how many molecules of c l subscript 2 are present in 27.3 moles of c l subscript 2?
Answers
The number of the molecules of the Cl2 are present in the 27.3 moles of Cl2 is 1.64 x 10²⁵ molecules.
The proportionality factor that connects the quantity of material in a sample with the number of component particles in that sample is called the Avogadro constant, often known as NA or L. It has a precise value of 6.022140761023 reciprocal moles and serves as a SI defining constant.
We calculate the number of molecules by using relation of Avogadro number as follows:
No. of molecules = 1 mole of substance = n (Avogadro number) = molecular weight
So, molecular weight = n
Value of n is 6.022 x 10²³
so, 27.3 g of water has 6.022 x 10²³ molecules
27.3 g ≡ 6.022 x 10²³
1 g ≡ 6.022 x 10²³/ 27.3
27.3 g ≡ (6.022 x 10²³/18) x 27.3
= 1.64 x 10²⁵ molecules
27.3 moles of Cl2 is 1.64 x 10²⁵ molecules.
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There are 1.647 x 10^25 molecules of Cl2 present in 27.3 moles of Cl2.
To find the number of molecules of Cl2 present in 27.3 moles of Cl2, we need to use Avogadro's number. Avogadro's number tells us the number of particles (atoms or molecules) in one mole of a substance. It is approximately equal to 6.022 x 10^23 particles per mole.
First, we need to convert the moles of Cl2 to the number of particles of Cl2 using Avogadro's number:
27.3 moles Cl2 x (6.022 x 10^23 molecules/mole) = 1.647 x 10^25 molecules of Cl2
To determine the number of molecules in 27.3 moles of Cl₂, you can use Avogadro's number, which is approximately 6.022 x 10²³ molecules per mole.
Number of molecules = (moles of Cl₂) x (Avogadro's number)
Number of molecules = (27.3 moles) x (6.022 x 10²³ molecules/mole)
Number of molecules = 1.64 x 10²⁵ molecules of Cl₂
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Related Questions
How many mls of solvent are required to make a 48% solution from 25 g of solute? (round to the nearest tenth with no units!)
Answers
To make a 48% solution from 25 g of solute, you would need approximately 52.08 mL of solvent.
To calculate the volume of solvent required, we need to consider the mass percent of the solution. The mass percent is defined as the ratio of the mass of solute to the total mass of the solution, multiplied by 100. In this case, the mass percent is given as 48%.
To find the volume of solvent, we can set up a proportion using the mass percent. Let's assume the total volume of the solution is V mL. We can set up the following equation:
(25 g)/(V mL) = (48 g)/(100 mL)
Cross-multiplying and solving for V, we get:
25V = 48 * 100
V = (48 * 100)/25
V ≈ 192 mL
Therefore, you would need approximately 192 mL of the solvent to make a 48% solution from 25 g of solute.
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What volume of KI solution of concentration of 3 M would use to make 0.3L of KI solution of 1.25 M?
Answers
Taking into account the definition of dilution, a volume of KI solution of 0.125 L of concentration of 3 M would use to make 0.3L of KI solution of 1.25 M.
What is DilutionWhen it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution.
Dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.
In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.
A dilution is mathematically expressed as:
Ci×Vi = Cf×Vf
where
Ci: initial concentrationVi: initial volumeCf: final concentrationVf: final volumeInitial volumeIn this case, you know:
Ci= 3 MVi= ?Cf= 1.25 MVf= 0.3 LReplacing in the definition of dilution:
3 M× Vi= 1.25 M× 0.3 L
Solving:
Vi= (1.25 M× 0.3 L)÷ 3 M
Vi= 0.125 L
In summary, a volume of KI solution of 0.125 L of concentration of 3 M would use to make 0.3L of KI solution of 1.25 M.
