorate (NH₄ClO₄) is:
NH₄ClO₄ → N₂(g) + Cl₂(g) + 2O₂(g) + 2H₂O(g)
From the balanced equation, we can see that for every 1 mole of NH₄ClO₄, 2 moles of O₂ are produced.
First, we need to determine the number of moles of NH₄ClO₄ in 9.94 g:
moles of NH₄ClO₄ = mass / molar mass = 9.94 g / (NH₄ClO₄ molar mass)
Next, we can use the mole ratio from the balanced equation to calculate the moles of O₂ produced:
moles of O₂ = moles of NH₄ClO₄ × (2 moles of O₂ / 1 mole of NH₄ClO₄)
Finally, we can convert the moles of O₂ to grams using the molar mass of O₂.
Therefore, the mass of oxygen gas produced can be calculated using the given information and stoichiometry.
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HELP PLZ ASAP
will give brainliest
Answers
Answer:
I believe that it would be the third option down.
Explanation:
The thermal energy is in constant motion in the COOLER room, and when the desired temperature in the room is reached, it stops.
A thin layer of radioactive copper is deposited onto the end of a long copper bar and the sample is annealed at fixed temperature for 10 h. The bar is then cut into 1 mm thick disks perpendicular to the diffusion direction and the quantity of radioactive copper in each is measured using a device similar to a Geiger counter. The detector measured It counts/(min m²) and I2 = 500 counts/(min m²) for disks taken from x₁ = mm from the end of the bar. Calculate the self-diffusivity (D) of copper assuming that the count rate is proportional to the concentration of the radioactive isotope. (Hint: infinite source 5000 diffusion follows) 100 mm and x2 = 400 c(x, t) = -²/4Dt 9 2√√RDI
Answers
The self-diffusivity (D) of copper can be calculated by using the given data and the equation c(x, t) = (x²/4Dt) * (√(R/D) - 1).
The equation c(x, t) = (x²/4Dt) * (√(R/D) - 1) relates the concentration of the radioactive isotope of copper (c) at a distance (x) from the end of the bar to the self-diffusivity (D) of copper and the annealing time (t).
I₁ = It counts/(min m²)
= 500 counts/(min m²)
I₂ = 500 counts/(min m²)
x₁ = mm
x₂ = 400 mm
t = 10 hours
= 600 minutes
We can use the given equation with the measured counts (I₁ and I₂) to calculate the ratio R/D.
R/D = (I₂/I₁)²
Substituting the values:
R/D = (500/500)²
= 1
We may now rearrange the equation to find D:
D = (x²/4ct) * (√(R/D) - 1)
Substituting the known values:
D = (x₁²/4ct) * (√(1/D) - 1)
= (x₁²/4ct) * (√(1/D) - 1)
Substituting the given values:
x₁ = mm
= 0.001 m
t = 10 hours
= 600 minutes
D = (0.001²/4 * 0.001 * 600) * (√(1/D) - 1)
= 1.6667 * (√(1/D) - 1)
To determine the value of D, we can numerically solve this equation. By substituting different values for D and iterating until the equation is satisfied, we can determine the self-diffusivity of copper.
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proof partition Function for Semi classical system has N particles Z - Zr NI
Answers
The partition function Z for a semi-classical system with N particles can be expressed as the product of the translational partition function Zr and the internal partition function NI due to the statistical independence of the translational and internal degrees of freedom in the system.
To prove this, we start by considering the partition function for a system with N particles:
Z = ∑ exp(-βE)
where β = 1/(k*T) is the inverse temperature, E is the energy of a particular state, and the sum is taken over all possible states of the system.
To separate the translational and internal degrees of freedom, we can write the total energy as the sum of the kinetic energy of translation (ET) and the internal energy (EI). Therefore, E = ET + EI.
Now, we rewrite the partition function as:
Z = ∑ exp(-β(ET + EI))
Expanding this expression, we can split the summation into two parts:
Z = ∑ exp(-βET) * exp(-βEI)
The first term, exp(-βET), represents the translational partition function Zr, which depends on the volume (V) and the thermal de Broglie wavelength (λ) of a single particle. It can be written as Zr = (V / λ^3)^N.
The second term, exp(-βEI), represents the internal partition function NI, which accounts for the internal degrees of freedom of the particles.
Combining these results, we obtain:
Z = Zr * NI
Thus, we have proved that for a semi-classical system with N particles, the partition function Z can be expressed as the product of the translational partition function Zr and the internal partition function NI, i.e., Z = Zr * NI.
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Note- The complete question is "Prove that for a semi-classical system with N particles, the partition function Z can be expressed as the product of the translational partition function Zr and the internal partition function NI, i.e., Z = Zr * NI."
