Description : Which of the following concentration expressions is defined as the number of moles of solute per kilogram of solvent: w) molarity x) molality y) normality z) equivalents
Last Answer : ANSWER: X -- MOLALITY
Description : Moles of solute divided by kilograms of solvent is expression for: w) molarity x) solute-to-solution ratio y) mole percentage z) molality
Last Answer : ANSWER: Z -- MOLALITY
Description : The number of moles of solute present in 1 kg of a solvent is called its (a) Molality (b) Molarity (c) Normality (d) Formality
Last Answer : Ans:(a)
Description : How many grams per liter would there be in a 0.35 N (Normality) Citric acid solution?
Last Answer : The normality of a solution is the number of gram-equivalent weights of the dissolved substance per liter of solution. The gram-equivalent weight of the dissolved substance is the molecular weight of the dissolved ... would have (0.35)(64.4) = 22.41 grams of citric acid per liter of solution.
Description : Molarity is defined as the number of gm moles of solute per __________ of solvent. (A) Litre (B) kg (C) gm (D) c.c
Last Answer : (A) Litre
Description : Molality is defined as the number of gm moles of solute per __________ of solvent. (A) Litre (B) gm (C) Kg (D) m
Last Answer : (C) Kg
Description : Number of grams of solute per liter of solution is called a. Normal solution b. Molar solution c. Molal solution d. simple solution
Last Answer : Molar solution
Description : 2.5 liters of a sodium chloride (NaCl) solution contain 5 moles of the solute. What is the molarity? w) 5 molar x) 2 molar y) 2.5 molar z) 12.5 molar
Last Answer : ANSWER: X -- 2 MOLAR
Description : An aqueous solution is always a solution in which the: w) solute is water x) solute is a salt y) solvent is a salt z) solvent is water
Last Answer : ANSWER: Z -- SOLVENT IS WATER
Description : The density of lead is 12 grams per cm3. A lead brick has a mass of 1.5 kilograms. Its dimensions are 10 cm by 5 cm by 4 cm. Is it: w) More than 75% hollow x) Between 50 and 75% hollow y) Between 25 and 50% hollow z) Between 0 and 25% hollow
Last Answer : ANSWER: Y -- BETWEEN 25 AND 50% HOLLOW
Description : Number of gram of solute per 1000 gm of solvent is called a. Normal solution b. Molar solution c. molal solution d. simple solution
Last Answer : molal solution
Description : When a solute is dissolved in a pure solvent, the resulting freezing point is: w) higher than pure solvent x) lower than pure solvent y) does not change z) cannot tell from this information
Last Answer : ANSWER: X -- LOWER THAN PURE SOLVENT
Description : Which of the following terms has as its definition: a mixture having continuous and dispersed phases? w) colloid x) solute y) suspension z) solvent
Last Answer : ANSWER: W -- COLLOID
Description : A block of metal which weighs 60 newtons in air and 40 newtons under water has a density, in kilograms per meter cubed, of: w) 1000 x) 3000 y) 5000 z) 7000
Last Answer : ANSWER: X -- 3000
Description : A molar solution is one that contains one mole of a solute in [IIT 1986] (A) 1000 g of the solvent (B) One litre of the solvent (C) One litre of the solution (D) 22.4 litres of the solution
Last Answer : (C) One litre of the solution
Description : How many moles of carbon are in 48 grams of carbon w) 4 x) 3 y) 2 z) 1
Last Answer : ANSWER: W -- 4
Description : Number of gram equivalents of solute per liter of solution is called C A. Simple solution B. Molar solution C. Normal solution D. Molal solution
Last Answer : Normal solution
Description : Number of gram equivalents of solute per liter of solution is called a. Normal solution b. Molar solution c. molal solution d. simple solution
Description : The number of moles of solute present in 1 kg of a solvent is called its?
