How much would the boiling of water increase if 4 mol of NaCl were added to 1 kg of water?

How much would the boiling of water increase if 4 mol of NaCl were added to 1 kg of water?
by

1 Answer

Answer :

4.08 C
by
selected by

Related questions

How much would the boiling point of water increase if 4 mol of NaCl were added to 1kg of water?

Description : How much would the boiling point of water increase if 4 mol of NaCl were added to 1kg of water?

Last Answer : Feel Free to Answer

How much would the boiling point of water increase if 4 mol of sugar were added to 1 kg of water kb0.51c cmolkgfor water nd I1 for sugar?

Description : How much would the boiling point of water increase if 4 mol of sugar were added to 1 kg of water kb0.51c cmolkgfor water nd I1 for sugar?

Last Answer : Feel Free to Answer

What would the final freezing point of water be if 3 mol of sugar were added to 1 kg of water kf1.86 c molkg for water and I 1 for sugar?

Description : What would the final freezing point of water be if 3 mol of sugar were added to 1 kg of water kf1.86 c molkg for water and I 1 for sugar?

Last Answer : Feel Free to Answer

Calculate the enthalpy of vaporisation per mole for ethanol. Given `DeltaS = 109.8 J K^(-1) mol^(-1)` and boiling point of ethanol is `78.5^(@)`.

Description : Calculate the enthalpy of vaporisation per mole for ethanol. Given `DeltaS = 109.8 J K^(-1) mol^(-1)` and boiling point of ethanol is `78.5^(@)`.

Last Answer : Calculate the enthalpy of vaporisation per mole for ethanol. Given `DeltaS = 109.8 J K^(-1) mol^(-1)` ... KJ mol^(-1)` D. Some more data is required

In \( III ^{ rd } \) group of salt analysis for cations \( NH _{4} Cl \) and \( NH _{4} OH \) are added as group reagents. Which of the following can be used instead of \( NH _{4} Cl \) ?(a) \( NaCl \)(b) \( \left( NH _{4}\right)_{2} SO _{4} \)(c) \( \left( NH _{4}\right)_{2} C _{2} O _{4} \)(d) \( NH _{4} NO _{3} \)

Description : In \( III ^{ rd } \) group of salt analysis for cations \( NH _{4} Cl \) and \( NH _{4} OH \) are added as group reagents. Which of the following can be used instead of \( NH _{4} Cl \) ?(a) \( NaCl \)(b) \( \left( NH _ ... \)(c) \( \left( NH _{4}\right)_{2} C _{2} O _{4} \)(d) \( NH _{4} NO _{3} \)

Last Answer : In \( III ^{ rd } \) group of salt analysis for cations \( NH _{4} Cl \) and \( NH _{4} OH \) are added as ... O _{4} \) (d) \( NH _{4} NO _{3} \)

What is observed (i) When a beam of light is pressed through a colloidal sol (ii) An electrolyte, NaCl is added to hydrated ferric oxide sol. (iii) Electric current is passed through colloidal sol.

Description : What is observed (i) When a beam of light is pressed through a colloidal sol (ii) An electrolyte, NaCl is added to hydrated ferric oxide sol. (iii) Electric current is passed through colloidal sol.

Last Answer : Ans.: (i) Tyndal Effect (iv) Coagulation (v) Electrophoresis

What is the molality of a solution the has 3 mol of glucose on 6 kg of water?

Description : What is the molality of a solution the has 3 mol of glucose on 6 kg of water?

Last Answer : Molality (m) is moles of solute per kg of solvent. 3 moles/6 kg= 0.5 molal.

Crude oils containing more than __________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a 'salty crude'. (A) 1 (B) 5 (C) 15 (D) 25

Description : Crude oils containing more than __________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a 'salty crude'. (A) 1 (B) 5 (C) 15 (D) 25

Last Answer : (B) 5

Tetraethyl lead (TEL) is added to petrol to (a) prevent its freezing (b) increase its boiling point (c) increase its flash point (d) increase its anti-knocking rating

Description : Tetraethyl lead (TEL) is added to petrol to (a) prevent its freezing (b) increase its boiling point (c) increase its flash point (d) increase its anti-knocking rating

Last Answer : Ans:(d)

