8.0 mol AgNO3 reacts with 5.0 mol Zn in
a single replacement reaction.
2AgNO3 + Zn → 2Ag + Zn(NO3)2
How many moles of Ag form from 8.0
mol AgNO3?
[?] mol Ag
Round your answer to the tenths place.
Answers
Taking into account the reaction stoichiometry, 8 moles of Ag can be produced from 8 moles of AgNO₃ and 5 moles of Zn.
Reaction stoichiometryIn first place, the balanced reaction is:
2 AgNO₃ + Zn → 2 Ag + Zn(NO₃)₂
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
AgNO₃: 2 moles Zn: 1 mole Ag: 2 moles Zn(NO₃)₂: 1 moleLimiting reagentThe limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
Limiting reagent in this caseTo determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 1 mole of Zn reacts with 2 moles of AgNO₃, 5 moles of Zn reacts with how many moles of AgNO₃?
[tex]amount of moles of AgNO_{3}= \frac{5 moles of Znx2 moles of AgNO_{3}}{1 mole of Zn}[/tex]
amount of moles of AgNO₃= 10 moles
But 10 moles of AgNO₃ are not available, 8 moles are available. Since you have less moles than you need to react with 5 moles of Zn, AgNO₃ will be the limiting reagent.
Moles of Ag formedConsidering the limiting reagent, the following rule of three can be applied: if by reaction stoichiometry 2 moles of AgNO₃ form 2 moles of Ag, 8 moles of AgNO₃ form how many moles of Ag?
[tex]amount of moles of Ag=\frac{8 moles of AgNO_{3}x2 moles of Ag }{2 moles of AgNO_{3}}[/tex]
amount of moles of Ag= 8 moles
Then, 8 moles of Ag can be produced from 8 moles of AgNO₃ and 5 moles of Zn.
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Related Questions
How many moles of fluorine atoms are in a sample of fluorine that contains 7.45 x 10^24 fluorine atoms? (Report your answer to one place past the decimal point.
Answers
Based on the calculations, the number of moles of fluorine atoms present is equal to 12.4 moles.
How to calculate the moles of fluorine atoms?In order to determine the number of moles of fluorine atoms, we would calculate the number of atoms in 1 mole of an fluorine atoms in accordance with Avogadro's constant.
1 mole of fluorine atom = 6.02 × 10²³ molecules
X moles of fluorine atom = 7.45 × 10²⁴ molecules
Cross-multiplying, we have:
X = 7.45 × 10²⁴/6.02 × 10²³
X = 12.4 moles.
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The Oxidation number of iron in the Complexion [Fe(CN) 6]³^- is what?
Answers
+3
Hence, the magnetic behaviour of the complex is paramagnetic. The oxidation number of the central metal atom: The oxidation number of the metal iron is +3.
Answer:
the oxidation number of iron in the complexion is +3 or x=+3
12.11 liters of gas at atmospheric pressure is compressed into a 0.669 L gas cylinder. What is the pressure (mm Hg) of the compressed gas if its temperature remains constant?
a. 1.38e4
b. 42.0
c. 93.8
d. 18.1
Answers
Answer:
a. [tex]P_2=1.38*10^4[mmHg][/tex]
Explanation:
If the Temperature of a gas remains constant (and if the amount of gas molecules doesn't change), then compressing the gas from 12.11 L to 0.669L will increase its pressure through Boyle's Law: [tex]P_1V_1=P_2V_2[/tex]
We'll also need to recall that atmospheric pressure with units of mmHg (since that is the unit requested in the answer) is 760 mmHg.