Last Answer : molality
Description : One equivalent of a triprotic acid is the same as: w) one mole of the acid x) one-third mole of the acid y) three moles of the acid z) three equivalents of a diprotic acid
Last Answer : ANSWER: X -- ONE-THIRD MOLE OF THE ACID
Description : A negative heat of solution indicates that: w) an endothermic dissolving process occurs x) solute solubility increases with rising solution temperature y) solute solubility decreases with rising solution temperature z) super-saturation conditions exist
Last Answer : ANSWER: Y -- SOLUTE SOLUBILITY DECREASES WITH RISING SOLUTION TEMPERATURE
Description : The rate at which dissolution occurs is LEAST dependent upon which one of the following factors: w) temperature x) pressure y) solution concentration z) solute surface area
Last Answer : ANSWER: X -- PRESSURE
Description : The individual mass transfer co-efficients (moles/m2s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of ... A) Liquid side (B) Gas side (C) Interfacial (D) Both liquid and gas side
Last Answer : (B) Gas side
Description : In a liquid-liquid extraction, 10 kg of a solution containing 2 kg of solute C and 8 kg of solvent A is brought into contact with 10 kg of solvent B. Solvent A and B are completely immiscible in each other whereas ... (C) Less than 1 kg of C is transferred to B (D) No amount of C is transferred to B
Last Answer : (A) The entire amount of C is transferred to solvent B
Description : What is the molarity of a salt solution prepared b dissolving three moles of salt in 500 milliliters of water? w) 1 x) 2 y) 4 z) 6
Last Answer : ANSWER: Z -- 6
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.
Description : Which of the following properties is lower for a solution than for the pure solvent? w) osmotic pressure x) vapor pressure y) temperature z) boiling point
Last Answer : ANSWER: X -- VAPOR PRESSURE
Description : Which of the following properties is greater for a solution than for the pure solvent? w) freezing point x) vapor pressure y) temperature z) boiling point
Last Answer : ANSWER: D -- BOILING POINT
Description : HCl is dissolved in solvent A; the solution is non-conducting towards an electric current. Solvent A must be: w) polar x) non-polar y) organic z) more acidic than HCl
Last Answer : ANSWER: X -- NON-POLAR
Description : An object with a mass of 5 kilograms is a distance of 5 meters above the surface of the earth. If the acceleration due to gravity is 10 meters per second squared, the potential energy of the object relative to the ... is: w) 10 joules x) 20 joules y) 100 joules z) 250 joules e) none of the above
Last Answer : ANSWER: Z -- 250 JOULES
Description : A train locomotive whose mass is 1 x 106 kilograms is traveling EAST at a speed of 100 kilometers per hour. A NORTHERLY wind is applying a force of 100 Newtons on the locomotive. How much work is the wind doing ... 10 meters it travels? w) 0 joules x) 1,000 joules y) 10,000 joules z) 100,000 joules
Last Answer : ANSWER: W -- 0 JOULES
Description : Units commonly used for entropy are: w) kilograms per degree Kelvin x) Joules per degree Kelvin y) Newtons per Coulomb z) ergs
Last Answer : ANSWER: X -- JOULES PER DEGREE KELVIN
Description : A car is moving along a straight horizontal road at a speed of 20 meters per second. The brakes are applied and a constant force of 5000 Newtons decelerates the car to a stop in 10 seconds. The mass of the car is: w) 1250 kilograms x) 2500 kilograms y) 5000 kilograms z) 10,000 kilograms
Last Answer : ANSWER: X -- 2500 KILOGRAMS
Description : Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m2 and the ... extraction achieved in the unit is (A) 25% (B) 50% (C) 70% (D) 90%
Last Answer : (B) 50%
Description : The molecular weight of H2SO4 is 98. How many grams of H2SO4 are contained in 1 liter of a 1 Normal solution?
