(а) (b) N S (с) (а)

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: 7.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A:

Q: 64 g of Na2SO4 • xH2O were heated to yield 2.84 g of Na2SO4 What is the value of x?

A: NOTE : I think it is 6.4 g because 64 g of Na2SO4•xH2O will yield much more than 2.84 g of Na2SO4…

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: If all 6.0 x 105 g of carbon (C) is present as C106H263O130N16P, how many moles of C106H263O130N16P…

A: Given :  Mass of carbon present per square kilometre of ocean  = 6.0 x 105 gm  Molar mass of…

Q: 3.113 An iron bar weighed 664 g. After the bar had been standing in moist air for a month, exactly…

A: The final mass of the iron bar and rust has to be given, The mass of iron after one-eighth of the…

Q: 4. How many grams of sulfur are produced if 2.215 moles of sulfur dioxide are decomposed into its…

A:

Q: 7. How many molecules are there in 24.0 g of ethylene glycol, HO(CH)OH?

A: The number of moles is defined as the ratio of the mass of a substance to its molar mass. Number of…

Q: How many moles of hydrogen are in 3.06 × 10⁻³ g of glycine C₂H₅NO₂?

A: Introduction: Mole is the fundamental (SI) unit that is used to measure the amount of substance. By…

Q: 5) 0.7971 g of molecule, X, is found to contain 3.0 x 1022 atoms. Deduce the identity of X. Given N…

A: Given: Mass of X2 = 0.7971 g Atoms of X2 = 3.0×1022 NA = 6.023×1023 mol-1

Q: a sample of pure alumina hydrate was obtained from a bag of flame retardant. A 5.000g sample of the…

A: Given, Mass of sample = 5.000g. Final weight of sample after heating = 2.651g. The mass of water in…

Q: Calculate the mass CARBON in 0.0299 moles of C6H12O6.

A: A pure compound is that which contains its constituent atoms in fixed ratio by mass.C6H12O6  is a…

Q: 2. a) How is the mass of one mole of a substance determined? b) How do you determine the number of…

A: Answer of the question given below,

Q: Hydrogen peroxide breaks down, releasing oxygen, in the following reaction: 2H,0,(aq) – 2H,0(1) +…

A: 2H2O2 (aq) → 2H2O(l) + O2 (g) From this Balanced chemical equation we get that ; 2 mol H2O2 produce…

Q: 5. Oxides of sulfur are common air pollutants. If a compound is found to be 50% oxygen empirical and…

A: Calculation of empirical formula:

Q: 3. Calculate the percentage by mass of oxygen in the following compounds: (#3.25, p.157) a.…

A: formula for percentage by mass:

Q: Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 41.0% of the lighter…

A: Average mass of an element is defined as the atomic mass of the element calculated by multiplying…

Q: 3 5. A well-known reagent in analytical chemistry, dimethylglyoxime, has the empirical formula…

A:

Q: A chloride of silicon contains 79.1 mass % Cl. (a) What is theempirical formula of the chloride? (b)…

A: Empirical formula It gives the simplest whole number ratio of elements present in a compound. It is…

Q: For the reaction: N2 + H2= NH3. if you start with 45.901 grams of nitrogen, how nany grams of NH3 do…

A: Given :-  N2 + H2 → NH3  amount of N2 = 45.901 g  To be calculated :-  amount of NH3 formed (in…

Q: Bi₂S₃ + 3Fe → 2Bi + 3FeS If 5.76 ×10²³ atoms of iron (Fe) react with excess Bi₂S₃, what mass of Bi…

A:

Q: 2. How much (mass) carbon dioxide will be produced from the combustion of 40 grams of methane?. 3.…

A:

Q: 3. How many moles of chlorine atoms are there in 10.000 moles of sodium chlorate? How many grams of…

A: Note: Providing solution for question 3 as asked. Given, moles of sodium chlorate (NaClO3) = 10.000…

Q: bone Titanium metal is usefuu as a heplacement matenial. Delemine the mass in grams o625.5 moles 06…

A: The moles of a compound can be calculated as follows: Moles of compound=Mass of compoundMolar mass…

Q: There are 1.2 x 1024 atoms of carbon in a sample of aluminum acetate, Al(C,H;O2)3. How many moles of…

A:

Q: One of the hydrates of MnSO4 is manganese(II) sulfate dihydrate . A 69.7 gram sample of MnSO4  2…

A:

Q: 1. A prospector panning for gold in a river collects 15.00 g of pure gold. How many Au atoms are in…

A: According to mole concept, 1. 1 mole of a substance = molar mass of the substance.Eg- 1 mole ammonia…

Q: A sample of the male sex hormone testosterone, C19H28O2,contains 3.88 x 1021 hydrogen atoms. (a) How…

A: Atoms and molecules amount is calculated with the help of mole concept. A mole is defined as amount…

Q: a compund with the formula MNO3 contains 28.3% oxygen by mass. What is the identity of element M?

A: Mass percentage is defined as the ratio of mass of the substance ( here element) to the total mass…

Q: What is the empirical formula for C3H10N4O2 CHNO C4HSN20 O C3H10N402 O CAH10N202 O C2H2N2O2

A: the empirical formula is the formula in which the elements are combined in the simplest whole number…

Q: 11) What is the mass of 2.25 moles of the Zn(CIO3)2 molecule?

A: Number of moles = Mass / molar mass

Q: What is the empirical formula for C4H10O2? O C₂H5O O CH,O O C₂H4O O CHO2 O CHO

A: Given that, C4H10O2 Change into empirical formula ?

Q: 3.96/When 56.6 g of calcium and 30.5 g of nitrogen gas undergo a reaction that has a 93.0% yield,…

A: The reaction is as follows; 3Ca+N2------------>Ca3N2. The given mass of Ca=56.6 g The given mass…

Q: A certain metal hydroxide, M(OH)2, contains 32.8%% oxygen by mass. What is the identity of the metal…

A:

Q: One of the hydrates of CoSO4 is cobalt(II) sulfate hexahydrate . A 71.1 gram sample of CoSO4 6 H2O…

A: Answer

Q: What is the % by mass of Nitrogen (N) in (NH4)3PO3

A: Mass percentage tells about the mass percentage  of that element present in the given Compound. Or…

Q: Your doctor has diagnosed you as being anemic—that is, as having too little iron in your blood. At…

A: Answer:- This question is answered by using the simple concept of calculation number of atoms which…

Q: Ammonia (NH,) chemically reacts with oxygen gas (0,) to produce nitric oxide (NO) and water (H,O).…

A: Note: Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: One of the most widespread environmental carcinogens (cancer-causing agents) is benzo[a]pyrene…

A: Given, C present in 95.21% H present in 4.79%.  At first we need to find the empirical formula and…

Q: Given 500 kg/m3 H2SO4, what are the amounts of H2 and SO4?

A:

Q: Phosphorus burns in air to produce a phosphorus oxide (P4019) in the following reaction. If 0.489…

A:

Q: When 6.65 g of hydrate NiSO4•XH₂O was heated and the water was driven off and 3.67 g of anhydrous…

A:

Q: What mass of (NH4)2SO4 must be mixed with 45 kg of KNO3 to produce a fertilizer that has a 17.6 mass…

A: NH42SO4 is mixed with 45 kg of KNO3We have to find mass of NH42SO4 added to obtain the final mass…

Q: How many particles of glucose are present in 0.53 moles of C,H,2O6? (what kind of particles are…

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.