Which of the following is the EMPIRICAL formula of dodecane? w) C5H11 x) C6H13 y) C10H22 z) C12H26

Which of the following is the EMPIRICAL formula of dodecane? w) C5H11 x) C6H13 y) C10H22 z) C12H26
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ANSWER: X -- C6H13
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An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the distance between adjacent carbon atoms is 1.39Å (intermediate between single and double bond lengths). The evidence suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Last Answer : Benzene

An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the distance between adjacent carbon atoms is 1.39Å (intermediate between single and double bond lengths). The evidence suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Last Answer : Benzene

For calculating the allowable stress of long columns. The empirical formula 0 y/n) (1 - a l/r), is known as (A) Straight line formula (B) Parabolic formula (C) Perry's formula (D) Rankine's formula

Description : For calculating the allowable stress of long columns. The empirical formula 0 y/n) (1 - a l/r), is  known as  (A) Straight line formula  (B) Parabolic formula  (C) Perry's formula  (D) Rankine's formula 

Last Answer : (A) Straight line formula 

For calculating the permissible stress 0 y /[(1 + a(l/r)²]is the empirical formula, known as (A) Straight line formula (B) Parabolic formula (C) Perry's formula (D) Rankine's formula

Description : For calculating the permissible stress 0 y /[(1 + a(l/r)²]is the empirical formula, known as  (A) Straight line formula  (B) Parabolic formula  (C) Perry's formula  (D) Rankine's formula 

Last Answer : (D) Rankine's formula 

For calculating the allowable stress of long columns 0 y/n [1 - a (1/r)²]is the empirical formula, known as (A) Straight line formula (B) Parabolic formula (C) Perry's formula (D) Rankine's formula

Description : For calculating the allowable stress of long columns 0 y/n [1 - a (1/r)²]is the empirical formula,  known as  (A) Straight line formula  (B) Parabolic formula  (C) Perry's formula  (D) Rankine's formula 

Last Answer : (B) Parabolic formula 

In Celsius, the freezing point of a one-molal water solution of sodium phosphate, chemical formula Na3PO4, is expected to be: w) - 0.93 degrees Celsius x) - 1.86 degrees Celsius y) - 7.44 degrees Celsius z) - 3.72 degrees Celsius

Description : In Celsius, the freezing point of a one-molal water solution of sodium phosphate, chemical formula Na3PO4, is expected to be: w) - 0.93 degrees Celsius x) - 1.86 degrees Celsius y) - 7.44 degrees Celsius z) - 3.72 degrees Celsius

Last Answer : ANSWER: C -- (- 7.44 DEGREES CELSIUS)

The substance whose chemical formula is CH3OH is known as w) carbonated water x) grain alcohol y) potable alcohol z) methanol

Description : The substance whose chemical formula is CH3OH is known as w) carbonated water x) grain alcohol y) potable alcohol z) methanol

Last Answer : ANSWER: Z -- METHANOL

Which of the following elements would form an acid oxide with the formula XO2 and an acidic compound with hydrogen with the formula XH2? w) Sodium x) Magnesium y) Aluminum z) Sulfur

Description : Which of the following elements would form an acid oxide with the formula XO2 and an acidic compound with hydrogen with the formula XH2? w) Sodium x) Magnesium y) Aluminum z) Sulfur

Last Answer : ANSWER: Z -- SULFUR

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Description : If two compounds have the same empirical formula but different molecular formula, they must have [MP PMT 1986] (A) Different percentage composition (B) Different molecular weights (C) Same viscosity (D) Same vapour density

Last Answer : (B) Different molecular weights

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Description : Give the EMPIRICAL formula for the organic compound cyclopentene.

Last Answer : ANSWER: C5H8 

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Description : What is the empirical formula for fructose?  

Last Answer : ANSWER: CH2O

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Description : What is the EMPIRICAL FORMULA for Benzene? 

Last Answer : ANSWER: CH

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Description : What is the EMPIRICAL formula for glucose? 

Last Answer : ANSWER: CH2O (read: C - H - 2 - O) 

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Description : Give the empirical formula for the organic compound naphthalene?

Last Answer : ANSWER: C10H8

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Description : What is the chemical formula for quartz? w) CaCO-3 x) SiO-2 y) Fe-2O-3 z) none of these

Last Answer : ANSWER: X -- SiO-2

Which of the following is the chemical formula for calcite? w) CaCO3 x) CaMgSO4 y) FeCO3 z) FeS2

Description : Which of the following is the chemical formula for calcite? w) CaCO3 x) CaMgSO4 y) FeCO3 z) FeS2

Last Answer : ANSWER: W -- CaCO3

Determine the empirical formula of an oxide of iron that has 69.9% iron & 30.1% dioxygen by mass. -General Knowledge

Description : Determine the empirical formula of an oxide of iron that has 69.9% iron & 30.1% dioxygen by mass. -General Knowledge

Last Answer : Given: % of iron by mass = 69.9 % % of oxygen by mass = 30.1 % Relative moles of iron in iron oxide: = Percentage of iron by mass/Atomic mass of iron = 69.9/55.85 = 1.25 Relative moles of oxygen in iron ... to oxygen: = 1.25: 1.88 = 1:1.5 = 2:3 ∴ The empirical formula of the iron oxide is Fe2O3.

