0.93 g sample of NaCr(SO4)2.XH20 was heated in a crucible to get a constant mass. If the mass of the produced anhydrous salt (NaCr(SO4)2) (Molar mass = 267.1 g/mol) was 0.70 g, then the value of 'x' in the formula is ( Molar mass of H20 = 18.02 %3D g/mol). O a. 12 O b. 10 О с. 14 O d. 5 О е. 8

Q: 2. A mixture of Na2SO4 and its hydrate Na,SO4-10H2O has a mass of 1.5099 g. After heating to drive…

A: Mass percent :- The mass of a component present in 100 grams of a mixture is known as mass…

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: When 6.65 g of the hydrate NiSO4 • xH2O was heated in a vacuum, the water was driven off and 3.67 g…

A: NiSO4 . xH2O is a hydrated form of nickel Sulphate and the water involved is called water of…

Q: Barium chloride dihydrate has the formula BaCl2  ·  2H2O. Assume there is another hydrate (BaCl2…

A:

Q: 3 FeS2   +  11 O2   →  Fe3O4   +  6 SO3 100 g of iron sulfide was reacted with excess oxygen,…

A: 3 FeS2   +  11 O2   →  Fe3O4   +  6 SO3 Atomic masses Fe=56; S=32, O=16 Molecular mass of…

Q: Consider a compound that produces 5.0 g Al and 19.7 g Cl a. What is the empirical formula of this…

A: Given that : Mass of Al = 5.0 g Mass of Cl = 19.7 g The molar mass of Al is 26.98 g/mol. The molar…

Q: Like many metals, aluminum reacts with a halogen to give a metal halide. 2 Al(s) + 3 Br2(ℓ) n…

A: Since you have posted multiple questions, the answer for first question is given below. Kindly…

Q: 0.93 g sample of NaCr(SO4)2.XH20 was heated in a crucible to get a constant mass. If the mass of the…

A: Molar mass of NaCr(SO4)2.xH2O = 0.93 g = AMass of NaCr(SO4)2= 0.70g = BMolar mass ofNaCr(SO4)2 =…

Q: When 5.384 g of one of the hydrates of sodium sulfate (Na2SO4) was heated to drive off its water of…

A:

Q: 3. Derive the following equation from the class slides CB/AB C'R = CB/Ag+ CA/AA x 100 Where C'g is…

A:

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

A:

Q: Over the years, the thermite has been used for welding railroad rails, in incendiary bombs, and to…

A: Given: Mass of iron = 15.0g To find: The masses of iron(III) oxide, aluminium and maximum mass of…

Q: Aspirin has the molecular formula C3HO4. 1. What is the % C in aspirin by mass in aspirin? 2. What…

A: all answers in setp2 2,3,4 and 5

Q: Phosphorus may be determined analytically by precipitating it as MgNH4PO4 followed by ignition to…

A: Given data: Mass of sample of phosphate rock = 9.346 gms It contains 71.24% of Ca3(PO4)2 So, mass of…

Q: Cryolite, Na3AlF6(s), an ore used in the production of aluminum, can be synthesized using aluminum…

A: Given information: Mass of Al2O3 = 12.4 kg Mass of NaOH = 57.4 kg Mass of HF = 57.4 kg

Q: A compound is 54.53% C,54.53% C, 9.15% H,9.15% H, and 36.32% O36.32% O by mass. What is its…

A: The formula of a compound in which elements are represented in simple ratio is called empirical…

Q: To synthesize titanium (IV) chloride, the reaction below is used. a TIO2(s) + b C(s) + c Cl2(g) → d…

A: 2TiO2 + 3C+4Cl2 à  2TiCl4 + CO2 + 2CO   ; a=2, b=3, c=4, d=2, e=1, f=2 Mass given     35.0g    11.0g…

Q: 1. What is the mass percent of C in C2O? 2. What is the mass percent of Ca in CaBr2? 3. What is…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs,…

A: Mass of Fe = 10.1 g  Atomic mass of Fe = 55.845 g/mol  Number of moles of Fe =  10.1 / 55.845  =…

Q: 1. Ammonia reacts with diatomic oxygen to form nitric oxide and water vapor: 4NH3 + 502 ----> 4NO +…

A: Limiting reactant is the reactant that gets consumed first.  To know which is the limiting reactant,…

Q: A mixture was found to contain 1.50g NH4CI, 0.80 g NaCI, and 1.20 g SiO2. What is the percentage of…

A: Given: Mass of NH4Cl = 1.50 g Mass of NaCl = 0.80 g Mass of SiO2 = 1.20 g

Q: If the decomposition of a sample of KClO3 produces 3.29 g of  O2, what was the mass (g) of the…

A: Write balanced equation

Q: Bacterial digestion is an economical method of sewage treatment. The reaction is an intermediate…

A:

