How many grams of Thallium Sulfate, Tl2SO4 would 1.0 g of Thallium Iodide give?

Q: A vitamin syrup for infants contains 27.44 mg of zinc sulfate monohydrate (ZnSO4.H2O) and 100.00 mg…

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Q: - Cucl(aq) H2S(g) How many moles of copper(l) sulfide could be produced from 12.6 moles of copper(I)…

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Q: How many moles of Na3AlO3 can be formed from 90.0 g of sodium hydroxide?

A: Given that , Weight of NaOH = 90 gram Molar mass of NaOH = 40 gram Now no. Of moles of NaOH = 90/40=…

Q: What is the mass in grams of 3.60 mol of lactic acid (C3H6O3), the compound responsible for the…

A: Given No of moles = 3.6 mol Molar mass of lactic acid = 90.08 g/mol  We know that, No of moles =…

Q: 19- by heating 2.86 g of hydrated sample of washing soda Na,CO3.XH20, till Complete drying the…

A: This reaction is all about the  conversion of hydrous salt into anhydrous salt by applying heat to…

Q: What is the empirical formula of the compound formed between W6+ and O2-?

A: Three O2- ions are needed to balance one ion of W6+ .

Q: Illustrate the Law of Conservation of Mass in the following reaction that will produce 20 kg of I2:…

A: The law of conservation of mass states that mass in an isolated system is neither created nor…

Q: What is the mass percentage of C in caffeine, C18H10N4O2

A: The mass percentage is calculated by the formula, mass%=mass of elementmass of compound×100

Q: Calculate the number of moles in 17.8 g of the antacid magnesium hydroxide, Mg(OH)2?

A: Given: Mass of magnesium hydroxide, Mg(OH)2= 17.8 g Molar mass of magnesium hydroxide, Mg(OH)2 =…

Q: How many molecules are in 6.50g of disilicon trioxide(Si2O3)?

A: Given that,6.50g of disilicon trioxide

Q: If ferric sulfide reacts with oxygen, how many moles of ferric sulfide is required to produce 6g of…

A: 4FeS +7 O2 = 2 Fe2O3+ 4 SO2

Q: What is the molar mass of K2CO3?

A: Molar mass of a compound is the sum of masses of all atoms present in that compound.

Q: How many ions can you get in solution from 123.1 grams of MoCl3?

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Q: The US environmental protection agency places limits on the quantities of toxic substances that may…

A: Given: Amount of hexavalent chromium= 0.50 mg/L. Mass of hexavalent chromium = 0.50 mg Volume of…

Q: What is Angas for the following equation? N2O4 (g) =2 NO2 (g) 2 O -1 O -2 O 3 O 1

A: ∆ngas = gas product moles - gas reactant moles. Product moles = 2, Reactant moles = 1. Therefore…

Q: How many grams of KClO3 are required to form 7.09 g of O2?

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Q: a) Magnesium Sulphate b) Sodium Chlorate c) Aluminum Nitrate

A: Ionic compounds: Ionic compound  Ionic compound composed of cation which is positively charged…

Q: What mass, in grams, of NO2 is needed to form 140.4 g of NO? Assume excess water.    3NO2(g) +…

A: The reaction given is  3 NO2(g) + H2O(l)  →  2 HNO3(aq) + NO(g) Given : mass of NO forming = 140.4 g…

Q: What is the mass in grams of 0.580 mol of lactic acid (C3H6O3), the compound responsible for the…

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Q: 4. Calculate the %O by mass in magnesium hydroxide, Mg(OH)2

A: The % of Mass can be calculated in relation to molar mass.

Q: What mass of O2 can theoretically be obtained from 1.67g of a KClO3/KCl mixture which is 75.0% by…

A: Given data,  Mass of 1.67 g of a KClO3/KCl mixture.  KClO3 present in mixture = 75 %

Q: How many moles of BeCl2 are needed to react completely with 1.75 moles of LiH?

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Q: How many moles of Fe304 are required to supply enough iron to prepare 0.650 mol Fe203? mol Fe304

A: Given: Moles of Fe2O3 = 0.650 mol.