The empirical formula of an acid is `CH_(2)O_(2)`, the probable molecular formula of acid may be :-

Description : The empirical formula of an acid is `CH_(2)O_(2)`, the probable molecular formula of acid may be :-

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Description : What is the empirical formula for hydrogen peroxide?

Last Answer : HO

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Description : What is the empirical formula for a molecule containing 46.8 Si and 53 O?

Last Answer : Since the ratio of atomic masses of silicon and oxygen is1:1.988, the empirical formula is SiO2.

What is the empirical formula for hydrogen peroxide?

Description : What is the empirical formula for hydrogen peroxide?

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What is the empirical formula for a molecule containing 46.8 Si and 53 O?

Description : What is the empirical formula for a molecule containing 46.8 Si and 53 O?

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Description : What is the molecular formula of a compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole?

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Description : Is definitely not an empirical formula C12H16O3 C6H12O4 C12H22O11 C3H8O2?

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Description : so3 is an empirical formula for which of the following A. so4B.s2o6C.s4o2D.s2o3?

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Which best describes an empirical formula?

Description : Which best describes an empirical formula?

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Description : What is the total number of ions in the empirical formula NaOH?

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Empirical formula?

Description : Empirical formula?

Last Answer : A 0.1845g sample of molybdenum metal is covered with hydrochloric acid and heated until the reaction is complete and excess chlorine is driven off. When weighed, the final product of the metal and chlorine had a mass of 0.5936g. What is the empirical formula if the compound?

The empirical formula for chlorophyll-a is: (a) C35 H72 O5N4 Mg (b) C65 H70 O6N4 Mg (c) C55 H72 O5N4 Mg (d) C45 H70 O6N4 Mg

Description : The empirical formula for chlorophyll-a is: (a) C35 H72 O5N4 Mg (b) C65 H70 O6N4 Mg (c) C55 H72 O5N4 Mg (d) C45 H70 O6N4 Mg

Last Answer : Ans. ((c))

If P is population of a city in thousands and Q is fire demand in litres per minute, for proper estimate of water, the Empirical formula Q = 1135 [(P/5) + 10] is suggested by (A) National Board of fire under-writers (B) Freeman (C) Kuichling (D) None of these

Description : If P is population of a city in thousands and Q is fire demand in litres per minute, for proper  estimate of water, the Empirical formula Q = 1135 [(P/5) + 10] is suggested by  (A) National Board of fire under-writers  (B) Freeman  (C) Kuichling  (D) None of these 

Last Answer : (B) Freeman 

The fire demand for ascertaining the empirical formula 1136.5 [(P/10) + 10] known as (A) Kuichling's formula (B) Buston's formula (C) Freeman formula (D) Under Writers formula

Description : The fire demand for ascertaining the empirical formula 1136.5 [(P/10) + 10] known as  (A) Kuichling's formula  (B) Buston's formula  (C) Freeman formula  (D) Under Writers formula 

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For calculation of economical diameter D of a pipe in metres for a discharge Q to be pumped in cumecs, Lea suggested the empirical formula (A) D = 0.22 Q (B) D = 1.22 Q (C) D = 2.22 Q (D) D = 3.22 Q

Description : For calculation of economical diameter D of a pipe in metres for a discharge Q to be pumped in  cumecs, Lea suggested the empirical formula  (A) D = 0.22 Q (B) D = 1.22 Q (C) D = 2.22 Q (D) D = 3.22 Q

Last Answer : (B) D = 1.22 Q

Design of flexible pavements is based on (A) Mathematical analysis (B) Empirical formulae (C) A compromise of pure theory and pure empirical formula (D) None of these

Description : Design of flexible pavements is based on (A) Mathematical analysis (B) Empirical formulae (C) A compromise of pure theory and pure empirical formula (D) None of these

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As per Stevenson's empirical formula, the approximate value of the height of the wave in metres is given by (A) 0.34 VF (B) 0.5 VF (C) 1.5 VF (D) 3.4 VF

Description : As per Stevenson's empirical formula, the approximate value of the height of the wave in metres is given by (A) 0.34 VF (B) 0.5 VF (C) 1.5 VF (D) 3.4 VF

Last Answer : (A) 0.34 VF

What Is The Empirical Formula Used To Give The Number Of Bolts In Flange Coupling?

Description : What Is The Empirical Formula Used To Give The Number Of Bolts In Flange Coupling?