For each event stated, indicate how the concentration of each species in the chemical equation will change to reestablish equilibrium. An up arrow indicates an increase in concentration, a down arrow indicates a decrease in concentration, and leaving it blank means there is no change in the concentration.
Answers
What is Le Chatelier's principle?
It is also known as equilibrium law, are used to predict the effect of some changes on a system in chemical equilibriumWhen factors like concentration, pressure, temperature, inert gases that affect equilibrium are changed, equilibrium will shift in that direction where the effects caused by these changes are nullified.1. Increasing concentration of CO:
The concentration of product CO2(g) increases and the concentration of reactants, CO(g) and O2(g) decreases
2. Increasing concentration of CO2:
The concentration of reactants, CO(g) and O2(g) increases and concentration of the product, CO2(g), decreases
3. Decreasing the volume of system: The concentration of the product, CO2(g) increases and the concentration of the reactants, CO(g) and O2(g) decreases
Explanation:
Given reaction: 2CO(g) + O2(g) -->2CO2(g)
1. Increasing concentration of CO:
When the concentration of reactant CO(g), increases; the equilibrium shifts towards the forward direction or product side, thereby increasing the concentration of product, CO2(g) and decreasing the concentration of the reactants, CO(g) and O2(g).
2. Increasing concentration of CO2:
When the concentration of the product CO2(g), increases; the equilibrium shifts towards backward direction or reactant side, thereby increasing the concentration of the reactants, CO(g) and O2(g) and decreasing the concentration of product, CO2(g).
3. Decreasing the volume of the system
When the volume of the system decreases, the pressure increases, thus causing the equilibrium of reaction to shift in a direction that produces less number moles of gas.
Since, total number of moles of gaseous reactants is 3 and products is 2
Therefore, when the volume of system decreases; equilibrium of the reaction shifts towards the forward direction or product side, thereby increasing the concentration of the product, CO2(g) and decreasing the concentration of the reactants, CO(g) and O2(g).
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a student incorrectly names a compound as 4,6-diethyl-5-heptene. the correct iupac name of this compound is ________.
Answers
5-Ethyl-3-methyloct-3-ene is the IUPAC name of the substance. Alkenes are organic substances with a functional group made up of a carbon-carbon double bond. Alkenes can be named according to a logical set of rules, just like any other chemical substance.
According to this iupac method, the names of organic compounds are written using the IUPAC names of alkanes, which are straight-chain molecules containing all of the carbon atoms. An analog alkane or similar alkane is one such substance. The structure, common name, and IUPAC name of each of these alkane's atoms are listed below. The main benefit of a method is that it does not require memorizing the names of all organic compounds; instead, it just requires remembering a few rules and the names of the aforementioned alkanes.
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What is the name of the ionic compound that forms between magnesium and sulfur atoms?
Answers
Answer:
Magnesium sulfide | MgS - PubChem.
The lattice constant of Ge at room temperature is a=5.65×10 −8 cm. Detcrmine the number of Ge atoms /cm 3 . B. Calculate the distance from the center of one Germanium atom to the center of its nearest neighbor. C. The density of valence electrons /cm ∧ 3
Answers
A. The number of Ge atoms/cm is 5.54 × 10²⁴.
B. The distance from the centre of one Germanium atom to the centre of its nearest neighbour is 2.825 × 10⁻⁸cm.
C. The density of valence electrons /cm³ is 7.07 × 10⁷.
To determine the number of Germanium (Ge) atoms per cm³, we can use the lattice constant and the assumption that the Ge crystal structure forms a simple cubic lattice.
a. The volume of the unit cell in a simple cubic lattice is given by the cube of the lattice constant:
Volume of unit cell = a³ = (5.65 × 10⁻⁸ cm)³
a³ = 180.36 × 10⁻²⁷
Since each unit cell contains one Ge atom, the number of Ge atoms per cm³ is equal to the reciprocal of the volume of the unit cell:
Number of Ge atoms/cm³ = 1 / (a³ = 1 / [(5.65 × 10⁻⁸ cm)³]
= 0.00554447 × 10²⁷
= 5.54 × 10²⁴
b. The distance from the centre of one Ge atom to the centre of its nearest neighbour can be determined by considering the arrangement of atoms in the simple cubic lattice. In this case, each Ge atom has six nearest neighbours, located at the corners of a cube surrounding the central atom.
The distance from the centre of one atom to the centre of its nearest neighbour is equal to half the length of the edge of the cube:
Distance to nearest neighbor = a / 2 = (5.65 × 10⁻⁸ cm) / 2
= 2.825 × 10⁻⁸cm
c. The density of valence electrons per cm³ can be calculated by multiplying the number of Ge atoms per cm (determined in part a) by the number of valence electrons per Ge atom. Germanium has four valence electrons.