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El lago Don Juan, es considerado el más salino de la Tierra, contiene en sus aguas 3.72 mol/kg de cloruro de calcio (CaCl2) y 0.5 mol/kg de cloruro de sodio (NaCl). ¿Cuántos gramos de estas sales contiene por cada kilogramo de agua?
Answers
Answer:
\(412.8 \frac{gCaCl_2}{kg\ agua} \\\\29 \frac{gNaCl}{kg\ agua}\)
Explanation:
¡Hola!
En este caso, dado que se nos dieron las moles de cada sal por cada kilogramo de agua, es necesario para nosotros calcular los gramos por medio de la masa molar de estas, que son 110.98 g/mol y 58.44 g/mol respectivamente.
De este modo, realizamos las conversiones de moles a masa como se muestra a continuacion:
\(3.72\frac{molCaCl_2}{kg\ agua} *\frac{110.98gCaCl_2}{1molCaCl_2}=412.8 \frac{gCaCl_2}{kg\ agua} \\\\0.5\frac{molNaCl}{kg\ agua} *\frac{58.44gNaCl}{1molNaCl}=29 \frac{gNaCl}{kg\ agua}\)
¡Saludos!
i need the answers pleaseee! this is acids and bases for chemistry
Answers
Answer:
for pH 13 it = strong based the ph 2 is= weak acid
Explanation:
EXERCISE 3: WHAT DOES pCO2 CHANGE? - When pCO
2
increases, the concentration of total CO
2
dissolved in water - When pCO
2
increases, the concentration of only CO
2
dissolved in water - When pCO
2
increases, the pH - Which form of dissolved CO
2
is most common in water? Ocean acidification is the decrease in pH due to increasing atmospheric CO
2
concentration.
2
. Choose the correct word option in the statements below: - An organism that needs CO
2
is likely to fare better / worse under ocean acidification. - An organism that needs HCO
3
- is likely to fare better/worse under ocean acidification. - An organism that needs CO
3
2−
is likely to fare better/worse under ocean acidification.
Answers
pCO2 is an important factor that affects various aspects of water chemistry and the impacts of ocean acidification. When pCO2 increases, the concentration of total CO2 dissolved in water also increases. This leads to changes in pH, which decreases due to increasing atmospheric CO2 concentration.
When pCO2 rises, the concentration of only CO2 dissolved in water increases. The dissolved CO2 forms carbonic acid, which contributes to the acidification of the ocean. This increase in CO2 affects the equilibrium between CO2, HCO3-, and CO3^2-, shifting it towards higher levels of dissolved CO2 and H+ ions, resulting in a lower pH.
In terms of the impacts of ocean acidification on different organisms, the effects can vary depending on their specific needs. An organism that requires CO2 is likely to fare better under ocean acidification since the increase in dissolved CO2 can provide them with a favorable environment. However, organisms that rely on HCO3- or CO3^2- may fare worse under ocean acidification, as the lower pH interferes with the availability of these carbonate ions, which are essential for shell formation and calcification in some marine organisms.
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7 protons and 8 neutrons to nuclide notation
Answers
Answer:
yes because its nuetrins notation
match the correct differential test to the required reagent needed to view results. group of answer choices kovac's reagent [ choose ] hydrogen peroxide [ choose ] ferric chloride [ choose ] iodine
Answers
The differential test to the required reagent needed to view results is reagent is the substance that cause the chemical reaction to find out the another substance.
The reagent is used to carry out the test in the laboratory. reagents are used to detect the or measure the other substance in the chemical reaction. reagent can be a compound or the mixture the is added to start the chemical reaction. the correct match for the reagent of the differential test are given below as :
reagent test
kovac's reagent Tryptophanase test
hydrogen peroxide catalase reaction or test
ferric chloride phenol test
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GIVING AWAY 70 PTS AND BRAINLIEST ANSWER QUICK!
