Answer:
B.) 36.0 grams
Explanation:
To find the mass of water, you need to (1) convert grams H₂ to moles (using the molar mass), then (2) convert moles H₂ to moles H₂O (using mole-to-mole ratio from reaction coefficients), and then (3) convert moles H₂O to grams (using the molar mass). It is important to arrange the conversions in a way that allows for the cancellation of units.
Molar Mass (H₂): 2(1.008 g/mol)
Molar Mass (H₂): 2.016 g/mol
Molar Mass (H₂O): 2(1.008 g/mol) + 15.998 g/mol
Molar Mass (H₂O): 18.014 g/mol
2 H₂ + O₂ -----> 2 H₂O
^ ^
4.0 g H₂ 1 mole 2 moles H₂O 18.014 g
--------------- x ---------------- x ------------------------ x --------------- = 36 g H₂O
2.016 g 2 moles H₂ 1 mole
Find q when 22.0 g of water is heated from 29.0°C to 100.0°C.
Answer:
6530 J
Explanation:
To find the value of "Q", you need to use the following equation:
Q = mcΔT
In this equation,
-----> Q = energy/heat (J)
-----> m = mass (g)
-----> c = specific heat capacity (J/g°C)
-----> ΔT = change in temperature (°C)
The specific heat capacity of water is 4.182 J/g°C. You can plug the given values into the equation and solve for "Q". The final answer should have 3 significant figures because the lowest number of sig figs among the given values is 3.
Q = ? J c = 4.182 J/g°C
m = 22.0 g ΔT = 100.0 °C - 29.0 °C = 71.0 °C
Q = mcΔT
Q = (22.0 g)(4.182 J/g°C)(71.0 °C)
Q = 6530 J
Approximately 6461.9 joules of heat are required to heat 22.0 g of water from 29.0°C to 100.0°C.
Given:
mass of water, m = 22.0 g
Specific heat capacity of water, c = 4.184 J/g°C
Change in temperature, ΔT= 100.0°C - 29.0°C = 71.0°C
The formula for the heat absorbed or released during a temperature change:
q = m × c ×ΔT
where:
q = heat (in joules, J)
m = mass of the substance (in grams, g)
c = specific heat capacity of the substance (in J/g°C)
ΔT = change in temperature (in °C)
For water, the specific heat capacity is approximately 4.184 J/g°C.
Putting the values into the formula and calculating q:
q = 22.0 g × 4.184 J/g°C ×71.0°C
q ≈ 6461.9 J
Thus, approximately 6461.928 joules of heat are required.
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Which of the following is a property of bases?
A. They are found in fruit.
B. They pollute the air.
C. They taste sour.
D. They are slippery.
A p e x
Answer: D. They are slippery.
Explanation:
Only one of the following is a property of bases. This is option D, they are slippery. Bases usually feel slippery, which can also be described as "soapy." Many soaps, shampoos, detergents, etc contain bases.
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Can someone please help me identify these functional groups? Please it’s extremely urgent
Answer:
See the image below for he circled and labeled functional groups.
*Keep in mind that all of the molecules technically contain alkanes.
OMG PLEASE HELP!! THIS IS IMPORTANT!!
which statements describe the cell membrane? Check all that apply
A.) The cell membrane is very selective.
B.) The cell membrane lets anything enter the cell.
C.) The cell membrane lets anything leave the cell.
D.) The cell membrane is protective layer surrounding a cell.
E.) The cell membrane allows waste to leave the cell.
Answer:
The cell membrane is protective layer surrounding a cell.
Answer:
options D is correct
....hope it helps you
Calculate the vapor pressure of a solution of 32.5 g of glycerol (C3H8O3) in 500.0 g of water at 25°C. The vapor pressure of water at 25°C is 23.76 torr. (Assume ideal behavior.)
The vapor pressure is obtained as 23.47 torr.
What is the vapor pressure?Given that; p = x1p°
p = vapor pressure of the solution
x1 = mole fraction of the solvent
p° = vapor pressure of the pure solvent
Δp = p°(1 - x1)
Δp =x2p°
Δp = vapor pressure lowering
x2 = mole fraction of the of the solute
Number of moles of glycerol = 32.5 g/92 g/mol = 0.35 moles
Number of moles of water = 500.0 g/18 g/mol = 27.8 moles
Total number of moles = 0.35 moles + 27.8 moles = 28.15 moles
Mole fraction of glycerol = 0.35 moles/28.15 moles = 0.012
Mole fraction of water = 27.8 moles/28.15 moles =0.99
Δp = 0.012 * 23.76 torr
Δp = 0.285 torr
p1 = p° - Δp
p1 = 23.76 torr - 0.285 torr
p1 = 23.47 torr
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Which of the following best describes how an ionic compound dissolves in water?