Letting the initial Pressure and Volume be the P1 and V1, and the final pressure be the P2 and V2, we can substitute and solve:
[tex]P_1V_1=P_2V_2[/tex]
[tex](760[mmHg])(12.11[L])=P_2(0.669[L])[/tex]
[tex]\dfrac{(760[mmHg])(12.11[L \!\!\!\!-])}{0.669[L \!\!\!\!-]}=\dfrac{P_2(0.669[L]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{----})}{0.669[L]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{----}}[/tex]
[tex]13757.2496[mmHg]=P_2[/tex]
Since the final pressure is only measured to 3 significant figures, we round the pressure accordingly
[tex]13800[mmHg]=P_2[/tex]
Note that in scientific notation, this is [tex]P_2=1.38*10^4[mmHg][/tex], occasionally written as [tex]1.38\text{E}4[mmHg][/tex]
entir
What is the striking back of
the
bunsen-
burner?
Answers
Answer:
With too little air, the gas mixture will not burn completely and will form tiny carbon particles that are heated to glowing, making the flame luminous. With too much air, the flame may burn inside the burner tube; that is, it may strike back.
An electron moved from shell n = 2 to shell n = 1. What most likely happened during the transition? (4 points)
A fraction of a photon was added.
A photon of energy was absorbed.
A fraction of a photon was removed.
A photon of energy was released.
Answers
which experimental technique was most likely used by the students to determine the rate of reaction?
Answers
The students can determine the rate of reaction by measuring change in concentration of reactant or product with time.
What is rate of reaction?The rate of a reaction is the rate at which reactant molecules are used up or the rate at which product molecules are formed.
The rate of a reaction can be determined by measuring the change in concentration of the reactant at each given time in a reaction.
The rate of reaction can be also be determined by measuring the change in concentration of the product at each given time in a reaction.
Therefore, the students can determine the rate of reaction by measuring change in concentration of reactant or product with time.
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How many electrons are in a ion that has 16 protons and 59 neutrons if it has negative 2 charge?
Answers
Calculate how many grams would be required to prepare 600. 0 ml of 0. 150 m of naf? molar mass of naf is 41. 9 g/mo
Answers
Considering the definition of molarity and molar mass, the mass of NaF required is 3.771 grams.
Definition of molarityMolar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:
[tex]molarity=\frac{number of moles}{volume}[/tex]
Molarity is expressed in units [tex]\frac{moles}{liters}[/tex].
Definition of molar massThe molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.
Mass of NaF requiredIn this case, you know:
molarity= 0.15 M= 0.15 [tex]\frac{moles}{L}[/tex]number of moles= ?volume= 600 mL= 0.6 LReplacing in the definition of molarity:
[tex]0.15\frac{moles}{L} =\frac{number of moles}{0.6 L}[/tex]
Solving:
0.15 [tex]\frac{moles}{L}[/tex] × 0.6 L= number of moles
0.09 moles= number of moles
The molar mass of NaF is 41. 9 g/mol. So, you can apply the following rule of three: If by definition of molar mass 1 mole of the compound contains 41.9 grams, 0.09 moles of the compound contains how much mass?
[tex]mass=\frac{0.09 molesx41.9 grams}{1 mole}[/tex]
mass= 3.771 grams
Finally, the mass of NaF required is 3.771 grams.
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What is lawn sand made up of and clay don’t copy straight off Cuz I can’t write the same thing it has
Answers
Answer:
?? what i dont understand
CaCO3(s) CaO(s) + CO₂(g)
4
3.25 mol CaCO3 decomposes
according to the reaction above.
What volume of CO2 gas is
produced once the gas cools to
STP?
Answers
A hydrate of zinc nitrate has the formula Zn(NO3)2 . xH2O. If the mass of 1 mol of anhydrous zinc nitrate is 63.67% of the mass of 1 mol of the hydrate, what is the value of x?
Answers
MM Zn(NO₃)₂ = 189.36 g/mol
mass 1 mol Zn(NO₃)₂ = 189.36 g
mass hydrate = 100 / 63.67 x 189.36 = 297.409 g
mass 1 mol hydrate = 297.409 g
MM hydrate = 297.409 g/mol
MM hydrate = MM Zn(NO₃)₂ + MM xH₂O
297.409 = 189.36 + x(18)
x = 6
How many grams Fe2O3 would be
required to make 187 g Fe?