Which of the following techniques can be used to separate a heterogeneous mixture into its component parts? A Sort by colour B Separation by density C Apply heat D Apply pressure
Answers
Answer:
i think it might be separation by density
Explanation:
Answer:
B: Sort by density
Btw im not copying the person above me. I am 98% Sure its density
The symbol equation for combustion of a hydrocarbon is shown below. What number will go before the oxygen reactant when this equation is balanced?
Answers
Answer:
balance the equation
Explanation:
\(C_{3}H_{8} + 5O_{2} ->3CO_{2} + 4H_2O\)
Explain why gases such as the oxygen found in tanks used at hospitals are compressed. Why must care be taken to prevent compressed gases from reaching a high temperature?
Answers
Answer:
Large amount of gas can be stored in small container.
Explanation:
They are compressed so that a larger amount of gas can be stored in a smaller container. A greater mass confined to a smaller volume makes transporting and storing of gases easier. Increasing temperature increases pressure, and the cylinders might explode.
In an experiment, how many variables should you change at a time? And why?
Answers
Answer:
it should test one variable at a time.
Explanation: because you will not be able to tell which variable is responsible for the observed results.
WHAT IS THE STOCK NAME FOR FeSO^3
Answers
Iron(II) Sulfite FeSO3 Molecular Weight
Hope this helps!
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n aqueous nitric acid solution has a ph of 1.89. what mass of hno3 is present in 6.41 l of this solution?
Answers
Answer:
474.6g
Explanation:
The pH of an aqueous solution is a measure of the concentration of hydrogen ions (H+) in the solution. A solution with a pH of 1.89 is relatively acidic, which means that it has a high concentration of H+ ions. Nitric acid (HNO3) is a strong acid that dissociates completely in water to form H+ ions and NO3- ions. Therefore, the concentration of H+ ions in an aqueous nitric acid solution is equal to the concentration of nitric acid (HNO3) in the solution.
To find the mass of HNO3 in the solution, you can first calculate the concentration of HNO3 in the solution using the concentration of H+ ions and the number of H+ ions produced by each molecule of HNO3:
[HNO3] = [H+] / (2 H+ ions / molecule HNO3)
Since the concentration of H+ ions in the solution is equal to the pH of the solution, you can substitute the pH of the solution (1.89) for the concentration of H+ ions:
[HNO3] = 1.89 / (2 H+ ions / molecule HNO3) = 0.945 M
To find the mass of HNO3 in the solution, you can multiply the concentration of HNO3 by the volume of the solution and the molar mass of HNO3:
Mass HNO3 = [HNO3] * Volume * Molar mass HNO3
= 0.945 M * 6.41 L * 63.01 g/mol
= 474.6 grams
Therefore, the mass of HNO3 in 6.41 L of the aqueous nitric acid solution is approximately 474.6 grams.
Vm will be close the Eion which has the _____ conductance at the point in the AP
Answers
Vm will be close the Eion which has the highest conductance at the point in the AP.
Vm, the membrane potential of a neuron, will be closest to the equilibrium potential (Eion) of the ion with the highest conductance at that point in the action potential.
Conductance is a measure of how easily ions can move across the membrane, and the ion with the highest conductance at a given point in the action potential will have the greatest influence on the membrane potential.
At rest, the membrane potential is close to the equilibrium potential of potassium (EK) because the resting conductance of potassium is high. During depolarization, the conductance of sodium (ENa) increases, and the membrane potential approaches the equilibrium potential of sodium.
During repolarization and hyperpolarization, the conductance of potassium increases again, and the membrane potential returns to EK.
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Please help, thank you! Match each organism with the correct description.
1. algae
2. rabbit
3. tiger
4. human
5. bacteria
<><><><><><><><><><><><><><><><>
A. producer
B. omnivore
C. decomposer
D. primary consumer
E. carnivore
Answers
Answer:
1. A
2. D
3. E
4. B
5. C
Explanation:
1. Plants are known as producers since they produce energy for themselves through photosynthesis.
2. The rabbit is a primary consumer since it’s herbivore and only feeds on producers for energy.
3. The tiger is a carnivore, and preys on other consumers for energy.
4. A human is an omnivore since it can gain energy from both producers and consumers.
5. Bacteria are know as decomposers since such category of organisms break down other organisms to gain energy.
What does silver 505.
