Answers
The balanced chemical equation using the smallest possible whole number stoichiometric coefficients is:
\(3Br_{2} + I_{2} \rightarrow 2IBr_{3}\)
What is a balanced equation?A balanced chemical equation is an equation in which the the moles of atoms in of elements of reactants is equal to mole of atoms of elements of the product.
The balanced chemical equation of the reaction is given below:
\(3Br_{2} + I_{2} \rightarrow 2IBr_{3}\)
Therefore, the balanced chemical equation using the smallest possible whole number stoichiometric coefficients is given above.
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Related Questions
assuming that the uranium atoms are spherical and that their metallic radius is such that their size is determined by the unit cell dimensions (i.e., equal size spheres that touch each other as constraint by the unit cell) determine the metallic radius of uranium atoms at room temperature.
Answers
Uranium is often known as a silvery-white metal in the actinide series of the periodic table. Uranium is softly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years.
Uranium has the giant atomic weight of the primordially occurring elements and Its hardness is about 70% higher than that of lead and slightly lower than that of gold or tungsten.
Uranium is often found at low levels (a few ppm – parts per million) in all rocks, soil, water, plants, and animals (including humans). generally, Uranium occurs also in seawater and can be recovered from the ocean water.
Significant concentrations of uranium occur in some elements such as uraninite (the most common uranium ore), phosphate rock deposits, and other minerals.
Uranium is a chemical element with atomic number 92 which means there are ninety-two protons in its nucleus.
There are a total number of protons in the nucleus is called the atomic number of the atom and is denoted by the symbol Z. The total amount of electrical charge of the nucleus is, therefore, +Ze, where e (elementary charge) equals 1,602 x 10-19 coulombs.
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other m Ammonium nitrate decomposes to nitrogen(1) oxide and water. 9. Some oxides of nitrogen are atmospheric pollutants. and oxygen. Revision Exercise When compound X is heated, a red-brown gas is evolved and a yellow residue is left on cooling. Name: (i) The red-brown gas. (ii) The ions present in the residue. (ui) Compound X.
Answers
We can determine the following based on the provided information:
Metal nitrate A is a compound that, when heated, transforms into colourless gas, brown gas B, and a metal oxide with a yellowish brown hue. B. C: Colourless petrol C. B: Brown petrol C. D: Compound D, a yellow precipitate produced by the reaction of potassium iodide with an aqueous solution of compound A.
We may deduce that A is probably lead nitrate (Pb(NO3)2) because lead is frequently used in soldering alloys and the metal contained in A is utilised in an alloy for soldering purposes.
Identifications:
Lead nitrate, or Pb(NO3)2,
N2O: Nitrogen dioxide
B: Carbon (CO)
D: PbI2, or lead iodide.
Thus, this can be concluded regarding the given scenario.
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Your question seems incomplete, the probable complete question is:
A metal nitrate A on heating gives a yellowish brown coloured metal oxide along with brown gas B and a colourless gas C. An aqueous solution of A on reaction with potassium iodide forms a yellow precipitate of compound D. Identify A, B, C and D. Also, identify the types of reactions taking place. Metal present in A is used in an alloy which is used for soldering purposes.
Spell out the full name of the compound?
Answers
what is S3F4 chemical name
Answers
Use of diamonds based on chemical properties
Answers
It is incorporated with audio equipment to enhance sound quality. Diamonds are hard and easily vibrate at fast speeds, which results in high-quality sound. High-end recorders and DJ equipment both use it. Nanodiamonds have potential health benefits.
The carbon atoms in diamond are organised in a diamond cubic crystal lattice, making it an allotrope of carbon. Diamond is the material with the highest heat conductivity and hardness among all naturally occurring substances. Diamond is a particularly important component of industrial cutting and polishing equipment due to its unique qualities.
These days, diamond exfoliators and face products are accessible. Diamond dust is now being used in cosmetics, thus the price will undoubtedly be exorbitant. Diamond is used in beauty products to minimize wrinkles, etc.