A 19 year-old female is referred following a visit to the dentist where marked erosion of her teeth was noted. She was entirely asymptomatic and her only medication was the oral contraceptive pill. On examination her blood pressure was 110/70 mmHg and her body mass index was 21.5 kg/m2 (18 - 25). Investigations sodium 135 mmol/l potassium 2.1 mmol/l bicarbonate 42 mmol/l urea 2.6 mol/L corrected calcium 2.08 mmol/ alkaline phosphatase 201 iu/l (50-110) What is the most likely diagnosis? 1) Bulimia nervosa 2) Conn's syndrome 3) Laxative abuse 4) Pregnancy 5) Primary hypoparathyroidism

Description : A 19 year-old female is referred following a visit to the dentist where marked erosion of her teeth was noted. She was entirely asymptomatic and her only medication was the oral contraceptive pill ... ) Bulimia nervosa 2) Conn's syndrome 3) Laxative abuse 4) Pregnancy 5) Primary hypoparathyroidism

Last Answer : Answers-5 This patient has tooth erosion associated with hypokalaemic metabolic alkalosis and hypocalcaemia. This suggests a diagnosis of hypoparathyroidism. Conn's is unlikely in this age group, is ... raised alkaline phosphatase would not be expected. Early pregnancy would not fit this picture.

Unit of luminous intensity is A. m B. kg C. cd D. mol

Description :  Unit of luminous intensity is A. m B. kg C. cd D. mol

Last Answer : . m

Molecular volume of any perfect gas at 600 x 103 N/m2 and 27°C will be  (a) 4.17m3/kgmol  (b) 400 m3/kg mol  (c) 0.15 m3/kg mol  (d) 41.7 m3/kg mol  (e) 417m3/kgmol.

Description : Molecular volume of any perfect gas at 600 x 103 N/m2 and 27°C will be  (a) 4.17m3/kgmol  (b) 400 m3/kg mol  (c) 0.15 m3/kg mol  (d) 41.7 m3/kg mol  (e) 417m3/kgmol.

Last Answer : Answer : a

Should salt be added to the cooking water while boiling pasta?

Description : Should salt be added to the cooking water while boiling pasta?

Last Answer : You don't have to add salt to the cooking water. The salt adds flavor and raises the boiling point a bit, but you can boil the pasta without the salt.

To get the hard boiled eggs, why common salt is added to water before boiling the eggs?

Description : To get the hard boiled eggs, why common salt is added to water before boiling the eggs?

Last Answer : Due to addition of common salt the B. P. of the salt containing water elevated, hence the egg at high temperature becomes hard.

In cold countries ethylene glycol is added to water in car radiators. This helps to (a) Reduce the viscosity (b) Make water a better lubricant (c) Lower the freezing point (d) Lower the boiling poin

Description : In cold countries ethylene glycol is added to water in car radiators. This helps to (a) Reduce the viscosity (b) Make water a better lubricant (c) Lower the freezing point (d) Lower the boiling poin

Last Answer : Lower the freezing point

Pick up the correct statement from the following: (A) Due to boiling, the bacterias present in water can be destroyed (B) Lime may be used for softening hard water (C) Excess lime when added to water, raises the pH value of water (D) All the above

Description : Pick up the correct statement from the following:  (A) Due to boiling, the bacterias present in water can be destroyed  (B) Lime may be used for softening hard water  (C) Excess lime when added to water, raises the pH value of water  (D) All the above 

Last Answer : (D) All the above 

Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser? (A) Ethylene glycol (B) Stearic acid estors (C) Tricresyl phosphate (D) Esters of phthalic acid

Description : Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser? (A) Ethylene glycol (B) Stearic acid estors (C) Tricresyl phosphate (D) Esters of phthalic acid

Last Answer : (A) Ethylene glycol

Mercaptans are (A) Low boiling sulphur compounds(B) Added in LPG cylinders to detect gas leakage by its smell(C) Undesirable in petrol, as they reduce its octane number(D) All (A), (B) and (C)

Description : Mercaptans are (A) Low boiling sulphur compounds (B) Added in LPG cylinders to detect gas leakage by its smell (C) Undesirable in petrol, as they reduce its octane number (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

. A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because (A) Total heat transfer area of all the effects is -less than that in a single effect evaporator system (B) Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect (C) Boiling point elevation in a single effect system is much higher than that in any effect in a multi-effect system (D) Heat transfer co-efficient in a single effect is much lower than that in any effect in a multi-effect system

Description : . A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because (A) Total heat transfer area of ... in a single effect is much lower than that in any effect in a multi-effect system