Group of answer choices
A. It separates into individual molecules and is a non-electrolyte.
B. It breaks into its individual ions and is an electrolyte.
C. It separates into individual molecules and is an electrolyte.
D. It breaks into its individual ions and is a non-electrolyte.
The correct answer choice which best describes how an ionic compound dissolves in water is that It breaks into its individual ions and is an electrolyte.
Option B is the correct answer
What is ionic bonding?This is type of chemical bonding which involves the transfer of valence electron from a metallic element to a non-metallic element
So therefore, The correct answer choice which best describes how an ionic compound dissolves in water is that It breaks into its individual ions and is an electrolyte.
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What is the half life of sodium-24 if after 12 days the sample has a mass of 1.2 g from an initial mass of 9.6 g?
Group of answer choices
A. 36 days
B. 12 days
C. 24 days
D. 4 days
The Haber process is a method to produce ammonia from hydrogen and nitrogen gases. The reaction is:
N2(g) + 3 H2(g) <--> 2 NH3(g)
If hydrogen gas is added after the reaction has reached equilibrium, the reaction will:
Group of answer choices
A. Need more information
B. Stop. All of the nitrogen gas has been used up.
C. Shift to the left to produce more reactants
D. Shift to the right to produce more product
Answer:
D.) Shift to the right to produce more product
Explanation:
When more reactants are added to a reaction, the equilibrium will shift to the product side to restore the balance.
As such, when H₂ (a reactant) is added, the reaction will shift to the product side, resulting in an increase of NH₃.
What is the [H3O+] if the [OH-] is 1 x 10 -11 ?
Taking into account the definition of pH and pOH, [H₃O⁺] will be 1×10⁻³ M.
Definition of pHpH is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.
The pH is defined as the negative base 10 logarithm of the activity of hydrogen ions, that is, the concentration of hydrogen ions or H₃O⁺:
pH= - log [H⁺]= - log [H₃O⁺]
Definition of pOHSimilarly, pOH is a measure of hydroxyl ions in a solution and is expressed as the logarithm of the concentration of OH⁻ ions, with the sign changed:
pOH= - log [OH⁻]
Relationship between pH and pOHThe following relationship can be established between pH and pOH:
pOH + pH= 14
Hydroxide ion concentrationIn this case, you know that [OH⁻]= 1×10⁻¹¹ M.
Replacing in the definition of pOH, it is calculated as:
pOH= - log (1×10⁻¹¹ M)
Solving;
pOH= 11
Replacing in the relationship established between pH and pOH, the pH can be calculated as:
pH + 11= 14
Solving:
pH= 14 - 11
pOH= 3
Replacing in the definition of pH the concentration of H₃O⁺ ions is obtained:
- log [H₃O⁺]= 3
Solving:
[H₃O⁺]= 10⁻³
[H₃O⁺]= 1×10⁻³ M
In summary, [H₃O⁺] will be 1×10⁻³ M.
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H2O Is water. H10O5 Is Monohydrate trihydrate. What Is the chemical compound name for H50O25?
Answer:
THERE IS NO such compound
Explanation:
Why does an aerial require two explosions of black powder
Answer:
to launch aerials and also causes the explosions necessary for special effects like noise or colored light.
Explanation:
The theory of what an atom looks like has evolved over time. From the ancient Greeks, to Dalton, to Rutherford—no idea was exactly the same. However, as more information is gathered, new ideas can build on the old. Sometimes new ideas can completely replace the old ones. Even today, there may be new advances that have changed our understanding of the atom that are not reflected in this course.
Answer one of the following prompts to begin your discussion:
You claim that the atomic model should not be continually changed. What reasoning would you give someone to help them understand your claim?
You claim that a new atomic model should always build on an old one. What reasoning would you give someone to help them understand your claim?
You claim that a new atomic model should completely replace an old one. What reasoning would you give someone to help them understand your claim?