Fe₂O3 + 3CO → 2Fe + 3CO₂
Answers
266.63g of Fe2O3 would be required to make 187 g Fe in accordance with the following equation: Fe₂O3 + 3CO → 2Fe + 3CO₂.
How to calculate mass?The mass of a product or reactant can be calculated using stoichiometry as follows:
According to this question, iron oxide reacts with carbon monoxide as follows:
Fe₂O3 + 3CO → 2Fe + 3CO₂
1 mole of Fe2O3 produces 2 moles of Fe
Moles of Fe = 187/56 = 3.34mol
3.34/2 = 1.67 moles of Fe2O3 will be required to produce 3.34 moles of Fe.
mass of Fe2O3 = 1.67 mol × 159.69 g/mol = 266.63g
Therefore, 266.63g of Fe2O3 would be required to make 187 g Fe in accordance with the following equation: Fe₂O3 + 3CO → 2Fe + 3CO₂.
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. Sodium hydroxide is added drop by drop to some hydrochloric acid in a beaker. Which of the following occurs in the beaker? .
Answers
Answer:
Table salt+water
Explanation:
When hydrochloric acid and sodium hydroxide interact it results in the formation of salt and a release of heat. The result of these 2 highly aggressive compounds is table salt and water. (Compounds that are ultimately harmless, even beneficial to us human beings)
Hope i helped
can a chemical reaction take place without enzyme
Answers
Answer:
Theoretically, Yes (See the explanation)
Explanation:
The body has enzymes that catalyze processes, as several other respondents have mentioned. I haven't noticed any comments, but the reverse impact might be just as significant. Some enzymes are reaction inhibitors. Others operate as both catalysts and inhibitors, depending on the amounts of the reactants and reaction products close to the catalyst. I'll provide an illustration to demonstrate how crucial inhibition may be. Let's say you consume three banana splits one after the other. That is a large number of calories. You would have a very high temperature and be so energetic and full of energy that you would be bouncing off the walls if all those calories were converted simultaneously into energy and heat. But neither you nor I have ever heard of overeating creating a high temperature or anxiety. This is due to the fact that many of the high energy molecules produced by the process hinder the enzymes that regulate metabolism, which produces the energy needed to power your body and generate heat. In other words, if you don't require high energy, your body won't keep making it. When there are huge amounts of carbohydrates around, the enzymes that turn the carbohydrates you consumed into glycogen and fat (to store the extra energy you don't need right now) become catalytic (mostly glucose). Therefore, the /majority of the energy from those three banana splits will be stored as fat and glycogen as it won't be needed. And that occurs as a result of the reaction to turn the sugars into energy being blocked by the lack of a demand for the energy at the time. Both enzymes that act as catalysts and those that act as inhibitors are essential to the healthy operation of our bodies.
________________________________________________________
Definitions:
Enzymes: Any of various proteins, as pepsin, originating from living cells and capable of producing certain chemical changes in organic substances by catalytic action, as in digestion.
Metabolism: The sum of physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available.
Glucose: A sugar, C6H12O6, having several optically different forms, the common dextrorotatory form (dextroglucose, or -glucose) occurring in many fruits , animal tissues and fluids, etc., and having a sweetness about one half that of ordinary sugar, and the rare levorotary form (lavoglucose, or -glucose) not naturally occurring.
Chemical reaction: Reaction, the reciprocal action of chemical agents upon each other; chemical change.
Protein: Any of numerous, highly varied organic molecules constituting a large portion of the mass of every life form and necessary in the diet of all animals and other nonphotosynthesizing organisms, composed of 20 or more amino acids linked in a genetically controlled linear sequence into one or more long polypeptide chains, the final shape and other properties of each protein being determined by the side chains of the amino acids and there chemical attachments: proteins include such specialized forms as collagen for supportive tissue, hemoglobin for transport, antibodies for immune defense, and enzymes for metabolism.
