30.0 cm3 of aqueous sodium hydroxide containing 8.0 g per litre of sodium hydroxide were completely neutralised by 0.294 g of a dibasic acid. Determine the relative formula mass of the dibasic acid. (Na = 23.0 ; O = 16.0 ; H 1.0)

Q: Elixirs such as Alka-Seltzer use the reaction of sodium bicarbonate with citric acid in aqueous…

A: Mass of NaHCO3 = 9.2×102 mg The balanced chemical equation for the reaction of sodium bicarbonate…

Q: Given a raw material of 3 kg sodium borate, 1.5 kg hydrochloric acid, and its actual yield of 1.5 kg…

A: The reaction considered is, Na2B4O7 + 2 HCl + 5H2O→4H3BO3 + 2 NaCl

Q: What is the percent by mass (%m/m) concentration of sodium bromide (NaBr) in a solution prepared by…

A: % m/m is defined as  % m/m = mass of solute X 100 / mass of solution  mass of solution = mass of H2O…

Q: Calculate the percent by mass of potassium nitrate in a solution made from 67.0g KNO3 and 447 mL of…

A: Here we use formula mass percentage , that is ( Mass of solute/ Mass of solution)* 100  Mass of…

Q: If an mL of Hydrochloric Acid is equivalent to 1.5mL of 0.5N Sodium Hydroxide, the volume of alkali…

A:

Q: Sulfuric acid can be manufactured using the reaction: 2 S(s) + 3 02(g) + 2 H2O(1) → 2 H2SO.(aq) If a…

A:

Q: What volume (L) of 0.450 M HNO3 is required to neutralize a solution prepared by dissolving 23.5 g…

A:

Q: Write chemical equations for each of the following chemical and physical processes: (a)…

A: A physical process is one in which no chemical reaction occurs and no chemical bond is formed or…

Q: Calculate the percent by mass of potassium nitrate in a solution made from 67.0 g KN0, and 447 mL of…

A: Given: Mass of KNO3 = 67 g The volume of water = 447 mL The density of water = 0.997 g/mL Standard…

Q: A student prepares aspirin using 15.096 grams of salicylic acid (MW = 138 g/mol) and 5.91 mL of…

A:

Q: In the spring of 1984, concern arose over the presence of ethylene dibromide, or EDB, in grains and…

A: The mass and moles of EDB in one flour is calculated as,

Q: An impure sample of table salt that weighed 0.8421 g when dissolved in water and treated with excess…

A: Sodium chloride reacts with silver nitrate to form silver chloride and sodium nitrate.

Q: Aspirin, C6H4  (CO2H)  (CO2CH3), can be prepared in the chemistry laboratory by the reaction of…

A: The correctly balanced reaction (there is 2 missing in aspirin in the given reaction) taking place…

Q: The density of concentrated nitric acid is 1.42 g/mL, and its concentration is 71.0 % HNO3 by mass.…

A: In the given question we have to calculate the volume of stock Solution i.e concentrated HNO3 to…

Q: Q3: A: What mass of AgNO3 is needed to convert 3.46g of Na2CO3 to Ag2CO3, and calculate the mass of…

A:

Q: Consider Palmitic acid C16H32O2, a common fatty acid used in the manufacture of soap. A solution of…

A: Given, Weight of palmitic acid =112 g Volume of benzene(solvent) = 725 mL density of the solution…

Q: Consider Palmitic acid C16H32O2, a common fatty acid used in the manufacture of soap. A solution of…

A: Given: Given: Amount of the solute, mP = 112 g Volume of the solvent, VB = 725 mL = 0.725 L Also,…

Q: a) What mass of strontium nitrate (Sr(NO3)2) would be required to prepare 2.000 L of a 0.0180 M…

A:

Q: Q3: A: What mass of AgNO3 is needed to convert 3.46g of NażCO3 to Ag2CO3, and calculate the mass of…

A: A. 1 mole of sodium carbonate reacts with 2 moles of silver nitrate      105.98 g of sodium…

Q: Consider Palmitic acid C16H32O2, a common fatty acid used in the manufacture of soap. A solution of…

A:

Q: Write chemical equations for each of the following chemical and physical processes: (a)…

A: Answer:- This question is answered by writing the chemical equation for the given both chemical and…

Q: 4 NH3(g) + 5 O2(g) -----------> 4 NO(g) + 6 H2O(g) What mass of nitric oxide can be formed from a…

A:

Q: A student prepares aspirin using 17.530 grams of salicylic acid (MW = 138 g/mol) and 5.00 mL of…