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3.00 L of a gas is collected at 35.0 C and 0.93 atm. What is the volume at STP
Answers
Hope this helped have a great day :)
Joan wrote a science fiction story where the people only texted each other, and never talked. They still had vocal chords, but they could no
longer make sounds. Their vocal chords were
Answers
Answer:
Vestigial
Explanation:
The retention of genetically determined traits or structures that have partially or completely lost their ancestral purpose in a specific species is known as vestigiality. In most cases, evaluating the vestigality requires comparison with comparable traits in closely related species.
crude oil is in soild form true or false
Answers
Answer:
false
Explanation:
it is a complex mix of hydrocarbons that caan only occur in liquid, gaseous, or solid form. Crude oil is often liquid form. But also includes gas and solid's known as which is found only in certain sands, so false is you're answer.
Write the chemical formula for this molecule
Answers
Electrons have been used to determine molecular structure by diffraction. Calculate the speed and kinetic energy of an electron for which the wavelength is equal to a typical bond length, namely, 0.1252 nm.
Answers
The velocity v of an electron = 5.817*10^6 m/s .
The kinetic energy of an electron = 154*10^19 J .
Energy is the quantitative property that is transferred to a frame or to a bodily system, recognizable in the overall performance of labor and in the shape of heat and light. strength is a conserved amount—the law of conservation of electricity states that power may be transformed in shape, but now not created. Energy is defined because of the potential to do paintings. system. The electricity stored in an object due to its function and top is referred to as capability power and is given by means of the formulation.
Velocity is the directional pace of an item in motion as an illustration of its charge of change in function as observed from a specific body of reference and as measured by way of a particular trend of time.
Wavelength given (w) = 0.1252 nm .
Mass of electron (m) = 9.1*10^-31 kg .
h (.Planck constant) = 6.626*10^-34 Js
Using formula :
w = h/mv .
V- velocity,
m - mass.
h - Planck constant .
v = h/mw
v = 6.626*10^-34 js/9.1*10^-31 kg*1.252*10^-10 m .
v = 6.626*10^-34 Js/11.39*10^-41 .
v = 6.626*10^-34 Js/1.139*10^-40 .kg m
v = 5.817*10^6 m/s .
Energy = mv^2/2
= 9.1*10^-31*(5.817*10^6)^2/2
= 308*10^19/2 = 154*10^19 J .
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What is a neutralization reaction?
Answers
Calculate the mass of CaCl2•2H2O required to make 100.0 mL of a 0.100 M solution. Each of the calculations below will take you through the necessary steps. You will be asked to show your answer and calculations for each. Calculate the moles of CaCl2•2H2O in 100.0 mL of a 0.100 M solution Enter your answer:
Answers
Answer:
The mass is 1.4701 grams and the moles is 0.01.
Explanation:
Based on the given question, the volume of the solution is 100 ml or 0.1 L and the molarity of the solution is 0.100 M. The moles of the solute (in the given case calcium chloride dihydride (CaCl2. H2O) can be determined by using the formula,
Molarity = moles of solute/volume of solution in liters
Now putting the values we get,
0.100 = moles of solute/0.1000
Moles of solute = 0.100 * 0.1000
= 0.01 moles
The mass of CaCl2.2H2O can be determined by using the formula,
Moles = mass/molar mass
The molar mass of CaCl2.2H2O is 147.01 gram per mole. Now putting the values we get,
0.01 = mass / 147.01
Mass = 147.01 * 0.01
= 1.4701 grams.
The mass should be considered as the 1.4701 grams and the moles should be 0.01.
Calculation of the mass and moles:Since we know that
Molarity = moles of solute/volume of solution in liters
So,
0.100 = moles of solute/0.1000
Moles of solute = 0.100 * 0.1000
= 0.01 moles
Now The mass should be
Moles = mass/molar mass
0.01 = mass / 147.01
Mass = 147.01 * 0.01
= 1.4701 grams.
hence, The mass should be considered as the 1.4701 grams and the moles should be 0.01.
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How many liters of O2(g) at STP are evolved when 3.25 g of KNO3 decompose to KNO2 (s) and O2(g)?