Last Answer : (B) Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect

Pick out the wrong statement. (A) Bubble size increases with the dynamic viscosity of the liquid in case of nucleate pool boiling (B) Thermal conductivity of a dry material is more than that of the damp material (C) Ratio of its capacity to economy equals the steam consumption in kg/hr in an evaporator (D) Vaporisation of organic substances in evaporator mostly causes foam formation

Description : Pick out the wrong statement. (A) Bubble size increases with the dynamic viscosity of the liquid in case of nucleate pool boiling (B) Thermal conductivity of a dry material is more than ... in kg/hr in an evaporator (D) Vaporisation of organic substances in evaporator mostly causes foam formation

Last Answer : (B) Thermal conductivity of a dry material is more than that of the damp material

It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30°C. The boiling point of the solution is 110°C, the latent heat of vaporisation is 2100 kJ/kg and the specific heat of the solution is 4 kJ/kg.K. The rate at which the heat has to be supplied in (kJ/min) to the evaporator is (A) 3.06 × 10 5 (B) 6.12 × 10 5 (C) 7.24 × 10 5 (D) 9.08 × 10

Description : It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30°C. The boiling point of the solution is 110°C, the latent heat of ... 3.06 10 5 (B) 6.12 10 5 (C) 7.24 10 5 (D) 9.08 10

Last Answer : (A) 3.06 × 10

Which of the following situations can be approximated to a steady state heat transfer system? (A) A red hot steel slab (having outside surface temperature as 1300°C) exposed to the atmospheric air at 35°C (B) 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless steel pipe exposed to atmospheric air at 35°C (C) Boiling brine kept in open vessel when the bottom surface temperature of the vessel is maintained constant at 180°C (D) A sub-cooled refrigerant liquid at 8°C flowing at the rate of 6 Kg/minute through a copper pipe exposed to atmospheric air at 35°C

Description : Which of the following situations can be approximated to a steady state heat transfer system? (A) A red hot steel slab (having outside surface temperature as 1300°C) exposed to the atmospheric air at ... flowing at the rate of 6 Kg/minute through a copper pipe exposed to atmospheric air at 35°C

Last Answer : (B) 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless steel pipe exposed to atmospheric air at 35°C

In 1 kg mixture of sand and iron, 20% is iron. How much sand should be added so that the proportion of iron becomes 10%? a) 1 kg b) 200 gms c) 800 gms d) 1.8 kg e) None of these

Description : In 1 kg mixture of sand and iron, 20% is iron. How much sand should be added so that the proportion of iron becomes 10%? a) 1 kg b) 200 gms c) 800 gms d) 1.8 kg e) None of these

Last Answer : Answer: A If we add x grams of sand, the total amount would be 1,000 + x grams of mixture and we need 200 grams of iron to be 10% of that: 0.1(1,000 + x) = 200 --> x = 1,000. 

By mixing two brands of dal and selling the mixture at the rate of Rs.354 per kg a shopkeeper makes a profit of 36%. If to every 4 kg of one brand costing Rs.400 per kg, 6kg of other brand is added. Then how much per kg does the other brand cost?

Description : By mixing two brands of dal and selling the mixture at the rate of Rs.354 per kg a shopkeeper makes a profit of 36%. If to every 4 kg of one brand costing Rs.400 per kg, 6kg of other brand is added. Then how much per kg does the other brand cost?

Last Answer : Let the cost price of other brand be Rs x' per kg  cost price of 10 kg = Rs (4 * 400 + 6 * x)  = Rs (1600 +6x)  Selling price of 10 kg = Rs (10 * 354 )  = Rs.3540  Therefore 3540 -(1600 + 6x)/ ... 6x/1600 + 6x = 0.36  1940 - 6x = 576 + 2.16x  x=167.15  so the cost of other brand = Rs.167.15

In 1 kg mixture of iron and carbon, 40% is carbon. How much iron should be added so that the proportion of carbon becomes 20% a)1.5kg b)2kg c)3kg d)5kg

Description :  In 1 kg mixture of iron and carbon, 40% is carbon. How much iron should be added so that the proportion of carbon becomes 20% a)1.5kg b)2kg c)3kg d)5kg e)1kg

Last Answer : E Quantity of the mixture : Quantity of iron = 20 : 20 = 1 : 1 Given that quantity of the mixture = 1 kg Hence quantity of iron to be added = 1 kg

To make a solution for filling radiator one bag of washing soda and 0.5 kg of kerosene oil should be added in water amounting a) 6 kg b) 8 k8 c ) 10 kg d) 12 kg