Answers
Answer: Can you write the question more fully?? I can help.
A precipitate is formed when the two solutions, barium nitrate, Ba(NO3)2, and phosphoric acid, H3PO4, are
mixed. Identify the correct products for this reaction.
A)
BaHa & NPO4
B)
BazN2 & HNO3
Baz(PO4)2 & NO2
D)
Baz(PO4)2 & HNO3
Answers
d. Ba₃(PO₄)₂(s)+6HNO₃(aq)
Further explanationDouble-Replacement reactions. Happens if there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product
To predict whether this reaction can occur or not is one of them, the precipitation reaction. A precipitation reaction occurs if two ionic compounds which are dissolved reacted to produce one of the products of the ion compound does not dissolve. Formation of these precipitating compounds that cause reactions can occur
Because A precipitate is formed, then compounds of CO₃²⁻ and PO₄³⁻ except for Compounds of Li +, Na +, K +, Rb +, Cs +, and NH₄ + are generally included in the insoluble compound
So the reaction :
3Ba(NO₃)₂(aq)+2H₃PO₄(aq)⇒Ba₃(PO₄)₂(s)+6HNO₃(aq)
A precipitate is formed ⇒ Ba₃(PO₄)₂
Where does Respiration mainly take place in?
A - Mitochondria
B - The nucleus
C - The cell wall
D - The vacuole
Answers
Respiration happens in the cells of plants, animals and humans, mainly inside mitochondria, which are located in a cell's cytoplasm.
What is the name of this hydrocarbon? a skeletal model has 2 central carbons bonded to c h 3 at each end, and at the left of the 2 central carbons. 3-isopentane 2-methylbutane 3-methylbutane 1,2-methylpropane
Answers
The name of the given hydrocarbon in which 2 central carbon atoms with additional 3 methyl groups is 2-methylbutane.
What are hydrocarbons?Hydrocarbons are the organic compounds which are made up of by the combination of hydrogen and carbon atoms.
According to the question desired structure is attached below where:
2 and 3 number shows the central carbon atoms which are present in the hydrocarbon.1 and 4 number shows the methyl groups that are attached at each end.One extra methyl group is attach on the left side of 2nd central carbon atoms.Hence required hydrocarbon is 2-methyl butane.
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Answer:
B. 2-methylbutane
Explanation:
Correct on Edge 2022!!!
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A lab procedure calls for 0.400 M NaOH solution. What volume would you end up with if you diluted 0.100 L of 0.700 M NaOH solution to obtain the necessary NaOH solution?
a. 0.0280 L
b. 0.0500 L
c. 5.21 L
d. 0.175 L
please help me ill give you brainliest
Answers
Which of the following is the final stage of a low mass star? *
1 point
Answers
14. The atoms of element X contains nineteen electrons. With which of the following elements will the chemistry of Z be similar? a Aluminum b) Bromine c) Lithium d) Magnesium
Answers
First of all, Z is unknown. I hope it is a mistake.
Now, it is given that the element X has nineteen electrons. This proves that X is actually Potassium.
As per the periodic table, both Potassium and Lithium belongs to group 1 as their valency is 1 because of the presence of only one electron in the outermost shell of electrons i.e., they lose an electron during a chemical reaction to form a stable compound. Furthermore, both are metallic.
Magnesium belongs to group 2 and hence its valency is two, which is different from potassium though it is metallic. Similiarly, bromine belongs to group 17 and gains one electron during a reaction in contrast to potassium.
( No internal links available for reference. For clarification, check the periodic table).
Is Al2O3 an element or compound?