2 KNO 3 (s) <=> 2KNO2 (s) + 02 (g)
Answers
Answer:
0.359 L or 359 mL of O2 gas will be produced from the given reaction at STP
Explanation:
The balanced chemical equation for the decomposition of KNO3 is:
2 KNO3 (s) → 2 KNO2 (s) + O2 (g)
From this equation, we can see that 2 moles of KNO3 produce 1 mole of O2. Therefore, we need to calculate the number of moles of KNO3 we have and use the mole ratio to find the number of moles of O2 produced.
First, we need to convert the mass of KNO3 given to moles:
moles of KNO3 = mass of KNO3 / molar mass of KNO3
The molar mass of KNO3 is 101.1 g/mol (39.1 g/mol for K, 14.0 g/mol for N, and 3 x 16.0 g/mol for 3 O atoms), so we have:
moles of KNO3 = 3.25 g / 101.1 g/mol = 0.0321 mol
Now we can use the mole ratio from the balanced equation to find the number of moles of O2 produced:
moles of O2 = 0.5 x moles of KNO3
moles of O2 = 0.5 x 0.0321 mol = 0.01605 mol
Finally, we can convert the number of moles of O2 to volume at STP using the ideal gas law:
V(O2) = n x RT/P = (0.01605 mol)(0.0821 L·atm/(mol·K) x 273.15 K)/(1 atm) = 0.359 L
Therefore, 0.359 L or 359 mL of O2 gas will be produced from the given reaction at STP.
A chemist uses 22.0 mL of 0.10 M H₂SO4 to neutralize 10.0 mL of NaOH. What is the concentration of the NaOH solution?
2 A 044M
OB. 0.22 M
O C 0.11 M
OD. 0.055 M
Answers
The concentration of the NaOH solution required for the reaction given the data is 0.44 M
Balanced equationH₂SO₄ + 2NaOH —> Na₂SO₄ + 2H₂O
From the balanced equation above,
The mole ratio of the acid, H₂SO₄ (nA) = 1The mole ratio of the base, NaOH (nB) = 2How to determine the concentration of NaOHVolume of acid, H₂SO₄ (Va) = 22 mL Concentration of acid, H₂SO₄ (Ca) = 0.1 MVolume of base, NaOH (Vb) = 10 mLConcentration of base, NaOH (Cb) =?CaVa / CbVb = nA / nB
(0.1 × 22) / (Cb × 10) = 1 / 2
2.2 / (Cb × 10) = 1 / 2
Cross multiply
Cb × 10 = 2.2 × 2
Cb × 10 = 4.4
Divide both side by 10
Cb = 4.4 / 10
Cb = 0.44 M
Thus, the concentration of the NaOH solution is 0.44 M
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Q)Indicate True and False statements:
a. The melting points of saturated fatty acids increase with increasing chain length
b. Double bonds in saturated fatty acids are separated by -CH2-CH2-groups
c. △9, 12-all cis, 18:3 is linoleic acid
d. A by-product of the hydrolysis of fats is glycerol
Answers
Statement a is true, as the melting points of saturated fatty acids do increase with increasing chain length. Statement b is false, as saturated fatty acids do not contain double bonds. Statement c is false, as △9, 12-all cis, 18:3 represents alpha-linolenic acid, not linoleic acid. Statement d is true, as glycerol is indeed a by-product of the hydrolysis of fats.
a. True. The melting points of saturated fatty acids increase with increasing chain length. This is because longer fatty acid chains have stronger intermolecular forces, such as van der Waals forces, which require more energy to break and result in higher melting points.
b. False. Saturated fatty acids do not have double bonds. They are composed of only single carbon-carbon bonds. Double bonds are found in unsaturated fatty acids.
c. False. △9, 12-all cis, 18:3 is not linoleic acid. It represents the structure of alpha-linolenic acid. Linoleic acid is △9, 12-18:2, which means it has two double bonds located at the 9th and 12th carbon positions.
d. True. A by-product of the hydrolysis of fats is glycerol. When fats undergo hydrolysis, they are broken down into their constituent fatty acids and glycerol. Glycerol is a three-carbon molecule that is a component of triglycerides (fats).