Description : To make a solution for filling radiator one bag of washing soda and 0.5 kg of kerosene oil should be added in water amounting a) 6 kg b) 8 k8 c ) 10 kg d) 12 kg

Last Answer : c ) 10 kg

A 1-kg steam-water mixture at 1.0 MPa is contained in an inflexible tank. Heat is added until the pressure rises to 3.5 MPa and the temperature to 400°. Determine the heat added.  a) 1378.7 kJ  b) 1348.5 kJ  c) 1278,7 kJ  d) 1246,5 kJ Formula: Q = (h2 – p2v2) –(h1 –p1v1)

Description : A 1-kg steam-water mixture at 1.0 MPa is contained in an inflexible tank. Heat is added until the pressure rises to 3.5 MPa and the temperature to 400°. Determine the heat added.  a) 1378.7 kJ  b) 1348.5 kJ  c) 1278,7 kJ  d) 1246,5 kJ Formula: Q = (h2 – p2v2) –(h1 –p1v1)

Last Answer : 1378.7 kJ

In a boiler enthalpy of water supplied was 2000 kJ/kg. Enthalpy being added by fuel combustion is 3200 kJ/kg. Using first law of thermodynamics, find amount of heat supplied if steam generation rate is 10 tons per hour.

Description : In a boiler enthalpy of water supplied was 2000 kJ/kg. Enthalpy being added by fuel combustion is 3200 kJ/kg. Using first law of thermodynamics, find amount of heat supplied if steam generation rate is 10 tons per hour.

Last Answer : Heat supplied Q = m (h2-h1) …….(Steady flow energy equation for boiler) ; h2=3200 KJ/kg h1=2000 KJ/kg m = 10 Tons /hour = (10 x 1000)/3600 kg/sec = 2.77 Kg/sec Q = 2.77(3200-2000) = 3324 KJ/sec heat supplied for 10 Tons/hr steam generation

Calculate quantity of water to be added for casting cubes in laboratory by 12.5 kg cement if w/c ratio 0.45.

Description : Calculate quantity of water to be added for casting cubes in laboratory by 12.5 kg cement if w/c ratio 0.45. 

Last Answer : As w/c = (weight of water / weight of cement)  w/c = (Ww / Wc)  0.45 = (Ww / 12.5)  Ww = (0.45x12.5)  Ww = 5.625 kg or 5.625 Litres

Assertion: Coacervates are believed to be precursors of life. Reason: Coacervates were self duplicating aggregates of proteins surrounded by lipid mol

Description : Assertion: Coacervates are believed to be precursors of life. Reason: Coacervates were self duplicating aggregates of proteins surrounded by lipid mol

Last Answer : Assertion: Coacervates are believed to be precursors of life. Reason: Coacervates were self duplicating ... both the assertion and reason are false.

The mass of a box measured by a grocer’s balance is 2.3 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box.

Description : The mass of a box measured by a grocer’s balance is 2.3 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box.

Last Answer : The mass of a box measured by a grocer's balance is 2.3 kg. Two gold pieces of masses ... in the masses of the pieces to correct significant figures?

There are 1.36 kg of gas, for which R = 377 J/kg.k and k = 1.25, that undergo a nonflow constant volume process from p1 = 551.6 kPa and t1 = 60°C to p2 = 1655 kPa. During the process the gas is internally stirred and there are also added 105.5 kJ of heat. Determine t2. (Formula: T2= T1p2/ p1)  a. 999 K  b. 888 K  c. 456 K  d. One of the above

Description : There are 1.36 kg of gas, for which R = 377 J/kg.k and k = 1.25, that undergo a nonflow constant volume process from p1 = 551.6 kPa and t1 = 60°C to p2 = 1655 kPa. During the process the gas is internally stirred and ... (Formula: T2= T1p2/ p1)  a. 999 K  b. 888 K  c. 456 K  d. One of the above

Last Answer : 999 K

The average weight of 45 passenger on board an aircraft is 50 kg. If the weight of 5 members of the crew is added, the average is reduced by half kilogram . What is the average weight of the crew members?

Description : The average weight of 45 passenger on board an aircraft is 50 kg. If the weight of 5 members of the crew is added, the average is reduced by half kilogram . What is the average weight of the crew members?

Last Answer : Total weight of 45 passenger = 45 x 50 = 2250 kg Total weight of 45 passenger and 5 crews = 50 x 49.5 = 2475 kg Total weight of 5 crews = 2475-2250 = 225kg Average weight of 5 crews = 225/5 = 45kg.

