How many formula units of CaCO3 are contained in 350. g CaCO3?

Q: How many g of Al2(SO4)3 can you prepare from 2.5 g of H2SO4  ?

A: When H2SO4 react with Al(OH)3 it form Al2(SO4)3 and H22O as product.

Q: 8.* A4.00 gram sample of a hydrate of nickel(II) bromide loses 0.793 grams of water when heated.…

A: The question is based on the concept of experimental chemistry. we have to calculate the empirical…

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 molarity of each solution? a. 39 g of KCl dissolved in enough water to give 375 mL of…

A: * molarity = Moles / volume of solution in L   * Moles = Mass / molar mass   By using this relation…

Q: How many moles of lead are equivalent to 9.51 × 1 0 3 g of Pb?

A: Moles =given mass/ molar mass

Q: 1. Ag₂0, NaOH 2. H₂O H

A:

Q: What is the molarity of a solution that contains 3.0 g KNO3 in 0.625 L of solution?

A: The molarity of the solution is defined by the mole of solute present in one liter of solution. The…

Q: A compound contains, by mass, 81.7% carbon and 18.3% hydrogen. A 0.15 mole sample of this compound…

A: Given  % Carbon  = 81.7 %  % H   =  18.3 %  Number of mole     = 0.15 mole  Mass of compound = 6.6…

Q: If 1.00mol/l of nax contains 4.2% solute by mass, what is the atomic mass of x?

A: Given solution contains 1.00 mol of NaX in 1 L. Again (w/v)% of NaX is 4.2%. Here we have to…

Q: How many moles of NaOH are present in 31.5 mL of 0.240 M NaOH?

A:

Q: are the balanced chemical equations for the following? 1. BaCl2 & Na2CO3 2. CuSO4 & Pb(NO3)2 3.…

A: The chemical reactions follow the stoichiometry of the reactants and the products.For balancing a…

Q: How many moles of NaOH are present in 27.0 mL of 0.110 M NaOH?

A: Molarity is one of the concentration term which is used to define the concentration of a solute in a…

Q: what mass of cu(io3)2 can be formed from 0.400g of cuso4.5h2o

A: We can determine mass of Cu(IO3)2 formed by considering the balanced equation : CuSO4. 5H2O + 2 HIO3…

Q: 8. A 10.00 g sample of a compound that consists of carbon and hydrogen is found to consist of 7.99 g…

A:

Q: How many moles of ionic species are present in 1.0 L of a solution marked 1.0 M mercury(I) nitrate?

A:

Q: How many moles of CO2 are contained in a 10.5 g

A: A mole is a unit defined for the amount of substance. It is in the International System of Units…

Q: Determine the % composition of Vitamin E, C29H50O2?

A: Given : Molecular formula of Vitamin E is C29H50O2  To be determined :-  % composition of each…

Q: If 19.3 grams of an aqueous solution of ammonium nitrate, NH4NO3, contains 1.55 grams of ammonium…

A:

Q: How many grams of NH3 would be produced by the reaction of 12.0 g of H2?          N2(g)      +…

A: Nitrogen reacts with hydrogen to form ammonia. The equation for the balanced chemical reaction is…

Q: A 0.685g sample of NaHCO3 is decomposed by heating to form Na2CO3. When the sample is cooled it…

A: The division of any compound's actual/exact yield to its theoretical yield which further multiplied…

Q: What mass of solute is present in 1.08 L of 0.0578 M H2SO4?

A:

Q: In beverages, such as Gatorade, the quantity of FD&C Blue 1 is added in a bottle of 946 ml Is 0.100…

A: Given that -  The quantity of FD&C Blue 1 = 0.100 mg/L  Volume of bottle = 946 mL  Molar mass of…

Q: A 9.12 g of KCl.MgCl2.6H2O is to be dissolved to prepare a solution in sufficient water to give…

A: Mole is defined as the ratio of given mass and molar mass. The unit of mole is mol. It is utilized…

Q: How many moles are present in 100g of Mg(CN)2

A:

Q: 8. Concentrated phosphoric acid is 90% H3PO4 by mass and the remaining mass is water. The molarity…

A: Molarity specifies the solute moles per litre (L) solution. Its S.I unit is moles/litre (M).…

Q: . Calculate the number of moles in these quantities: (a) 25.0 g KNO3 (c) 5.4 x 102 g (NH4)2C2O4 (b)…

A: We have given that  1. Calculate the number of moles in these quantities: (a) 25.0 g KNO3 (c) 5.4 x…

Q: A flame test was carried out on solid sodium carbonate. The flame colour will be A Red O B Lilac C…

A: Sodium carbonate : NaHCO3

Q: A major component of honey is fructose (C6H12O6) with a molar mass of 180.16 g/mol. A tablespoon…

A:

Q: a) The molecular formula of allicin, the compound responsible for the characteristic smell of…

A: The molecule is especially considered as the smallest possible unit of any particular compound which…

Q: How many moles of NH3NH3 can be produced from 12.0 molmol of H2H2 and excess N2N2?

A: 1) Write the balanced chemical equation for the given chemical reaction. 2) Using the balanced…

Q: the mass percentage of NaCl in a solution containing 1.50 g of NaCl in H2O ?

A: Given: Mass of NaCl (solute) =1.50g Mass of water (solvent) =50.0g To find: The mass percentage of…

Q: You wish to prepare a solution that is 12% sodium chloride by mass How much sodium chloride is…

A: Given :-  % (w/w) of NaCl solution = 12 %  Mass of solution = 2.0 kg  To calculate :-  Mass of NaCl…

Q: Which of the following options contain the highest mass?

A: The formula for the calculation of mass from moles is  Number of moles = mass of the element /…

Q: How many moles of H2O can be formed from 3.74 x 10^23 molecules of NH3 from 4 NH3(g)+5 O2(g)—> 4…

A:

Q: What is the mass percent of ethanol (C2H5OH) if 495 moles of ethanol is added to 3 kg of water?

A:

Q: Crude acetanilide = 2.1 grams Pure acetanilide = 1.6 grams 1. What is the percentage yield? 2. What…

A: Given that -  Mass of Crude acetanilide = 2.1 grams  Mass of Pure acetanilide = 1.6 grams    Then,…

Q: Plain carbon steel might have a mass percentage of 0.3% carbon (C) by weight; the rest is iron (Fe).…

A: We have to predict the mole fraction of C in the steel.

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.