Last Answer : n = 0.2d + 3

Which of the following best completes the statement: The calorie is the amount of heat needed to raise: w) 1 gram of water 1 degree Celsius x) 1 gram of water 1 degree Rankin y) 1 kilogram of water 1 degree Celsius z) 1 kilogram of water 1 degree Kelvin

Description : Which of the following best completes the statement: The calorie is the amount of heat needed to raise: w) 1 gram of water 1 degree Celsius x) 1 gram of water 1 degree Rankin y) 1 kilogram of water 1 degree Celsius z) 1 kilogram of water 1 degree Kelvin

Last Answer : ANSWER: W -- 1 GRAM OF WATER 1 DEGREE CELSIUS

Which of the following substances is a molecular solid? w) Glass x) Ice y) Silver z) Table Salt

Description : Which of the following substances is a molecular solid? w) Glass x) Ice y) Silver z) Table Salt

Last Answer : ANSWER: X -- ICE

The difference in the osmotic pressures of one molar solutions of different compounds in a given solvent at a given temperature results from? w) Different values for R x) Different values for Avogadro's number y) Ionization or dissociation z) None of the above

Description : The difference in the osmotic pressures of one molar solutions of different compounds in a given solvent at a given temperature results from? w) Different values for R x) Different values for Avogadro's number y) Ionization or dissociation z) None of the above

Last Answer : ANSWER: Y -- IONIZATION OR DISSOCIATION 

Mayonnaise is: w) an emulsion x) a hydrogenated oil y) a covalent solution z) a coalescent solution

Description : Mayonnaise is: w) an emulsion x) a hydrogenated oil y) a covalent solution z) a coalescent solution

Last Answer : ANSWER: W -- AN EMULSION

How many carbon atoms are there in one naphthalene molecule? w) 6 x) 8 y) 10 z) 15

Description : How many carbon atoms are there in one naphthalene molecule? w) 6 x) 8 y) 10 z) 15

Last Answer : ANSWER: Y -- 10

Which of the following gases is more soluble in water as the water temperature increases? w) Helium x) Air y) Carbon dioxide z) Hydrogen

Description : Which of the following gases is more soluble in water as the water temperature increases? w) Helium x) Air y) Carbon dioxide z) Hydrogen

Last Answer : ANSWER: W -- HELIUM

The compound which would have the greatest molar effect on the colligative properties of a dilute solution would be: w) CaCl2 x) NaCl y) C6H12O6 z) Benzene

Description : The compound which would have the greatest molar effect on the colligative properties of a dilute solution would be: w) CaCl2 x) NaCl y) C6H12O6 z) Benzene

Last Answer : ANSWER: W -- CaCl2

Based on the intermolecular forces involved, which of the following molecules will have the lowest boiling point? w) ethane x) methyl alcohol y) methyl amine z) methyl fluoride

Description : Based on the intermolecular forces involved, which of the following molecules will have the lowest boiling point? w) ethane x) methyl alcohol y) methyl amine z) methyl fluoride

Last Answer : ANSWER: W -- ethane

Calcium carbonate is most soluble in: w) 0.2 Molar Sodium carbonate x) 0.1 Molar Calcium chloride y) 0.1 Molar Sodium hydroxide z) 0.1 Molar Hydrochloric acid

Description : Calcium carbonate is most soluble in: w) 0.2 Molar Sodium carbonate x) 0.1 Molar Calcium chloride y) 0.1 Molar Sodium hydroxide z) 0.1 Molar Hydrochloric acid

Last Answer : ANSWER: Z -- 0.1 MOLAR HYDROCHLORIC ACID

What is the purpose of the salt bridge in an electrochemical cell? w) It allows ion migration. x) It allows electron flow. y) It prevents ion migration. z) It prevents electron flow.

Description : What is the purpose of the salt bridge in an electrochemical cell? w) It allows ion migration. x) It allows electron flow. y) It prevents ion migration. z) It prevents electron flow.

Last Answer : ANSWER: W -- IT ALLOWS ION MIGRATION

During osmosis w) Pure solvent diffuses through a membrane but solutes do not. x) Pure solutes diffuse through a membrane but solvent does not. y) Pure solvent and a solution both diffuse at the same time through a membrane. z) Gases diffuse through a membrane into a solution and build up pressure.

Description : During osmosis w) Pure solvent diffuses through a membrane but solutes do not. x) Pure solutes diffuse through a membrane but solvent does not. y) Pure solvent and a solution both diffuse at the same time through a membrane. z) Gases diffuse through a membrane into a solution and build up pressure. 

Last Answer : ANSWER: W -- PURE SOLVENT DIFFUSES THROUGH A MEMBRANE BUT SOLUTES DO NOT. 

Consider the following gaseous equilibrium: PCl3 + Cl2 = PCl5 + heat. Which of the following changes will shift it to the right: w) lower the temperature x) remove some Cl2 y) increase the volume z) add a catalyst

Description : Consider the following gaseous equilibrium: PCl3 + Cl2 = PCl5 + heat. Which of the following changes will shift it to the right: w) lower the temperature x) remove some Cl2 y) increase the volume z) add a catalyst

Last Answer : ANSWER: W -- LOWER THE TEMPERATURE