Q: A well-known reagent in analytical chemistry, dimethylglyoxime, has the empirical formula C2HANO. It…

A: The atomic massses are as follows : C: 12 g/mol H: 1 g/mol N: 14 g/mol O: 16 g/mol B : 11 g/mol

Q: In an experiment, 2.7g of compound C yielded 1.48g of C6H5CH2OCH2C6H5. What is the percentage yield?…

A:

Q: The chemical formula of lysine (a building block of proteins) is C6H14N2O2. Given that the formula…

A: Given, Formula mass of lysine, C6H14N2O2 = 146.19 amu = 146.19 g/mol

Q: Phosphorus can be prepared from calcium phosphate by the following reaction: 2Caz (PO4)2 (s) + 6SIO2…

A: Now, as we are given the mass percentage of the phosphorite mineral that is 75% by and the weight is…

Q: Hydrogen cyanide, HCN, is prepared from ammonia, air, and natural gas (CH4) by the following…

A: Given Chemical Reaction: 2NH3 + 3O2 +2CH4 -------> 2HCN +6H2O. To solve this problem we will be…

Q: Direct reaction of iodine (I2) and chlorine (Cl2) produces an iodine chloride, IxCly, a bright…

A: Empirical formula represents the smallest whole number ratio.

Q: 4.2 A compound that can be sampled or "smelled by sniffing your armpits or someone's unwashed feet,…

A: The percent of carbon, Hydrogen, Oxygen is 55.80 %, 7.03 %, 37.17 % respectively

Q: Enter your ansTwer in the provided box. One of the reactions that occurs in a blast furnace, in…

A: Given data : Mass of Fe = 1.49 × 103 kg = 1.49 × 106 g Mass of Fe2O3 = 2.38 × 103 kg

Q: Direct reaction of iodine (I2) and chlorine (Cl2) produces an iodine chloride, I,Cly, a bright…

A: As per the given data we have Mass of Iodine=0.678g Mass of IxCly=1.246g Molar mass of…

Q: The formula of a compound present in butter has a molar mass of 88.11 g / mol. If the percentage…

A: Generally the molar mass of the compound is used to determine the molecular formula of compound.…

Q: 7) What is the mass in grams 6 mol of KOH? 1) 24g 2) 56 g 3) 230 g 4) 336 g 8) A compound has…

A: 7)   Molar mass of KOH is calculated as; K=1×39.10 g/mol=39.1 g/molO=1×16 g/mol=16 g/molH=1×1.01…

Q: Titanium tetrachloride, TiCl4 , is prepared by the reaction below.…

A: Given, Mass of TiO2 = 35g. Mass of Cl2 = 38g. Mass of C = 11g. The balanced reaction for the…

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A:

Q: Chromium(III) oxide can be made from the reaction of sodium dichromate and ammonium chloride. What…

A: Given, mass of  sodium dichromate (Na2Cr2O7) = 108.7 g mass of ammonium chloride (NH4Cl) = 61.6 g…

Q: like many metals , aluminum reacts with a halogen to give a metal halide 2 Al(s) + 3 Br2(l) =…

A: 2Als      +       3Br2 l →…

Q: What is the formula (solve for x) for the original hydrated sample of copper (II) sulphate? You…

A:

Q: A metal sulfide M2S contains 14.3% of sulfur by mass. What is the identity of the metal in this…

A: mass percentage is one of the unit to express the concentration . mass percentage is calculated y…

Q: If a laboratory analysis of the mineral aegirine yields 10.0% Na, 24.2% Fe, 24.3% Si, and 41.5% O,…

A:

Q: How do I calculate the number of molecules in 6.00 ml of acetic anhydride, C4H6O3, if the density of…

A: Given : Volume of acetic anhydride = 6 mL Density of acetic anhydride =1.08 g/cm^3 ( 1 mL = 1 cm^3 )…

Q: The chemical formula of blue crystalline substance of hydrated penta-aqua copper II sulphate is…

A: Molecular formula: CuSO4.5H2O Chemical formula: CuH10O9S Molar mass of CuSO4.5H2O = 64 + 10 x 1 + 9…

Q: A 2.52-g sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur is…

A: The compound contains carbon (C), hydrogen (H), nitrogen (N), oxygen (O) and sulphur (S). In three…

Q: ron is biologically important in the transport of oxygen by red blood cells from the lungs to the…

A: 2.63 x 1013 red blood cells     2.90 g of iron molar mass Fe = 55.85 g/mol first we will calculate…

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

A:

Q: The compound As2I4 is synthesized by reaction of arsenic metal with arsenic triiodide. If a solid…

A: We have to predict the mass of As2I4 that can be prepared and the mass that is actually isolated.

Q: 11. The compound As214 is synthesized by reaction of arsenic metal with arsenic triiodide. If a…

A: The reaction between As metal and AsI3 can be shown as: As+AsI3→As2I4 This is an imbalance chemical…

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.