During hydrolysis, the ester bonds between the fatty acids and glycerol are cleaved, resulting in the release of fatty acids and glycerol.
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Lewis structure of Hydroxide ion and it's formal charge
Answers
Answer:
Hopefully this was helpful!
In this structure, Oxygen (O) is the central atom, and it is bonded to one Hydrogen (H) atom. Oxygen also has two lone pairs of electrons.
To calculate the formal charge, we need to determine the valence electrons of each atom and compare them to the number of electrons assigned to the atom in the Lewis structure.
For Oxygen (O):
Valence electrons = 6
Number of lone pairs = 2
Number of bonding electrons = 2 (from the bond with Hydrogen)
Formal charge = Valence electrons - Lone pairs - Number of bonding electrons
= 6 - 2 - 2
= 2 - 2
= 0
For Hydrogen (H):
Valence electrons = 1
Number of bonding electrons = 2 (from the bond with Oxygen)
Formal charge = Valence electrons - Number of bonding electrons
= 1 - 2
= -1
Therefore, the formal charge of Oxygen in the hydroxide ion (OH-) is 0, and the formal charge of Hydrogen is -1.
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You have to prepare a pH 5.00 buffer, and you have the following 0.10 M solutions available: HCOOH (pka=3.74), HCOONa, CH3COOH (pka=4.74), CH3COONa, HCN (pka=9.31), and NaCN. Which solutions would you use?
Answers
Answer:
CH3COOH - CH3COONa since its pKa is closest to the required pH.
Explanation:
Hello there!
In this case, in agreement with the theory of buffers as solutions able to withstand severe pH changes due to the addition of acidic or basic substances, it is possible to set up a generation equilibrium expression for the acids herein given:
\(Ka=\frac{[A^-][H_3O^+]}{[HA]}\)
Which leads to the Henderson-Hasselbach equation:
\(pH=pKa+log(\frac{[A^-]}{[HA]} )\)
Thus, since all the buffers have [A-]=[HA]=0.10M, the log part becomes 0 and therefore the best buffer will have the closest pKa to the required pH, which is CH3COOH - CH3COONa since its pKa is 4.74.
Best regards!
\(CH_3COOH\; and\; CH_3COONa\) can be used to prepare a pH buffer, if 0.10 M solution available of the solutions.
What is buffer?Buffer is a solution, that resist change in pH, by adding or removing H+ ions to the solution.
Maintaining a constant pH is necessary to complete many reactions.
In blood, bicarbonates maintain the pH of the body.
\(CH_3COOH\; and\; CH_3COONa\) have approx the nearest pH, so they can be used to make a buffer.
Thus, the correct options are \(CH_3COOH\; and\; CH_3COONa\)
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Metal: Specific Heat (J/goC)
Calcium: 0.647
Iron: 0.449
Silver: 0.235
Gold: 0.129
After absorbing 0.500 kJ of energy, a 55.5 g sample of an unknown substance has a temperature increase of about 14 degrees Celsius. Identify the substance.
Group of answer choices:
A.) Gold
B.) Iron
C.) Silver
D.) The substance is not listed.
E.) Calcium
Answers
Identified substance which is present in the sample of 55.5g is calcium, because the calculated and actual specific heat is almost same.
What is the relation between specific heat and absorbed heat?Relation between the amount of absorbed heat and specific heat of any substance is shown by following equation:
Q = mcΔT, where
Q = absorbed heat = 0.500kJ = 500Jm = mass of unknown substance = 55.5 gc = specific heatΔT = change in temperature = 14 degrees CelsiusOn putting all these values on the above equation, we get
c = 500 / (55.5)(14) = 0.643 J/g. degrees Celsius
And this value is almost equal to the given specific heat value of calcium, so the given substance is calcium.
Hence the given unknown substance is calcium.
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1.0 mole of a gas is enclosed in a 12.3 liter cylinder with a moveable piston at 300 K and 2.0 atm. Half of the gas is removed, leaving 0.50 mole in the cylinder and the system is warmed to 900 K. The cylinder changes volume to maintain constant pressure. What is the volume in the final system?1.0 mole of a gas is enclosed in a 12.3 liter cylinder with a moveable piston at 300 K and 2.0 atm. Half of the gas is removed, leaving 0.50 mole in the cylinder and the system is warmed to 900 K. The cylinder changes volume to maintain constant pressure. What is the volume in the final system?
