Description : Which will have greater molar conductivity ? Solution containing 1 mol KCl in 200 cc or 1 mol of KCl in 500 cc.
Last Answer : Ans. 1 mol of KCl in 500 cc.
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 : What is the strength (expressed as a percentage) of a 200 milliliter solution that contains 20 grams of dextrose?
Last Answer : The mass/mass percentage is 9.09 % (with the underlined digitsrepeating)
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)
Description : Hydrazine `N_(2)H_(4)` acts as a reducing agent. To prepare 100 ml of 2 N hydrazine solution, the weight required will be
Last Answer : Hydrazine `N_(2)H_(4)` acts as a reducing agent. To prepare 100 ml of 2 N hydrazine solution, the weight required will ... B. 1.6 g C. 3.2 g D. 0.8 g
Description : 20 gram of caustic soda are dissolved in water to prepare 500 ml of solution. Find the normality and molarity of solution.
Last Answer : Basis: 500 ml solution. Weight of solute = 20 gm Molecular weight of NaOH = 40 Gram moles of solute = 20/40 = 0.5 Molarity = Gram moles/ Volume of solution in lit 0.5/0.5 = 1 M Normality = gram equivalent of solute/ volume of solution in lit = 0.5/0.5 = 1N
Description : In human females, ova are produc ed in
Last Answer : In human females, ova are produc ed in A. Ovarian follicles B. Oviduct C. Uterus D. Vagina
Description : Which metal is essential for the produc- tion of haemoglobin
Last Answer : Iron
Description : Which factor is essential for the produc- tion of thyroxin?
Last Answer : Iodine
Description : _____ are industrial pro ial products t ducts that aid in t hat aid in the buyer he buyer’s produc ’s production or o tion or operations, in ions, including installations and accessory equipment. a. Materials b. Parts c. Capital items d. Specialty products
Last Answer : c. Capital items
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
Description : How many milligrams in one fourth of a milliliter?
Last Answer : There can be no conversion. A milligram is a measure of mass. A millilitre is a measure of volume. The two measure different things and, according to basic principles of dimensional analysis, ... millilitre of air. How many milligrams? Next consider the same volume of lead. How many milligrams?
Description : What is the relationship between a milliliter and a cubic centimeter?
Last Answer : The are the same
Description : What is a household object that weighs 1 milliliter?
Last Answer : Hi
Description : Which toner yields a higher percentage of pages per milliliter?
Last Answer : Since it's all going through the same print head all of them are going to print off the same number of pages per millimeter.
Description : Could someone write me how it is calculated? Please write and calculate :)
Last Answer : I'll try, I just don't know if I'm allowed to contribute. In your case, these are weight percentages. Weight percentages indicate the number of grams of solute in 100 grams of solution. Thus: 3 g of ... water gives 250 g 3% sodium carbonate solution I don't know why I don't want to print in bold.
Description : Express the relation among the cell constant, the resistance of the solution in the cell and the conductivity of the solution. How is the conductivity of a solution related to its molar conductivity -Chemistry
Last Answer : 1R×1a = Conductance (C) × Cell constant Molar conductance : (Λm) = K×1000c.
Description : Express the relation between conductivity and molar conductivity of a solution held in a cell. -Chemistry
Last Answer : Λm = KC= Conductivity Concentration
Description : cm. What is molar solution ?
Last Answer : : If half a mole ( 0.5 mole) of liquid per liter volume of a solution is dissolved at a given temperature , then the solution should be dissolved in cm. Called molar solution.
Description : What is molar solution ?
Last Answer : Molar solution: If one mole of liquid is dissolved in one liter of solution, it is called 1 molar solution. For example, if 32 grams of oxygen per liter is dissolved.
Description : FeSO4 solution mixed with (NH4 ) 2 SO4 solution in 1 : 1 molar ratio gives the test of Fe2+ ion but CuSO4 solution mixed with aqueous ammonia in 1 : 4 molar ratio does not give the test of Cu2+ ion. Explain why ?
Last Answer : When FeSO4 and (NH4 ) 2 SO4 solution are mixed in 1 : 1 molar ratio, a double salt is formed. It has the formula FeSO4 (NH4 ) 2 SO4 . 6 H2O. In aqueous solution, the salt dissociates. When CuSO4 and NH3 are mixed in the molar ratio of 1 : 4 in solution, a complex [Cu (NH3 ) 4 ] SO4 is formed.
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 : 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
Description : A sample of grapefruit juice at 25 degrees Celsius has a hydronium concentration of 1.78 X 10-3 molar. What is the pH of the solution? w) 2.22 x) 2.75 y) 3.25 z) 6.33
Last Answer : ANSWER: X -- 2.75
Description : If one begins with a 12 Normal solution of HCl and wishes to make a 2 Molar solution, what will be the ratio of 12N HCl to the final solution volume?
Last Answer : ANSWER: 1:6
Description : What is the pH of an aqueous solution of 0.1 molar HCl? w) 7 x) 13 y) 1 z) 3
Last Answer : ANSWER: Y -- 1
Description : The pH of a 0.005 molar solution of calcium hydroxide is:
Last Answer : ANSWER: 12
Description : The amount of wet NaOH containing 15% water required to prepare 70 liters of 0.5 N solution is:
Last Answer : The amount of wet NaOH containing 15% water required to prepare 70 liters of 0.5 N solution is: A. 1.65 kg B. 1.4 kg C. 16.5 kg D. 140 kg
Description : HOW TO PREPARE 200 mL O.75 N NaOH SOLUTION?