You claim that the continuous evolution of the atomic model is beneficial, but you think it should be a mix of the old and the new. What reasoning would you give someone to help them understand your claim?
To being my discussion, I claim that a new atomic model should always build on an old one with the following reasons of mine. That is option B.
What is an atomic model?An atomic model is a model that describes how the interior of an atom looks like. This first atomic model was developed by William Thomson.
To start my discussion, I claim that a new atomic model should always build on an old one with the following reasons of mine:
The modern scientists exploited the ideas of the ancient scientists to arrive at a better atomic model.This method is proven the the works of Bohr in the Bohr atomic model which relied on quantum mechanics, built upon the Rutherford model to explain the orbits of electrons.Learn more about atoms here:
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perform the following operation and express the answer in scientific notation 9.80x10^-3 + 1.60 x 10^-4
answer = 9.96x10^-3
I hope that help you
Select the correct answer. A ball hits a wall. What is true about the magnitude of the force experienced by the ball compared with the force experienced by the wall? A. The ball experiences more force than the wall. B. The ball experiences less force than the wall. C. The ball and the wall experience the same force. D. The ball experiences half the force of the wall.
Answer:
C
Explanation:
For every action there is an equal but opposite reaction..... the forces are the same
How many grams of calcium chloride are needed to produce 1.50 g of potassium chloride? cacl2(aq) k2co3(aq) → 2 kcl(aq) caco3(aq)
Answer:
1.12 g CaCl₂
Explanation:
To find the mass of calcium chloride, you need to (1) convert grams KCl to moles KCl (via molar mass), then (2) convert moles KCl to moles CaCl₂ (via mole-to-mole ratio from equation coefficients), and then (3) convert moles CaCl₂ to grams CaCl₂ (via molar mass). It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs to match the sig figs of the given value.
Molar Mass (KCl): 39.098 g/mol + 35.453 g/mol
Molar Mass (KCl): 74.551 g/mol
Molar Mass (CaCl₂): 40.078 g/mol + 2(35.453 g/mol)
Molar Mass (CaCl₂): 110.984 g/mol
1 CaCl₂(aq) + K₂CO₃(aq) -----> 2 KCl(aq) + CaCO₃(aq)
1.50 g KCl 1 mole 1 mole CaCl₂ 110.984 g
----------------- x ----------------- x ----------------------- x ------------------ =
74.551 g 2 moles KCl 1 mole
= 1.12 g CaCl₂
3. Calculate the molarity of the HCI solution if 0.074 mol of HCl is dissolved in water to
make 2000 mL of the solution. Also calculate the pH of this solution. Hint: In case of
strong acids the [H3O+] is same as the molarity of acid solution.
Answer:
Molarity = 0.037 M
pH = 1.43
Explanation:
First, you need to calculate the molarity. After converting mL to L, you can plug the values into the molarity equation and simplify.
2,000 mL / 1,000 = 2 L
Molarity (M) = moles / volume (L)
Molarity = 0.074 moles / 2 L
Molarity = 0.037 M
You can plug the molarity of the hydrogen ion into the pH equation to find the pH. Remember that H₃O⁺ and H⁺ can be considered the same thing. Since HCl dissociates into just one H⁺ and one Cl⁻, the molarity of the HCl solution is the same as the molarity of the H⁺.
pH = -log[H⁺]
pH = -log[0.037]
pH = 1.43
Which of the following is the name given to a carbohydrate containing one monomer?
Disaccharide
Decasaccharide
Monosaccharide
Polysaccharide
Answer:
Disaccharide
Explanation:
When two monomers combine, a disaccharide is formed. Also, the prefix "di" is two therefore the answer must be a disaccharide
Write a balanced equation for the following redox reaction using the oxidation number method:
Fe 2+ (aq) + H2O2 (aq) + H+ (aq) ---> Fe 3+ (aq) + H2O (l)
The balanced redox reaction equation is 2Fe^2+ (aq) + H2O2 (aq)+2H + (aq) → 2Fe^3+ (aq)+2e + 2H2O(l).
What is a redox reaction equation?A redox reaction equation is one in which there is a loss or gain of electrons. We can see that the oxidation number of some species is increased while the oxidation number of some species is reduced.
The oxidation half equation is written as; 2Fe^2+ (aq)→2Fe^3+ (aq)+2e
The reduction half equation is written as; H2O2 (aq)+2H + (aq)+2e →2H2O(l).