Amino acids: Any of a class of organic compounds that contains at least one amino group, -NH2, and one carboxyl, -COOH: the alpha-amino acids, RCH(NH2)COOH, are the building blocks from which proteins are constructed.
Answer:
Chemical reactions would slow down and even not proceed at all without enzymes.
Explanation:
Enzymes are protein catalysts, meaning they speed up chemical...
A 25.0 g sample of metal at
16.0 °C is warmed to 22.1 °C
by 259 J of energy.
What is the change in temperature
for the metal?
Answers
The answer to this question is change in temperature will be 6.1 and specific specific heat capacity of metal will be 1698.36.
According to the formula of Calorimetry
Q = msΔT
where, Q = Quantity of heat absorbed (in joules)
M = Mass of water sample given (in kilogram)
S = specific heat capacity of metal
ΔT = Change in temperature
We have given,
Mass as 25 gram which is equal to 0.025 Kg.
Change in temperature as 6.1
Quantity of heat absorbed as 259 J
Applying to the formula of Calorimetry
Q = msΔT
259 = 0.025 × s × 6.1
s = 1698.36
So, specific heat capacity of metal came out to be 1698.36 and the change in temperature will be 6.1
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Answer: specific heat is 1.7
Explanation:
after you answer this question itll then tell you to find the specific heat
2.3 moles of CaBr2 contains how many molecules
Answers
Avogadro's law states that in every mole of a substance, there are [tex]6.022 \times 10^{23}[/tex] molecules.
This means that in 2.3 moles, there are [tex]2.3(6.022 \times 10^{23})=\boxed{1.4 \times 10^{24} \text{ (to 2 sf)}}[/tex]
30 points!!!! Answer fast
EXPERIMENT: MAGNETISM Bar Magnet
1. Place the bar magnet on a table.
2. Put a sheet of glass or plastic over the magnet.
3. Sprinkle the iron filings over the sheet evenly.
4. On a separate paper, sketch the magnet. Show the lines made by the iron filings. Horseshoe Magnet
5. Place a horseshoe magnet on the table.
6. Put a sheet of glass or plastic over the magnet.
7. Sprinkle the iron filings over the sheet.
8. On a separate paper, sketch the magnet. Show the lines made by the iron filings. N Pole to N Pole
9. Place two bar magnets N pole to N pole with an inch between them.
10. Put a piece of glass or plastic over the magnets.
11. Sprinkle the iron filings over the glass or plastic.
12. On a separate paper sketch the magnets. Show the lines made by the iron filings. N Pole to S Pole
13. Turn one of the bar magnets around so the magnets are N pole to S pole with an inch between.
14. Sprinkle the iron filings over the glass or plastic.
15. On a separate paper sketch the magnets. Show the lines made by the iron filings.
From the information you have observed, determine the following:
What rule of magnetism is illustrated by the lines of the iron filings in Step 12?
What rule of magnetism is illustrated by the lines of the iron filings in Step 15?
Why was glass or plastic used to separate the filings from the magnets in the experiments?
Did the glass or plastic stop the passage of the magnetic lines of force?
Did the iron filings almost or completely bridge the open end of the horseshoe magnet?
Answers
The magnetism is either created inside a given element by passing some number of charges,Q across it or it is due to the interaction with a permanent magnet.
What is Magnetism ?
A physical phenomenon produced by the motion of electric charge, which results in attractive and repulsive forces between objects.
The magnet consists the characteristics of having an optimum amount of energy (P.E inside it) inside it.
As, the energy lines are either directed outwards from the north pole of the magnet, the south pole of the magnet consumes or absorbs the magnetic rays(energy lines) originated from the north pole of the magnet.
The right hand rule of magnetism is illustrated in the 12 point of the question.As the right hand rule says that there will be a net amount of magnetic field around the conductor or any current carrying element in a specific direction.