Answers
The final volume of the system, given that half of the gas is removed, leaving 0.50 mole in the cylinder and the system is warmed to 900 K is 18.45 liters
How do I determine the final volume of the system?From ideal gas equation, we have
PV = nRT
Rearrange
V / nT = R/ P
R / P = Constant
Thus, we have
V₁ / n₁T₁ = V₂ / n₂T₂
Where
V₁ and V₂ are initial and final volumen₁ and ₂ are initial and final moleT₁ and T₂ are initial and final temperatureWith the above formula, we can obtain the final volume of the system as follow:
Initial mole (n₁) = 1 moleInitial volume of gas (V₁) = 12.3 litersInitial temperature (T₁) = 300 KPressure = ConstantFinal mole (n₂) = 0.5 moleFinal temperature (T₂) = 900 KFinal volume (V₂) = ?V₁ / n₁T₁ = V₂ / n₂T₂
12.3 / (1 × 300) = V₂ / (0.5 × 900)
Cross multiply
1 × 300 × V₂ = 12.3 × 0.5 × 900
300 × V₂ = 5535
Divide both side by 300
V₂ = 5535 / 300
V₂ = 18.45 liters
Thus, the final volume of the system is 18.45 liters
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plse help dont understand
Answers
The origin for the word Cent is French and another example is centimeter.
The origin for Bi is Latin and another example is bilingual.
The origin for the word Ism is greek and another example is racism.
The origin for the word graph is greek and another word is biography.
The origin for the word form is latin and another example is formula.
the origin for the word cycl is greek and another example is bicycle.
Ibuprofen can be found in 800 mg doses in over-the-counter analgesics, such as Advil and Motrin. How many grams of iburofen
does such a tablet contain?
800 mg =
g
Answers
The grams of iburofen does such a tablet contain 800 mg = 0.8g Ibuprofen
1 g = 10^-3g = .001g
Ibuprofen has 800 mg doses in over-the-counter analgesic
800g = 800 × .001
= 0.8g
Ibuprofen is Nondteriodal Anti-inflammatory Drug (NSAID)Ibuprofen's Mechanism of Action is Decreases inflammation, pain, and fever through inhibition of cyclooxygenase activity and prostaglandin synthesisnonsteroidal anti-inflammatory medication (NSAID) used for pain relief and to reduce fever by stops inflammation and by blocking formation of cyclo-oxygenase (COX-2) a chemical mediator of inflammatory chemicals. i.e prostaglandinsIt comes under the Class analgesic (reduce pain) and antipyretic (FIRE - reduce fever)e side effects of ibuprofen NSAID are peripheral edema, fluid retention with edema, tinnitus, purpura, petechiae, anorexia, diarrhea, rash, nausea, vomiting, fatigue, dizziness, lightheadedness, anxiety, confusionTo know more about analgesic visit :
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The diagram shows the setup of an experiment. A few observations of the experiment are listed in the table below the diagram.
A beaker filled three-fourths with a liquid labeled colorless silver nitrate solution is shown. A small strip is shown inside the beaker. The strip is labeled copper strip. The title of the image is Experimental Setup.
Experimental Observations
Observation Description
1 Solution turned blue
2 Gray particles were deposited on the edge of the strip
Which of the following is the correct explanation for one of the given observations?
Observation 2 is a result of nitrate ions moving into the solution.
Observation 1 is a result of copper ions moving into the solution.
Observation 1 is a result of silver atoms losing one electron.
Observation 2 is a result of silver ions losing one electron.
Answers
Copper is higher than silver in the electrochemical series hence copper displaces silver in the electrochemical series.
The solubility of a metal in another is determined by their relative positions in the electrochemical series. The metals that are higher above in the electrochemical series displaces the metals that are lower in the electrochemical series.