A: The balanced reaction is as follows:        C7H6O3    +    C4H6O3     →     C9H8O4      +…

Q: What are the molarities of the following solutes? a. Urea, CO(NH2)2, if 98.3 mg of the 97.9% pure…

A: The molarity of a solution is calculated by the formula: M=nM×V Where, n is the number of moles. M…

Q: A 30.141 mg sample of a chemical known to contain only carbon, hydrogen, sulfur, and oxygen is put…

A: To determine the empirical formula , we would determine the moles of Carbon, Hydrogen , sulfur and…

Q: The molecule of the week is Tetraethyl orthosilicate (TEOS) of which 120,000 metric tons (1 metric…

A: The compound Tetraethyl orthosilicate (TEOS) has a molecular formula of C8H20O4Si

Q: Ca5(PO4)3F + 5H2SO4 + 10H2O → 3H3PO4 + 5CaSO4.2H2O + HF If every kilogram of fluoroapatite yields…

A:

Q: A student prepares aspirin using 2.409 grams of salicylic acid (MW = 138 g/mol) and 5.71 mL of…

A:

Q: A solution containing 150 grams of CaCl2 (110.98 g/mol) is dissolved in 1.00 L of water. What is the…

A:

Q: Hydrazine, N2H4, is produced commercially by the reaction of ammonia, NH3, with sodium hypochlorite…

A: Consider the given information is as follows; Mass of ammonia NH3 = 80.5 metric tons = 80500 kg =…

Q: 05 A sample of limestone (containing calcium carbonate, CaCO3) weighing 438 mg is treated with…

A:

Q: In the standardization of NaOH solution, 0.8211 g potassium hydrogen phthalate (204.22 g/mol) is…

A:

Q: Urea [(NH),CO] is prepared by reacting ammonia with carbon dioxide: 2 NH3 + CO2 (NH),CO() + d. How…

A: According to the law of conversation of mass, mass can neither be created nor be destroyed. So,…

Q: How many grams of sulfuric acid (H2SO4) will be formed from the reaction of 100 grams of sulfur…

A: Reaction of SO3 with water to form H2SO4 can be represented as SO3 + H2O ------> H2SO4

Q: A solution is prepared by dissolving 125 g sucrose (C12H22O11) in 135 g H2O.  Calculate the mass %…

A: Given; The mass of the solute is 125 g. The mass of water is 135 g.

Q: solution is prepared by dissolving 37.3 g of potassium chloride in distilled water. What is the…

A: A) Molarity (M) = 2.0M Mass = 37.3 g Molar mass of KCl = 74.6 g/mol Mole = mass/molar mass    =…

Q: Calculate mass (in grams) of sodium in 8.5 g of sodium-containing food additive. NaC7H5O2 (sodium…

A: First determine the moles of sodium benzoate NaC7H5O2 as; Mass of sodium benzoate NaC7H5O2 = 8.5 g…

Q: Q3: A: What mass of AgNO3 is needed to convert 3.46g of Na2CO3 to Ag2CO3, and calculate the mass of…

A:

Q: A 12.0 wt% solution of CaCl2 (110.98 g/mol) has a density of 1.107 g/mL. What is the mass, in…

A: Since you have posted mulitiple question in a session, we are entitiled to answer only first…

Q: Calculate the mass for CaCl, if the percentage by mass of the solution is 10.00 %. Given mass of the…

A: Given is, % by mass = 10 Mass of solution= 15 g

Q: Fluoridation is the process of adding fluorine compounds to the drinking water. Fluoridated water…

A: The concentration term 1 ppm means that there is 1 mg present in 1 L solution. 1 gallon =3.78541 L…

Q: Write chemical equations for each of the following chemical and physical processes: (a)…

A: given all the statements, write the equation

Q: Given a raw material of 2000 g Salicylic acid and 2500 g Acetic Anhydride, the actual yield is 1180…

A: % mass composition is given by  = (molar mass / given mass) × 100

Q: A student prepares aspirin using 2.365 grams of salicylic acid (MW = 138 g/mol) and 5.89 mL of…

A:

Q: What percentage of NaCN is carbon? A. 25 % B. 31 % C. 11 % D. 22 %

A: To calculate the percentage of carbon in NaCN we should have to know total mass of NaCN ( i.e…

Q: 33. What is the theoretical yield of aspirin if 185 kg of salicylic acid is allowed to react with…

A: Given mass of salicylic acid = 185 kg  Mass of acetic anhydride = 125 kg  Given yield = 182 kg

Q: acetic acid (CH3COOH), known as glacial acetic acid, is a liquid with a density of 1.049 g/mL at 25…

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.