Now, the current carrying direction of the wire is in perpendicular direction to that of the magnetic field created.Point No.15 of the given question provides us the information regarding the idea of left hand rule of magnetism.
As, due to the contact between the magnetic fields.The fillings are separated from the magnets in the given experiment due to the fact there is a source for covering up the particles from getting too much exposed to the magnetic field. But, they are not able to stop the magnetic line of force,F from not penetrating its surface.
The iron fillings are present there to have a complete bridged form of connections between itself and the horseshoe magnet.
As the horseshoe magnet and the iron fillings are placed in a specified form of orientation inside the given space or region of interaction.
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What units are represented by the numbers marked on the meterstick.
Answers
Answer:
Centimeters
Centimeter
⇒ metric unit of length equal to 0.01 (1/100) of a meter
You are trying to determine the
mass of sodium chloride required to
create a 0.875 m solution in 534 g of
water. How many moles of NaCl are
required?
Answers
Answer:
Answer:
Mass = 27.291 g
Explanation:
Given data:
Mass of sodium chloride = ?
Mass of water = 534 g
Molality = 0.875 m
Solution:
Molality:
It is the number of moles of solute into kilogram of solvent.
Formula:
Molality = number of moles of solute / kilogram solvent
Mathematical expression:
m = n/kg
Now we will convert the g into kg.
Mass of water = 534 g× 1kg/1000 g = 0.534 kg
Now we will put the values in formula.
0.875 m = n / 0.534 kg
n = 0.467 mol
Now we will calculate the mass of sodium chloride:
Mass = number of moles × molar mass
Mass = 0.467 mol × 58.44 g/mol
Mass = 27.291 g
Can you find the difference between the following changes? why? a)rolling of chapati from dough b) baking of chapati
Answers
Answer:
They have different temperatures.
Explanation:
Answer:
a. when we are rolling the dough it only changes the shape, its a physical change.
b. we cant change the shape once its cooked, its a chemical change
Explanation:
hope it helps
What mass of solute will dissolve in 100g of water at the following temperatures?
• KNO3 at 70°C =
• NaCl at 100°C=
• NH₂Cl at 90°C=
Answers
[tex]KNO_3[/tex] at 70°C = 130 gram
NaCl at 100°C= 40 gram
NH₂Cl at 90°C= 70 gram
What is solubility?Solubility is defined as the maximum amount of a substance that will dissolve in a given amount of solvent at a specified temperature.
Amount of a substance (called the solute) that dissolves in a unit volume of a liquid substance (called the solvent) to form a saturated solution under specified conditions of temperature and pressure. Solubility is expressed usually as moles of solute per 100 grams of solvent.
Hence,
[tex]KNO_3[/tex] at 70°C = 130 gram
NaCl at 100°C= 40 gram
NH₂Cl at 90°C= 70 gram
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what is the percent composition of each element within the compound
Answers
Answer:
The percentage composition of a given compound is defined as the ratio of the amount of each element to the total amount of individual elements present in the compound multiplied by 100. Here, the quantity is measured in terms of grams of the elements present.
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What is the mass percent of Fe in iron(II) chloride
Answers
28.090%
hope its helpful >~
Which of the following reactions would result in decreased entropy?
Q A. CO,(s) → CO2(g)
OB. H₂O(g) → H₂O()
OC. 203(g) → 30₂(g)
D. N₂204(g) → 2NO₂(g)
Answers
The reaction that would result in decreased entropy is : ( A ) CO(s) → CO2(g)
What are Endothermic reactionsReactions that absorb heat from its surroundings are known as endothermic reactions, Endothermic reactions result in a decreased entropy as the temperature of the surrounding becomes lower than the temperature of the container where the reaction occurs.
Examples of endothermic reactions are : melting and evaporation which results in the change of state from solid to liquid or from solid to gaseous state.