Copper is higher than silver in the electrochemical series hence copper displaces silver in the electrochemical series. Therefore, the correct explanation for an observation is that;
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Answer:
Observation 1 is a result of copper ions moving into the solution.
Explanation:
got it right on the test
Instead of using a pH meter, suggest an appropriate indicator other than phenolphthalein that could be used to find the equivalence point of this reaction.
Answers
An indicator that we can use to find the equivalence of a reaction is methyl orange which is a colorant and acts changing from red to yellow-orange color and its range of pH is 3.1 and 4.4, which shows its color in an acidic (weak) medium.
If Jonathan went skateboarding from 4:00 PM to 4:30 PM and traveled 450 meters, what was his average speed?
Answers
Why does lowering the pressure cause a liquid to boil?
OA. It causes the temperature to rise.
OB. It changes the volume of the liquid.
C. It becomes easier for molecules to escape.
D. It pushes molecules out of the liquid.
Answers
C. It becomes easier for molecules to escape.
Decreasing pressure causes a liquid to boil because it makes it simpler for molecules to escape.
Vapor pressureWhen a liquid's vapor pressure is higher than the air pressure in the area, boiling takes place. The atmospheric pressure drops when the pressure does, which means that the vapor pressure necessary for boiling likewise drops. This enables more liquid molecules to transition into the gas phase, which finally causes the liquid to boil.Option A: Reducing the pressure does not increase the temperature or alter the liquid's volume (option B). Also, it doesn't force molecules out of the liquid (option D).
Instead, it lessens the pressure placed on the liquid's surface, which enables the liquid's molecules to more readily overcome their attraction to one another and transition into the gas phase.
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1. The symbol of an element represents one atom of that element.
e.g. Ca
= 1 calcium atom
Answers
Diatomic elements include:
-H
-O
-N
-Cl
-Br
-I
-F
Define voltaic ???!!!
Answers
A voltaic cell is used to produce electrical energy with the help of chemical reactions.
What is a voltaic cell?Relating to, or producing direct electric current by chemical action.
A Voltaic Cell (also known as a Galvanic Cell) is an electrochemical cell that uses spontaneous redox reactions to generate electricity. It consists of two separate half-cells.
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1. A drug used to treat pain has a dosage of 125.0 mg drug/lb of body mass. Calculate the
gram dosage for a 62.7 kg person.
Answers
1kg = 2.20462 Ib
The weight of the person is We convert the weight from kg to Ib1kg = 2.20462 Ib
62.7kg = ?
Cross multiply
= 62.7kg x 2.20462 Ib / 1 kg
= 138.2298 Ib
Approximately the weight of the person = 138.23 Ib
A drug used to treat pain has a dosage of 125.0 mg drug/lb of body mass.This means: 1 Ib of body weight = 125.0 mg drug
The drug dosage for a 62.7 kg person is calculated as:
1 Ib of body weight = 125.0 mg drug
138.23 Ib = ?
Cross Multiply
= 138.23 Ib x 125 mg / 1 ib
= 17278.75 mg
The gram dosage for a 62.7kg person is
1 mg = 0.001 g
17278.75 mg = ?
= 17278.75 x 0.001 g
= 17.27875g
Approximately = 17.3 g.
The gram dosage for a 62.7kg person is 17.3 grams
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A single bond contains ____ shared electrons.
Answers
A single bond contains two shared electrons.
Perform the calculation and record the answer with the correct number of significant figures. Perform the calculation and record the answer with the correct number of significant figures.
(6.5−6.35)/3.49=
Answers
The value of the following expression is 0.0429 rounded off to 0.043. The correct number of significant figures is 2.
The given expression (6.5 - 6.35) / 3.49 is calculated as below
(6.5 - 6.35) / 3.49
0.15 / 3.49
0.04297
0.043
Zeros to the left of the first non-zero digit are considered as not significant. For example 0.00765 has only 3 significant numbers.
When multiplying and dividing measured quantities, the output of the calculation should have the same number of significant figures as the measured quantity with the fewest significant figures. When performing multiple stage calculations, do not round intermediate stage calculation results; keep as many digits as is practical and round off only in the final output
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