Last Answer : Dissolve 6 g dry sodium hydroxide in 200 mL water.
Description : Which of the following would be least soluble in water? w) Carbon Tetrachloride x) Sodium Oxide y) Magnesium Bromide z) Potassium Phosphate
Last Answer : ANSWER: W -- CARBON TETRACHLORIDE
Description : Sodium chloride molar mass?
Last Answer : The molar mass of sodium chloride is 58,44.
Description : The chemical name or Quartz is – (1) Calcium oxide (2) Calcium phosphate (3) Sodium phosphate (4) Sodium silicate
Last Answer : (4) Sodium silicate Explanation: Quartz is a compound of one part silicon and two parts of oxygen, silicon dioxide, SiO2. Quartz is the most abundant silica mineral. It is used in a ... silicon alloys, etc. The various grades of sodium silicate are characterized by their SiO2:Na2O weight ratio.
Description : An acid having basicity one is - (1) Sodium dihydrogen phosphate (2) Disodium hydrogen phosphate (3) Sodium phosphate (4) Phosphoric acid
Last Answer : (2) Disodium hydrogen phosphate Explanation: The basicity of an acid is the number of hydrogen ions (H+) which can be produced by the ionization of one molecule of the acid in aqueous solution. ... Similarly, the basicity of Disodium phosphate (Na2HPO4) is one since it has one H+ displaceable ion.
Description : The chemical name of quartz is (1) Calcium oxide (2) Calcium phosphate (3) Sodium phosphate (4) Sodium silicate
Last Answer : Sodium silicate
Description : An acid having basicity one is (1) Sodium dihydrogen phosphate (2) Disodium hydrogen phosphate (3) Sodium phosphate (4) Phosphoric acid
Last Answer : Disodium hydrogen phosphate
Description : Starting with sodium chloride how would you proceed to prepare sodium hydroxide ?
Last Answer : Ans. Sodium hydroxide is obtained by electrolysis of an aq.solution of NaCl in castner kellner cell using Mercury cathode and carbon anode .Sodium metal which is discharged at cathode combines with ... The sodium amalgam thus obtained is treated with water to form sodium hydroxide and hydrogen gas.
Description : A solution containing 2.675 g of `CoCl_(3).6NH_(3)` (molar mass `= 267.5 g mol^(-1)`) is passed through a cation exchanger. The chloride ions obtained
Last Answer : A solution containing 2.675 g of `CoCl_(3).6NH_(3)` (molar mass `= 267.5 g mol^(-1)`) is passed through a ... _(3)]` D. `[CoCl(NH_(3))_(5)]Cl_(2)`
Description : What is the molar mass of haemocyanin and the freezing point of the solution when an aqueous solution is prepared by dissolving 1.5 grams of haemocyanin a protein obtained from crabs in 0.25 litres of?
Last Answer : Haemocyanins are a group of proteins.
Description : In an organic compound of molar mass `108 gm mol^-1 C, H and N` atoms are presents in `9 : 1 : 3.5` by mass. Molecular can be
Last Answer : In an organic compound of molar mass `108 gm mol^-1 C, H and N` atoms are presents in `9 : 1 : 3.5` by mass. ... (5)H_(6)N_(3)` D. `C_(4)H_(18)N_(3)`
Description : in titration of 25 mL of the solution containing Cu2+ with the concentration of 0.01 molar , with SCN – (0.01 Molar) , if we use the indicator that changed its color in PSCN= 9. Calculate the error of titration PKSP(CuSCN) =13.4?
Last Answer : just the color change from the indicator. Thus, a careful selection of the indicator will reduce the indicator error. For example, if the equivalence point is at a pH of 8.4, then the ... are in the range of aqueous pH changes are of little use. Instead, the titrant and indicator used
Description : Under ambient conditions, which among the following surfactants will form micelles in aqueous solution at lowest molar concentration ?
Last Answer : Under ambient conditions, which among the following surfactants will form micelles in aqueous solution at lowest molar ... N (CH_(3))_(3)Br^(-)`
Description : Among the following, which surfactant will form micelles in aqueous solution at the lowest molar concentration at ambient conditions?
Last Answer : Among the following, which surfactant will form micelles in aqueous solution at the lowest molar concentration at ambient ... (+)(CH_(3))_(3)Br^(-)`
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 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 : 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 : 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 : Partial molar free energy of an element A in solution is same as its (A) Chemical potential (B) Activity (C) Fugacity (D) Activity co-efficient
Last Answer : (A) Chemical potential
Description : A vibrating machine of 100 kg is mounted on a rubber pad which has stiffness of 500 N/m. Determine force transmitted to the foundation if the unbalanced force 500 N acts on it. The frequency ratio (ω/ω n ) is 1.5 and ξ = 0.5 A. 461.62 N B. 400.23 N C. 450 N D. Insufficient data
Last Answer : A. 461.62 N