Last Answer : ANSWER: 49 grams of H2SO4
Description : 13.a) What is solute and solvent in aerated drinks? b) Given a solution of substance 'A' how will you test whether it is saturated or unsaturated with respect to 'A' at the given temperature. -Chemistry
Last Answer : (a) No solute and solvent is available in aerated drinks. (b) in the given solution add small amount of solute A, if A dissolved a daydream a transparent solution is formed then it is an unsaturated solution and if A doesn't dissolved and a precipitate is formed then it's a saturated solution
Description : (1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a ... the solvent including its phase, and the solvent is commonly the major fraction of the mixture.
Last Answer : Choose the incorrect statement pertaining to organic compounds - (1) They have low melting and boiling points (2) They do not dissolve in water (3) They are not easily combustible (4) They contain mainly carbon and hydrogen
Description : Define the following : Solute , Solvent , Solution , Aqueous Solution & Solubility.
Last Answer : Ans : Solute : The component of the solution present in smaller amount is called solute. It is also defined as the substance that gets dissolved in the solvent. Example : Glucose is solute in glucose solution. ... grams / 100 grams. Solubility of sugar in water at 100 degree C is 487 grams/100 ml.
Description : PH is the negative logarithm of the hydrogen Ion Concentration express4ed in moles/liter of aqueous solution. PH of buffer solution is calculated by. Henderson's equation Name the best ... Chemical kinetics deals with study of. Rates and mechanisms of chemical and Biochemical reactions
Last Answer : What does Thermodynamics helps in predicting ?
Description : pH is defined as the negative logarithm of the hydrogen ion concentration. Comparing a pH 5 and a pH 8 solution, which of the following is true? w) There are 1,000 times more hydrogen ions in ... . z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.
Last Answer : ANSWER: X -- THERE ARE 1,000 TIMES MORE HYDROGEN IONS IN THE PH 5 SOLUTION
Description : Who was the first American chemist to receive a Nobel Prize? He was selected in 1914 for his precise determination of atomic weights. w) Edward Frankland x) Theodore Richards y) John Bardeen z) Paul Dirac
Last Answer : ANSWER: X -- THEODORE RICHARDS
Description : For the coagulation of 200 mL of `As_(2)S_(3)` solution, 10 mL of 1 M NaCl is required. What is the coagulating value (number of milli moles of solute
Last Answer : For the coagulation of 200 mL of `As_(2)S_(3)` solution, 10 mL of 1 M NaCl is required. What is the coagulating ... A. `200` B. `100` C. `50` D. `25`
Description : The binding energy of a nucleus is defined as one of the following. Is this definition: w) the energy equivalent to its mass x) the mass difference between its neutrons and protons y) the energy ... the difference between the mass of the nucleus and the sum of the masses of its protons and neutrons
Last Answer : ANSWER: Z -- THE DIFFERENCE BETWEEN THE MASS OF THE NUCLEUS AND THE UM
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
Description : A wooden board 2 meters long, 30 centimeters wide and 4 centimeters thick floats in water with 1 centimeter of its thickness above the surface. The mass of the board is: w) 1.8 kilograms x) 18 kilograms y) 24 kilograms z) 176 kilograms
Last Answer : ANSWER: X -- 18 KILOGRAMS
Description : The rest mass of an electron is closest to: w) 10-15 kilograms x) 10-17 kilograms y) 10-30 kilograms z) 10-50 kilograms
Last Answer : ANSWER: Y -- 10-30 KILOGRAMS (accept 9.11 x 10-31kg)
Description : The mass, in kilograms, of an object whose weight on earth at sea level is 490 newtons is: w) 50 kilograms x) 100 kilograms y) 225 kilograms z) 1,100 kilograms
Last Answer : ANSWER: W -- 50 KILOGRAMS
Description : The time needed for a net force of 10 newtons to change the velocity of a 5 kilograms mass by 3 meters/second is: w) 1.5 seconds x) 6 seconds y) 16.7 seconds z) 150 seconds
Last Answer : ANSWER: W -- 1.5 SECONDS
Description : What are the solvent and solute in a solution containing 100 g of ethanol and 3 g of sucrose?
Last Answer : Feel Free to Answer