Thus, the overall balanced redox reaction equation is written as;
2Fe^2+ (aq) + H2O2 (aq)+2H + (aq) → 2Fe^3+ (aq)+2e + 2H2O(l).
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The picture shows two containers filled with a gas.
Two equally sized containers are shown with tight lids and each container has a thermometer. The container on the left is labeled A and the one on the right is labeled B. The thermometer inside container B shows a higher temperature than the thermometer inside container A.
Which statement is correct?
The average kinetic energy of the gas particles is greater in container B because it has a higher temperature.
What is temperature?The term temperature refers to a measure of the average kinetic energy of the molecules of body. This means that molecules that are at high temperature tend to move faster than the molecules that are at low temperature.
As such, the higher temperature of the molecules of the gas in B shows that the molecules in B are faster than those in A thus the correct statement is; "the average kinetic energy of the gas particles is greater in container B because it has a higher temperature."
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Missing parts;
The picture shows two containers filled with a gas.
Two equally sized containers are shown with tight lids and each container has a thermometer. The container on the le is labeled A and the one on the right is labeled B. The thermometer inside container B shows a higher temperature than the thermometer inside container A.
Which statement is correct?
The average kinetic energy of the gas particles is greater in container A because it has a lower temperature.
The average kinetic energy of the gas particles is greater in container B because it has a higher temperature.
The gas particles in both containers have the same average kinetic energy because t have the same volume.
The gas particles in both containers have the same average kinetic energy because t have equal number of particles.
Given the reaction: A + B <--> C + D
The concentrations at equilibrium are [A] = 1 M, [B] = 1 M, [C] = 2 M, and [D] = 2 M. What is the value of the equilibrium constant (K)?
Group of answer choices
A. 4.0
B. 2.0
C. 1.0
D. 0.25
Answer:
A.) 4.0
Explanation:
The general equilibrium expression looks like this:
[tex]K = \frac{[C]^{c} [D]^{d} }{[A]^{a} [B]^{b} }[/tex]
In this expression,
-----> K = equilibrium constant
-----> uppercase letters = molarity
-----> lowercase letters = balanced equation coefficients
In this case, the molarity's do not need to be raised to any numbers because the coefficients in the balanced equation are all 1. You can find the constant by plugging the given molarities into the equation and simplifying.
[tex]K = \frac{[C]^{c} [D]^{d} }{[A]^{a} [B]^{b} }[/tex] <----- Equilibrium expression
[tex]K = \frac{[2 M] [2 M]}{[1 M] [1 M] }[/tex] <----- Insert molarities
[tex]K = \frac{4}{1 }[/tex] <----- Multiply
[tex]K = 4[/tex] <----- Divide
Question 6
How many mole of potassium hydroxide are in 27.5 mL of 0.250 M
potassium hydroxide solution?
Answer:
0.00688 moles
Explanation:
The molarity ratio looks like this:
Molarity = moles / volume (L)
After you convert mL to L, you can plug the values into the equation and simplify to find moles.
27.5 mL / 1,000 = 0.0275 L
Molarity = moles / volume <----- Molarity ratio
0.250 M = moles / 0.0275 L <----- Insert values
0.00688 = moles <----- Multiply both sides by 0.0275
How much heat is added if .1915g of water increases in temperature by .592 degrees C
If the temperature of a gas is increased from 20°C to 35°C, what is the new pressure if the original pressure was 1.2 atm? Assume that volume is constant.
A. 0.6 atm
B. 1.3 atm
C. 1.0 atm
D. 2.6 atm
The new pressure of the gas would be = 2.1 atm.
Calculation of gas pressureThe initial temperature of the gas(T1) = 20°C
The final temperature of the gas(T2)= 35°C
The volume= constant
The Original pressure (P1) = 1.2atm
The new pressure (P2) =?
Using the gas law P1/T1 = P2/T2
Make P2 the subject of formula;
P2= P1×T2/T1
P2= 1.2 × 35/20
P2= 42/20
P2= 2.1 atm
Therefore, the new pressure of the gas would be = 2.1 atm.