The density of valence electrons/cm³ = Number of Ge atoms/cm³ × Number of valence electrons per Ge atom
Density of valence electrons/cm³ = (1 / [(5.65 × 10⁻⁸ cm)³]) × 4
= 7.07 × 10⁷
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what elements react with mercury?
Answers
fluorine, F2, chlorine, Cl2, bromine, Br2, or iodine, I2
State the name(s) of the sub-atomic particle(s) that have/has a positive charge. Answer with the name of the particle(s) only.
A. Neurons
B. Protons
C. Electrons
Answers
Answer:
protons because they have the most positive charge
what is emission spectrum and absorption spectrum?
Answers
- Absorption spectrum is a technique used to find out what makes up a sample of a substance – in other words, a chemical analysis.
Answer:
When matter interact with EMR then spectrum is obtained. We can understand both spectra using Bohr's hydrogen spectrum. let's have a look on Bohr's hydrogen spectrum what does it say. It says when a electron gains energy it moves from one energy level to other(lower to higher) which is Absorption phenomenon. When the electrons returns from excited state to ground state they emits several spectral lines. this spectrum is called as emission spectrum. inshort the
Emission spectrum is spectrum of electromagnetic radiations that were emitted from the higher energy state(Excited state) to lower energy state(Ground state). and study of emission spectrum is known as AES (Atomic Emission spectroscopy).
When an atom or ion is subjected to EMR, it absorbs certain level of radiations, and when this absorbed energies are studied under spectroscopy they are plotted as absorption spectrum, and study of Absorption spectrum is known as AAS (Atomic Absorption spectroscopy).
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what is chemical reaction?
Answers
Answer:
Chemical reactions occur when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.
Explanation:
hope it helps
Please Help!
3/1H + 2/1H → 1/0n + ?
a. 4/4Be
b. 2/1H
c. 3/0n
d. 4/2He
Answers
Answer:
I'm pretty sure the answer Is c because I think I remember doing something like that so yeah
The electrophilic bromination or chlorination of benzene requires ______ along with the halogen.
Answers
The electrophilic bromination or chlorination of benzene requires Lewis acid along with the halogen.
What is bromination of benzene?The bromination or chlorination of benzene is an example of an electrophilic aromatic substitution reaction.
During the reaction, the bromine forms a sigma bond to the benzene ring, yielding an intermediate. Subsequently a a proton is removed from the intermediate to form a substituted benzene ring.
This reaction is achieved with the help of Lewis acid as catalysts.
Thus, the electrophilic bromination or chlorination of benzene requires Lewis acid along with the halogen.
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Describe the four fundamental forces. Which of these forces are involved in chemical
bonding?
Answers
Your Welcome If This Helped
The four fundamental forces which are involved in chemical bondings are gravitational force, electromagnetic force and weak & strong nuclear force.
What are forces?Forces are the external stress applied on any body to change the direction, position and motion of that body.
Four fundamental forces are:
Gravitational force- This force is a natural force and it is present in between the two objects which have mass or energy.Electromagnetism- This force is a kind of attractive force between opposite charged particles and in chemical bonding due to this ionic bond, hydrogen bonds are formed.Weak nuclear force- This is a weak interaction force present inside the nucleus of any atom, due to which decay of nucleus takes place as of unstable nature of nuclei.Strong nuclear force- This is strong attraction forces present in between the neutrons and protons, which make the atom stable.Hence, four fundamental forces are gravitational force, electromagnetic force and weak & strong nuclear force.
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How many grams are there in 7.9 X 10^23 molecules of AgNO3?
Answers
Answer:$$7.50 x 10^23$$
$$H_2SO_4$$?
Explanation:It is a fact that such a quantity has a mass of
98.08
⋅
g
. Why? Because
6.022
×
10
23
particles SPECIFIES a molar quantity. And we know (or can calculate) that sulfuric acid has a molar mass of
98.08
⋅
g
...
Which of the following materials is acidic?
A.lemon juice
B.a baking soda solution
C.drain cleaner
D.milk of magnesia
Answers
Answer:
lemon juice............
at a fixed temperature and pressure, a cylinder contains equal volumes of o2 and an unknown gas, weighing 20.0 g and 17.5 g respectively. what is the identity of the unknown gas?
Answers
At a fixed temperature and pressure, a cylinder contains equal volumes of O2 and an unknown gas. The identity of the unknown gas CO.
The number of moles of a given substance is calculated by dividing the mass by the molar mass.
The number of moles of O₂ = \(\mathbf{=\dfrac{20.0 \ g}{32 \ g/mol}}\)
= 0.625 moles.