In a constant pressure process steam is generated from 10 bar and 0.8 dry condition till it become dry and saturated. Determine amount of heat added per kg of steam. From steam table at 10 bar Tsat = 179.9°C hf = 762.6 kl/kg, hg = 2776.2 kJ/kg

Description : In a constant pressure process steam is generated from 10 bar and 0.8 dry condition till it become dry and saturated. Determine amount of heat added per kg of steam. From steam table at 10 bar Tsat = 179.9°C hf = 762.6 kl/kg, hg = 2776.2 kJ/kg 

Last Answer : Constant pressure process Final condition of steam is dry saturated Enthalpy of dry steam = hg= hf + hfg =2776.2 KJ/Kg .Given Latent heat of vaporization = hfg = hg - hf =2776.2-762.6 =2013.6 KJ/Kg Initial condition ... hfg = 762.6+0.8 X 2013.6 =2373.48 KJ/Kg Heat added = hg-hw = 402.72 KJ/kg

22. \( H _{2} O \) can act either as an acid or base. Which of the following reaction best illustrate the behaviour of water as a base?(a) \( H _{2} O + NH _{3} \rightarrow OH ^{+}+ NH _{4}^{-} \)(b) \( H _{2} O + NH _{2} \rightarrow NH _{3}+ OH ^{-} \)(c) \( HCl + H _{2} O \rightarrow H _{3} O ^{+}+ Cl ^{-} \)(d) \( HCl + NaOH \rightarrow NaCl + H _{2} O \)

Description : 22. \( H _{2} O \) can act either as an acid or base. Which of the following reaction best illustrate the behaviour of water as a base?(a) \( H _{2} O + NH _{3} \rightarrow OH ^{+}+ NH _{4}^{-} \)(b) \( H _{ ... O \rightarrow H _{3} O ^{+}+ Cl ^{-} \)(d) \( HCl + NaOH \rightarrow NaCl + H _{2} O \)

Last Answer : 22. \( H _{2} O \) can act either as an acid or base. Which of the following reaction best illustrate ... HCl + NaOH \rightarrow NaCl + H _{2} O \)

What is a chemical reaction called when two chemicals react to form sodium chloride (NaCl) and water (H2O).?

Description : What is a chemical reaction called when two chemicals react to form sodium chloride (NaCl) and water (H2O).?

Last Answer : What is the answer ?

Obesity is accumulation of _______ in the body. (A) Water (B) NaCl (C) Fat (D) Proteins

Description : Obesity is accumulation of _______ in the body. (A) Water (B) NaCl (C) Fat (D) Proteins

Last Answer : Answer : C

Saline solution is given to patients of cholera because (a) Na+ prevents water loss from body (b) NaCl function as regulatory material (c) NaCl produces energy (d) NaCl is antibacterial.

Description : Saline solution is given to patients of cholera because (a) Na+ prevents water loss from body (b) NaCl function as regulatory material (c) NaCl produces energy (d) NaCl is antibacterial.

Last Answer : (a) Na+ prevents water loss from body

Which of the following is not a reversible process? (A) Expansion of an ideal gas against constant pressure (B) Atmospheric pressure vaporisation of water at 100°C (C) Solution of NaCl in water at 50°C (D) None of these

Description : Which of the following is not a reversible process? (A) Expansion of an ideal gas against constant pressure (B) Atmospheric pressure vaporisation of water at 100°C (C) Solution of NaCl in water at 50°C (D) None of these

Last Answer : C) Solution of NaCl in water at 50°C

Most of the bacteria in food are killed by ________. a) HCl b) NaCl c) HNo3 d) water

Description : Most of the bacteria in food are killed by ________. a) HCl b) NaCl c) HNo3 d) water

Last Answer : a) HCl

A 2.5 gm impure sample containing weak monoacidic base (Mol. wt. = 45) is dissolved in 100 ml water and titrated with 0.5 M HCI when of `((1)/(5))^(th

Description : A 2.5 gm impure sample containing weak monoacidic base (Mol. wt. = 45) is dissolved in 100 ml water and titrated with 0.5 M HCI when of `((1)/(5))^(th

Last Answer : A 2.5 gm impure sample containing weak monoacidic base (Mol. wt. = 45) is dissolved in 100 ml ... D. Weight percentage of base in given sample is 80%.