Answers
Al2O3, also known as aluminum oxide, is a chemical compound composed of aluminum and oxygen. It is a white crystalline substance that is commonly used in a variety of industrial and commercial applications, including as a abrasive material, a refractory material, and as a high-temperature insulator.
In chemistry, the term "element" refers to a pure substance made up of only one type of atom. A "compound" is a substance made up of two or more elements combined in a fixed ratio. Al2O3 is a compound because it is made up of two different elements, aluminum and oxygen, that are chemically bonded together.
The chemical formula for aluminum oxide, Al2O3, represents the ratio of atoms in the compound. The "2" in the formula represents the number of aluminum atoms, while the "3" represents the number of oxygen atoms. This means that for every two aluminum atoms, there are three oxygen atoms in the compound.
In conclusion, Al2O3 is a chemical compound and not an element because it is made up of two different elements combined in a fixed ratio.
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A hydrogen only spectrum
Answers
Answer:
yes
Explanation:
1. The largest particles that a stream deposits as it enters a pond are 8 centimeters in diameter. The
minimum velocity of the stream is approximately
1) 100 cm/sec 2) 200 cm/sec 3) 300 cm/sec 4) 400 cm/sec
Answers
How much electronic waste does Orlando produce ?
Answers
Answer:
20 to 50 million
Explanation:
neutral grain spirit is essentially the same as
Answers
The neutral grain spirit is essentially known as rectified spirits or ethyl alcohol.
Meaning of neutral grain spiritneutral grain spirit can be defined as raw material that is very concentrated with alcohol used to produce strong alcoholic products.
neutral grain spirit as the name implies is neutral in nature that is it can be blended with any other alcoholic product.
In conclusion, The neutral grain spirit is essentially known as rectified spirits or ethyl alcohol.
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Suppose a new group 5A element is discovered. Photoelectron spectroscopy (PES) reveals that its last two peaks occur at 1370 kJ/mol and 777 kJ/mol. Calculate the average valence electron energy (AVEE) of this element.
Answers
Answer: The average valence electron energy (AVEE) of this element =
1014.2 KJ/ mol or 1.0142mJ/mol.
Explanation:
The average valence electron energy = (number of electrons in s subshell x Ionization energy of that subshell) + (number of electrons in p subshell x Ionization energy of that subshell) / total number of electrons in both subshells of the valence shells.
The 5A elements are non-metals like Nitrogen and Phosphorus with the metallic character increasing as you go down the group, So a new 5A element will have characteristics of its group with 5 valence electron in its outermost shell represented as ns2 np3
Therefore the average valence electron energy (AVEE) of this element will be calculated as
The average valence electron energy = (2 x 1370 kJ/mol + 3 x 777 kJ/mol.) / 5
2740+2331/ 5 =5071/5
=1014.2 KJ/ mol or 1.0142mJ/mol.
name some examples of chemical solutions and maybe give a clear explanation as to what chemical solutions are
Answers
Answer:
Some examples of solutions are salt water, rubbing alcohol, and sugar dissolved in water. ... In our example of salt water, the solute is the salt. Solvent: this is the substance that makes up the majority of the solution. This is the part where the solute is dissolved.
Explanation:
I hope they should be right answer
In what type of nucleus is the strong nuclear force greater than theelectrostatic force?O A. Any nucleusOB. A very large nucleusOC. A stable nucleusOD. An unstable nucleus
Answers
Answer:
A. any nucleus.
Explanation:
Let's remember the concepts of strong nuclear force and electrostatic force:
- Strong nuclear force: is the force that keeps the nuclei together (protons and neutrons together).
- Electrostatic force: is the attractive and repulsive forces between particles due to electric charges (positive and negative charges).
We have to take into account that the strong nuclear force is the strongest fundamental force in nature, so this means that the strong nuclear force is greater than the electrostatic force.
Thus, based on this logic, the answer would be that any nucleus has a strong nuclear force that is greater than the electrostatic force, so the answer is A. any nucleus.