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The value of x in Fe(NH₂)₂(SO4)₂ xH₂O can be found by determining the amount in mol of sulfate in the compound. A 0.982 g sample was dissolved in water and excess BaCl₂(aq) was added. The precipitate of BaSO, was separated and dried and found to weigh 1.17 g.
a) Calculate the amount, in mol, of BaSO4 in the 1.17 g of precipitate.
b) Calculate the amount, in mol, of sulfate in the 0.982 g sample of Fe(NH₂)₂(SO4)₂ XH₂O.
c) Calculate the amount, in mol, of iron in the 0.982 g sample of Fe (NH₂)₂(SO4)2 xH₂O.
d) Determine the mass, in g, of the following present in the 0.982 g sample of Fe(NH₂)₂(SO₂)₂ xXH₂O:
(i) iron (ii) ammonium (iii) sulfate.
e) Use your answer from part (d) to determine the amount in mol of water present in the 0.982 g sample of Fe(NH₂)₂(SO4)₂ xH₂O.
Answer: e
Explanation: ima be real i searched it up lol
Calculate the molarity of a solution that has 18.0 g of glucose, C6H12O6, dissolved in 80.0 g of water.
Answer:
1.25 M
Explanation:
In this case, the solute is C₆H₁₂O₆ and the solvent is H₂O.To find the molarity, you need to (1) convert the mass C₆H₁₂O₆ to moles (via molar mass), then (2) convert grams H₂O to liters H₂O, and then (3) calculate the molarity.
(Step 1)
Molar Mass (C₆H₁₂O₆): 6(12.011 g/mol) + 12(1.008 g/mol) + 6(15.998 g/mol)
Molar Mass (C₆H₁₂O₆): 180.15 g/mol
18.0 g C₆H₁₂O₆ 1 mole
------------------------ x ----------------- = 0.0999 moles C₆H₁₂O₆
180.15 g
(Step 2)
1,000 grams = 1 L
80.0 g H₂O 1 L
-------------------- x ------------------- = 0.0800 L H₂O
1,000 g
(Step 3)
Molarity = moles solute / volume solvent (L)
Molarity = 0.0999 moles / 0.0800 L
Molarity = 1.25 M
A weak monoprotic acid is titrated with 0.100 MNaOH. It requires 50.0 mL of the NaOH solution to reach the equivalence point. After 25.0 mL of base is added, the pH of the solution is 3.52.
Estimate the pKa of the weak acid.
Express your answer using three significant figures.
pKa value =4.76Ka
=1.73×10 −5 !! PH=4−PKa=14−4.76=9.24 for a weak monoprotic acid is titrated with 0.100 M NaOH. It requires 50.0 mL of the NaOH solution to reach the equivalence point. After 25.0 mL of the base is added, the pH of the solution is 3.52.
One way to describe an acid's potency is by its pKa value. The acid dissociation constant, or pKa, is the negative log of the pKa value. A stronger acid is indicated by a lower pKa value. In other words, a lower value means that the acid dissociates in water more completely.
The logarithm of Ka's negative value is denoted as pKa. The logarithmic inverse of the H+ concentration is pH. Acidity indication. An acid's pKa value tells you if it's a strong acid or a weak acid. The pH scale shows how acidic or alkaline a system is.
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how did the boiling point of plain water compare to that of water with salt? Compared to water with sugar?
The boiling point of plain water is less than the boiling point of both salt and sugar water.
What is boiling point?Boiling point can be defined as the point when the pressure exerted by the surroundings upon a liquid is equal to the pressure exerted by the vapour of the liquid.
The boiling point of plain water is 100°C which increases upon addition of solute substances such as salt and sugar.
But salts are usually made up of ionic bonds while sugar are made up of covalent bonds. This means that more energy would be required to boil salt solution due to its ionic bonds.
Therefore, the boiling point of salt water is highest following sugar water before plain water which is the lowest.
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You have a 473 mL glass of lemonade with a concentration of 2.37 M.
The lemonade sits out on your counter for a couple of days, and 150 mL of water evaporates from the glass.
What is the new concentration of the lemonade?
The new concentration of the lemonade solution, given the data from the question is 3.47 M
Data obtained from the questionFrom the question given above, the following data were obtained:
Molarity of stock solution (M₁) = 2.37 MVolume of stock solution (V₁) = 473 mLVolume of water that evaporated = 150 mLVolume of new solution (V₂) = 473 - 150 = 323 mL Molarity of new solution (M₂) =? How to determine the molarity of the new solutionThe molarity of the new solution can be obtained by using the dilution formula as shown below:
M₁V₁ = M₂V₂
2.37 × 473 = M₂ × 323
1121.01 = M₂ × 323
Divide both side by 323
M₂ = 1121.01 / 323
M₂ = 3.47 M
Thus, the concentration of the new solution is 3.47 M
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A student investigated the enthalpy of combustion (deltaHc) of methanol under standard conditions using the apparatus shown in the diagram. The measurements the student recorded are shown in the table. Use this information to answer the questions below.