Hence we can conclude that The reaction that would result in decreased entropy is : ( A ) CO(s) → CO2(g)
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Pls tell me how to solve this!
Answers
Answer:
12 seconds
Explanation:
Time taken by 50cm³ of oxygen to diffuse from pinhole
= 1 minute = 60 seconds
⠀
⠀
[tex] \textsf{ Rate of oxygen} \sf (O_2) = \frac{50}{60} [/tex]
⠀
⠀
⠀
Let time taken by 50cm³ of hydrogen to diffuse from pinhole = t seconds
⠀
⠀
[tex] \textsf {Rate of hydrogen } \sf(H_2) = \frac{50}{t} [/tex]
⠀
⠀
⠀
According to the formula
[tex] \sf \frac{Rate \: of \: hydrogen(H_2)}{Rate \: of \: oxygen(O_2) } = \sqrt{ \frac{Molar \: mass \: of \: O_2}{Molar \: mass \: of \: H_2} } [/tex]
⠀
⠀
[tex] \large \sf \frac{50}{t} \div \frac{50}{60} = \sqrt{ \frac{\cancel{32}\small 16}{\cancel2} } \\ \\ \sf \large \frac{ \cancel{50}}{t} \times \frac{60}{ \cancel{50}} = \sqrt{16} \\ \\ \sf \large \frac{60}{t} = 4 \\ \\ \sf \large \frac{ \cancel{60} \: \small12}{ \cancel4} = t \\ \\ \large \underline{ \boxed{ \tt t = 12 \: seconds}}[/tex]
⠀
⠀
⠀
Henceforth, the time taken by 50cm³ of hydrogen to diffuse is 12 seconds.⠀
⠀
Thank you!7 on the pH scale represents what?
Answers
Answer:
seven on the ph scale is the neutral point
Explanation:
The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.
some one please help me
Answers
Answer:
measure their densities
The bonds of the product store 27 KJ more energy than the bonds of the reactants how is energy conserved during this reaction
A.The reaction creates 27 kj of energy when bonds form.
B.The reaction system absorbs 27 kj of energy from the surroundings.
C.The reaction uses up 27 kj of energy when bonds break.
D.The surroundings absorb 27 kj of energy from the reaction system.
ANSWER: the answer is b
Answers
If the bonds of the product store 27 KJ more energy than the bonds of the reactants, It means the surroundings absorb 27 kj of energy from the reaction system Hence, Option (D) is the correct answer
What is the Exothermic reaction ?An exothermic process releases heat, causing the temperature of the immediate surroundings to rise.
The bonds of the product store 27 KJ more energy than the bonds of the reactants, It means that energy has been absorbed by the surrounding as the product formed is more stable due to more stronger bond
This can be inferred from more stored energy with in the bonds and Thus, It is a exothermic reaction.Hence, Option (D) is the correct answer
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Determine the quantity of each atom in a compound
1. CaCO3
2.3 BaF2
3.4 H₂PO4
4. Sr(OH)₂
5. 3 Al2(Cr₂O7)3
Answers
2. 5 atoms
3. 11 atoms
4. 5 atoms
5. 18 atoms
6.0 mol NaOH reacts with
9.0 mol H3PO4 according to
the equation below:
3NaOH + H3PO4 → 3H₂O + Na3PO4
How many moles of Na3PO4 form from
6.0 mol NaOH?
[?] mol Na3PO4
Round your answer to the tenths place.
Answers
2 moles of Na3PO4 form from 6.0 mol NaOH. Details about stoichiometry can be found below.
How to calculate number of moles?The number of moles of a substance can be calculated stoichiometrically as follows:
3NaOH + H3PO4 → 3H₂O + Na3PO4
According to this equation,
3 moles of NaOH produces 1 mole of Na3PO4
This means that 6 moles of NaOH will produce 6/3 = 2 moles of Na3PO4
Therefore, 2 moles of Na3PO4 form from 6.0 mol NaOH.
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