Based on the given assumption, at fixed temperature and pressure;
Let assume that the number of moles of the unknown gas is = 0.625 molesThe molar mass of the unknown gas can be estimated as:
\(\mathbf{= \dfrac{mass}{number \ of \ moles}}\)
\(\mathbf{= \dfrac{17.5 \ g}{0.625 \ moles}}\)
= 28 g/mol
Therefore, we can conclude that the unknown gas is CO.
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How much does the mass of 12.65-g sample of copper(II) nitrate hexahydrate decrease when heated?
Answers
The vat is made of metal. Why would it matter that the material from which the vat is made is metal ?
Answers
Answer:
Due its storing and holding ability.
Explanation:
It matter that the material from which the vat is made is metal because this vat is used for storing and holding liquids. Vat is a large container or tank that is used for storing or holding liquids in industrial sector. This vat is made of metal which increases its strength and durability. If the vat is made of wood or plastic so it can't hold huge amount of liquid or chemical due to its weak material so that's why it matters that the substance from which the vat is made is metal or not.
Fernando just entered a drug treatment center for his chemical dependency. He is currently going through a process in which his body is cleared of drugs. What is this process called?
Select one:
a.
Tolerance
b.
Delirium
c.
Withdrawal
d.
Detoxification
Answers
According to the research, the correct option is d. Fernando is currently going through Detoxification process in which his body is cleared of drugs.
What is detoxification?This is the treatment aimed at restoring the body's physiological homeostasis after it has been disturbed by the consumption of psychotropic substances as drugs.
In this sense, this process is carried out under the supervision of specialists in the treatment of addictive behaviors.
Therefore, we can conclude that Detoxification is a process of eliminating drugs or substances harmful to health to achieve physiological stability in the body.
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The underground pipe fitting connecting the inlet pipe to a fire hydrant is called the?
a) Auxiliary Pipe
b) Bury
c) Hydrant Riser
d) Fire Line
Answers
The underground pipe fitting connecting the inlet pipe to a fire hydrant is called the Hydrant Riser.
Fire hydrants with a variety of valves and connection points are seen in many places. In the event of a fire breakout, firefighters locate the fire hydrants, connect their hoses and then pump a large volume of pressurized water to put out the fire. A special pentagonal wrench is used to remove the valve cover of the hydrant. Then after attaching the hoses, the firefighters open the valve for the water to flow.
They usually have a connection point to hook up a fire hose and a nut or bolt to turn on which will start the flow. Every fire hydrant is essentially just an attachment to the main water line. Underneath that connects the hydrant valve through a pipe called a riser. However, normal hydrants don’t change the water pressure or flow in any way. They function as valves so firefighters can utilize the already present pressure in the water pipes. While all of this may sound simple the internal mechanics of a fire hydrant are a little more complex and can vary by region.
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heelp balance plez..... :}
Answers
Answer:
CaC2 + 2H2O → C2H2 + Ca(OH)2
thats it
Explanation:
How many MOLES of AICI3 are in 215 GRAMS of AICI3?
Answers
215 grams of AlCl₃ is equal to 1,61 moles of AlCl₃. The relative molecular mass of the compound AlCl₃ is 133.5 grams/mol.
The mole is one of the basic units used to indicate the amount of substance in the international system of units. The equation for calculating moles is mol = mass / relative atomic mass. To find out the mol of AlCl₃ you can use the following steps
Step 1: Calculate the relative molecular mass for the compound AlCl₃.
Mr AlCl₃ = ( Ar Al × ∑Al ) + ( Ar Cl × ∑Cl)
= ( 27 gam/mol × 1) + ( 35,5 gram/mol × 3)
= 27 gram/mol + 106,5 gram/mol
= 133,5 grams/mol
Step 2: Calculate the moles of the compound AlCl₃.
n AlCl₃ = mass AlCl₃ ÷ relative molecular mass AlCl₃
= 215 grams ÷ 133,5 grams/mol
= 1,61 mol
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Where do electromagnetic waves move slowest?
Answers
Answer:
Solids
Explanation:
Electromagnetic waves travel fastest in empty space. But they are slowest in solids
what is 13-ethyl-3-methoxy-gona-2 5(10)-diene-17-one
Answers
13-ethyl-3-methoxy-gona-2 5(10)-diene-17-one is Methoxydienone. An anabolic steroid is a type of chemical called methylstenbolone. It is turned into testosterone and other hormones by the body.
There is no good scientific evidence to support the use of methandienone for weight loss, improving athletic performance, level of testosterone, or any number of other purposes. Infertility, behavioral changes, hair loss, and breast development (in men) are some of the side effects. Methoxydienone can likewise prompt liver harm and coronary illness
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