_Clamp stand
_
_ _I__Thermometer
_ I I Beaker
_ I-----I
_ I___I Water
_ I Wick
_ -----
_ I I
_ ----- Alcohol
_ I __I
______________
Alcohol mass before burning: 80.6g
Alcohol mass after burning: 75.9g
Water heated: 100g
Methanol Mr: 32
Initial temperature of water: 21.5 C
Final temperature of water: 32.4 C
Enthalpy of combustion of 1 mole of methanol:
The student wanted to know if the value obtained in part 1 is similar to that calculated using average bond enthalpy data.
a) Using the balanced equation and the data in the table below, calculate the theoretical enthalpy of combustion.
Note: you will need to include the enthalpy of vaporisation for the liquid components which are also given.
CH3OH(l) + 1.5O2(g) → CO2(g) + 2H2O(l)
Average Bond Enthalpies KJmol-1
C-H 412
C-C 348
C-O 358
O=O 496
C=O 743
O-H 463
Enthalpy of vaporisation KJmol-1
Methanol 35
Water 41
b) Suggest some reasons as to why this value is different to the one obtained in the practical. (What are the reasons that the the theoretical and actual enthalpy changes are different)
The Molar enthalpy of combustion of methanol obtained from the practical is -31.02 kJ/mol.
The molar enthalpy of combustion from bond energies, ΔH is -543 kJ/mol
The differences in the values could be due to:
Heat losses from the calorimeter to the surroundingsInaccurate measurements of mass and temperature changesWhat is the enthalpy theoretical and actual enthalpy of combustion of methanol?The actual enthalpy of combustion of methanol is calculated from the data obtained from the laboratory work.
The enthalpy of combustion is equal to the heat energy given off from the combustion of methanol.
Quantity of heat gained by water , q = -mcθ
where:
m = massc = specific heat capacityθ = temperature changemass of water heated = 100 g
specific heat capacity of water = 4.18 J/g/°C
temperature change = 32.4°C - 21.5°C = 10.9°C
q = -(100 * 4.18 * 10.9) J
q = - 4556.2 J
moles of methanol reacted = mass/molar mass
mass of methanol = 80.6 - 75.9 = 4.7 g
molar mass of methanol = 32 g/mol
moles of methanol = 4.7/32 = 0.14687 moles
Molar enthalpy of combustion of methanol = -4556.2 J/0.14687 mole
Molar enthalpy of combustion of methanol = -31.02 kJ/mol
Calculating molar enthalpy of combustion from bond energies:
ΔH = sum of the bond energies of bonds broken - sum of the bond energies of the bonds formedSum of bond energies of bonds broken = (3 * 412) + 358 + 463 + (1.5 * 496) + 35 = 2836 kJ/mol
Sum of bond energies of bonds formed = (2 * 743) + 2(2 * 463) + 41 = 3379 kJ/mol
ΔH = 2836 kJ/mol - 3379 kJ/mol
ΔH = -543 kJ/mol
The value obtained from the practical is less than that from the bond energies
b. The possible reasons for the difference in value obtained from the practical is less than that from the bond energies include:
Heat losses from the calorimeter to the surroundingsInaccurate measurements of mass and temperature changes.In conclusion, the molar enthalpy of combustion of methanol is negative since heat is given off during the reaction.
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Give the answer the problem below to the correct number of significant figures. Explain your results.
(329.5/0.45)-23.2
The correct number of significant figures gotten from the result of (329.5/0.45)-23.2 is infinite because there is no uncertain digit as a result of the answer being 709.022222222 when calculated.
What is a Significant figure?These refers to the digits which contributes to the degree of accuracy of a value and is usually counted starting from the non zero digits. In cases where the zero is between other numbers it is regarded as being significant such as 70.0111 in which the number of significant figures is six.
The result gotten from the expression (329.5/0.45)-23.2 is 709.022222222 which has a recurring decimal thereby making it difficult to calculate the number of recurring decimal.
Therefore it has infinitely many significant figures because there is no uncertain digit.
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