Q: Which molecule has a larger molar mass? CH3OH or CO2

A: The molar mass (MM) of a compound is computed using the following expression: MM=∑niMi where ni and…

Q: White vinegar is essentially a mixture of 10% acetic acid (CH3COOH) and water 90% (by mass).…

A: Given,  Mass of the vinegar = 1.00 kg  Mass percentage of acetic acid = 10%  Mass percentage of…

Q: Perfluorooctanoic acid (PFOA, C8HF15O2) has been raising concerns due to its presence in the…

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Q: What is the mass percentage of Na in Na2SO3?

A: To calculate the mass percent of an element in a compound, we divide the mass of the element in 1…

Q: 4. How many moles of water are present in a 20.00 gram sample of lithium permanganate, LiMnO4-3H2O?

A: by using mole concept we easily determine the mole of element are present in reactent and products.

Q: Calculate the %O by mass in magnesium hydroxide, Mg(OH)2 .

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Q: Calculate mass (in grams) of sodium in 8.5 g of sodium-containing food additive. Na3PO4 (sodium…

A: To calculate the mass of sodium in 8.5 g of  Na3PO4 (sodium phosphate)

Q: . How many grams of NaCl are formed from 96 grams of AICI3?

A: Firstly calculate the no. of moles of aluminium chloride formed and then use the stoichiometric…

Q: Calculate the mass percent of H2O2

A: To solve this problem first we calculate the mass of Hydrogen peroxide .then mass Percent is…

Q: How many grams of NaCl is needed to produce 6.42g Na?

A: using mole concept easily determination of moles of products used and moles of products formed is…

Q: What mass of oxygen would be in a 124.56g sample of sodium thiosulfate Na2S2O3?

A: Given that:  Mass of Na2S2O3 = 124.56g  Molar mass of Na = 23g/mol Molar mass of S = 32g/mol Molar…

Q: What is the Molar Mass (g/mol) of acetic acid (CH3COOH) to the hundredths?

A: The mass of the sample of a compound to the amount of substance in the sample, in moles is known as…

Q: What is Angas for the following equation? 4 NH3 (g) + 3 O2 (g)=2 N2 (g) + 6 H,O (g) O 2 O 1 O 3 O -1…

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Q: • What mass of carbon dioxide is emitted by an automobile per 5.0 x 102 g pure octane used?

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Q: What do you mean by “aliquot” and “dilution”?

A: In inorganic chemistry, while titration these terms, i.e. aliquot and dilutions are generally used.…

Q: How many moles of lithium hydroxide would be required to produce 83.5 g of Li:COs in the following…

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Q: (a) Combustion analysis of toluene, a common organicsolvent, gives 5.86 mg of CO2 and 1.37 mg of…

A: Mass percent is given by the ratio of mass of the substance to that of the total mass.

Q: A metal sulfide M 2 S contains 14.3% of sulfur by massWhat is the identity of the metal in this…

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Q: What is the mass percent of hydrogen in the following compound? C4H8O4

A: C4H8O4 molecules contain 4 carbon, 8 Hydrogen and 4 oxygen atoms.   The mass of 1 mole of C4H8O4 is…

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: What mass of acetic acid is produced by the reaction of 1.8 g of oxygen gas?

A: Given :- mass of O2 = 1.8 g  To calculate :- mass of CH3COOH

Q: What mass of sodium hydroxide ,NaOH, would be required to produce 5.97 g of the antacid milk of…

A: Answer :- The balanced chemical equation is -                     2 x 40 g                 58 g…

Q: When the follow equation is balanced, what coefficient would fall before the formula "Pb(NO3)2"?…

A: When the following equation is balanced, what coefficient would fall before the formula Pb(NO3)2.…

Q: Determine the maximum mass of lithium nitride that could be formed from a reaction involving 5.00 g…

A: Lithium ⇒LiNitrogen ⇒N2Lithium Nitride ⇒Li3N

Q: What mass of O2 can theoretically be obtained from 1.67 g of a KClO3/KCl mixture which is 75.0% by…

A: Here in the given question the mixture of KClO3 and KCl is =1.67 gram. but mass of KClO3  is 75% of…

Q: ___NH4NO3 → ___N2O + ___H2O  if 10.0 g of ammonium nitrate is decomposed, what mass of laughing gas…

A: Answer:- firstly a balanced chemical equation is written then using the simple concept of…

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.