One moles of anhydrous `AB` dissolves in water and liberates `21.0 J mol^(-1)` of heat. The valueof `DeltaH^(Theta)` (hydration) of `AB` is `-29.4 J m

Description : One moles of anhydrous `AB` dissolves in water and liberates `21.0 J mol^(-1)` of heat. The valueof `DeltaH^(Theta)` (hydration) of `AB` is `-29.4 J m

Last Answer : One moles of anhydrous `AB` dissolves in water and liberates `21.0 J mol^(-1)` of heat. The valueof `DeltaH^(Theta) ... mol^(-1)` D. `-8.4 J mol^(-1)`

The enthalpy changes at 298 K in successive breaking of `O-H` bonds of water, are `H_(2)O(g) rarr H(g)+OH(g),DeltaH=498kJ mol^(-1)` `OH(g) rarr H(g)+O

Description : The enthalpy changes at 298 K in successive breaking of `O-H` bonds of water, are `H_(2)O(g) rarr H(g)+OH(g),DeltaH=498kJ mol^(-1)` `OH(g) rarr H(g)+O

Last Answer : The enthalpy changes at 298 K in successive breaking of `O-H` bonds of water, are `H_(2)O(g) rarr H(g)+OH(g), ... KJ mol"^(-1)` D. `463 "KJ mol"^(-1)`

If the enthalpy of vaporisation of water is `186.5 J mol^(-1)`, then entropy of its vaporisation will be

Description : If the enthalpy of vaporisation of water is `186.5 J mol^(-1)`, then entropy of its vaporisation will be

Last Answer : If the enthalpy of vaporisation of water is `186.5 J mol^(-1)`, then entropy of its vaporisation will be A. `0.5 ... (-1)` D. `2.0KJK^(-1)"mole"^(-1)`

If the enthaply change for the transition of liquid water to steam is 30 KJ `"mol"^(-1)` at `27^(@)` C . The entropy change for the process would be

Description : If the enthaply change for the transition of liquid water to steam is 30 KJ `"mol"^(-1)` at `27^(@)` C . The entropy change for the process would be

Last Answer : If the enthaply change for the transition of liquid water to steam is 30 KJ `"mol"^(-1)` at `27^(@)` C . The ... K^(-1)` D. `100 J mol^(-1)K^(-1)`

For vaporization of water at 1 atmospheric pressure the values of `DeltaH` and `DeltaS` are `40.63KJmol^(-1)` and `108JK^(-1)mol^(-1)` , respectively.

Description : For vaporization of water at 1 atmospheric pressure the values of `DeltaH` and `DeltaS` are `40.63KJmol^(-1)` and `108JK^(-1)mol^(-1)` , respectively.

Last Answer : For vaporization of water at 1 atmospheric pressure the values of `DeltaH` and `DeltaS` are `40.63KJmol^(-1)` and ` ... 373.4 K C. 293.4 K D. 273.4 K

the hardness of a water sample (in terms of Equivalents of `CaCO_(3)`) containing `10^(-3)MCaSO_(4)` Is : (Molar mass of `CaSO_(4)=1365h mol^(-1)`)

Description : the hardness of a water sample (in terms of Equivalents of `CaCO_(3)`) containing `10^(-3)MCaSO_(4)` Is : (Molar mass of `CaSO_(4)=1365h mol^(-1)`)

Last Answer : the hardness of a water sample (in terms of Equivalents of `CaCO_(3)`) containing `10^(-3)MCaSO_(4)` Is : ( ... 10 ppm B. 50 ppm C. 90 ppm D. 100 ppm

Does 0.5% nacl in isopropyl alcohol conduct electricity?

Description : Does 0.5% nacl in isopropyl alcohol conduct electricity?

Last Answer : answer:Isopropyl alcohol marketed in drug stores is generally in solution with H20. Typical alcohol percentages range form 70 to 91%. Pure water is a very poor electrical conductor, but the addition of ... and Cl - ions, which readily carry an electrical charge. Hope this helps explain the results.

Calculate the formula unit mass of NaCl and CaCl2. -Chemistry 9th

Description : Calculate the formula unit mass of NaCl and CaCl2. -Chemistry 9th

Last Answer : hii Here's your answer Molar mass of Na=23g/mol " " " Cl=35.5g/mol Formula unit mass of NaCl=23 + 35.5 = 58.5 gm per mole Molar mass of Ca=40g/mol Molar mass of Cl2= 35.5g/mol*2=70gm per mole F. U. M. = 40+70=110 gm per mole

NaOH + HCl = What is the reaction of NaCl + H2O ?

Description : NaOH + HCl = What is the reaction of NaCl + H2O ?

Last Answer : mitigation reaction.