A sample of sodium sulfite (N a 2 S O 3 ) has a mass of 2.25 g.a. How many N a + ions are present?b. How many S O 3 2- ions are present?c. What is the mass in grams of one formula unit of N a 2 S O 3 ?

Q: Folic Acid (C19 H19 N7 O6), also known as vitamin B9 is used to treat anemia caused by folic acid…

A: a) The number of moles of Vitamin B9 can be calculated as given below. Therefore, the number of…

Q: A 7.591-g gaseous mixture contains methane (CH₄) and butane (C₄H₁₀). Complete combustion to form…

A: Step-1CH416g + 2O2 → CO2 + 2H2OC4H1058g + 132 O2 → 4CO2 + 5H2O

Q: A 0.370-mol sample of a metal oxide (M₂O₃) weighs 55.4 g.(a) How many moles of O are in the…

A: Mass of 0.37 mole of metal oxide = 55.4 g. Mass of one mole of metal oxide = Molar mass of the metal…

Q: How many grams of Cl, are needed to form 82.4 g of AlCl, ? 2 Al(s) + 3 Cl, (g) 2 AICI, (s)

A: two moles of Al reacts with  3moles of chlorine gas forms 2 moles of AlCl3 Calculation of no of…

Q: (f) number of O atoms in 6.25 x 10-3 mol Al(NO3)3

A: Total number of oxygen atom = 3.39×1022 atoms

Q: 1. identify 4 different chemical compounds. A.) calculate the mole mass of each chemical compound.…

A:

Q: A) What is the formula of magnesium melonite dihydrate?  B) What is the mass % of melon in copper…

A:

Q: A. Molar mass of an Element = Atomic mass of the Element Molar mass of a Compound = Molecular mass…

A: Given: Molar mass of C = 12.01 g/mol Molar mass of O = 16.00 g/mol Molar mass of Pt = 195.08 g/mol…

Q: Consider the balanced reaction of magnesium and oxygen.   2Mg+O2⟶2MgO2Mg+O2⟶2MgO What mass, in…

A: Given, mass of O2 = 2.81 g Mass of Mg = 1.51 g Molar mass of MgO = 40.3 g/mol Molar mass of Mg =…

Q: Magnesium hydroxide (Mg(OH) 2), as "Milk of Magnesia" can be used to neutralize excess stomach acid,…

A:

Q: 4 C3H;N3OS(1) → 12 CO2(g) + 6 N2(g) + O2(g) + 10 H20(g) a. How many oxygen atoms are present in a…

A: Number of moles = mass/molar mass  Mass = moles × molar mass  Density = mass/volume  Mass = density…

Q: 5. 2Cr(NO;); (ag) + 3 Ba (s) → 3Ba(NO;)2(ag) +2Cr(s) Complete Ionic: 2C13+(ag) + 6NO3-(ag) + 3Ba(s)…

A: The reaction taking place is given as, => 2 Cr(NO3)3 (aq) + 3 Ba (s) -------> 3 Ba(NO3)2 (aq)…

Q: 70. What is the empirical formula of a compound containing 53% carbon and 47% oxygen by mass (in g)?…

A: Hence open d is correct that is C3O2

Q: A sample of an oxide of lead (oxide A) weighing 4.7840 g is heated to drive off oxygen to form oxide…

A: Empirical formula of oxide A = PbO 2   Empirical formula of oxide B = Pb 3 O 4   Empirical formula…

Q: 1.) Iron (II) sulfate, FeSO4, is prescribed for the treatment of anemia. a.) How many moles of…

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

Q: 32. How many grams of Li;N can be formed from 1.75 moles of Li? Assume an excess of nitrogen. 6…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: A 0.370-mol sample of a metal oxide (M2O3) weighs 55.4 g. (a) How many moles of O are in the sample?…

A: A 0.370-mol sample of a metal oxide (M2O3) weighs 55.4 g. (a) How many moles of O are in the sample?…

Q: 3. Lithium has two stable isotopes with masses of 6.01512 u and 7.01600 u. The average molar mass of…

A: Answer is explained below.

Q: What is the percentage of C in Sodium carbonate (Na2CO3)? Atomic Masses: Na = 22.99 amu; C= 12.01…

A: To Solve this problem we will calculate the mass of C in sodium carbonate .

Q: 4. One mole is equivalent to a. 3.75 g Hydrogen c. 16 g Oxygen b. 14 g Carbon d. 190 g Gold 5. What…

A: 4) Calculate the number of moles of each option-

Q: chemist needs to produce 100 grams of gallium chloride, when gallium reacts with hydrochloric acid…

A:

Q: 8.55 moles of PbO are formed by this reaction how many moles of SO2 will be formed? Pertaining to…

A: Mole is a unit to represent the quantity of fundamental particle like proton neutron and electron.

Q: Consider the balanced reaction of magnesium and oxygen.   2Mg+O2⟶2MgO2Mg+O2⟶2MgO What mass, in…

A: Number of moles of Mg and O2 are calculated as follows: No. of moles of Mg=massmolar mass=1.41…

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: Determine the mass of lithium hydroxide produced when 0.83 g lithium nitride reacts with water,…

A: The mass of lithium hydroxide can be calculated as follows

Q: 4. A 22.4 g sample of oxygen gas is placed in a sealed container with 2.50 g of hydrogen gas. The…

A:

Q: 1. a) Calculate the molar mass of each of the following: (i) N,O, (ii) C,H,OH (iii) MgSO,.7H,O (iv)…

A: Molar mass is determined by the addition of atomic masses of each atom present in a molecule.

Q: a. Calculate the molar mass of P205. Molar masS = g/mol %3D b. Calculate the molar mass of Caz…

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Q: 1. H₂S (g) + CH4 (g) 2. NO₂ (g) 3. Pb3O4 (s) 4. C(s) + CO₂(g) 5. NO (g) Chemical Reaction Fe3O4 (s)…

A: A system in its equilibrium state will remain in that state indefinitely as long as it is…

Q: Ca(s) + 2HCI(ag)--> CaClalaq) + H2(g) What is the mass of CaCl, that can be produced from 0.621 g of…

A:

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

A: The balanced reaction taking place is given as 3 NaHCO3 (aq) + C6H8O7 (aq) -------> 3 CO2 (g) + 3…

Q: 4Bi + 30, → 2Bi,O3 Build your Model: Element Color Key # of Atoms # of Atoms (Reactants) (Products)

A: Given equation: 4 Bi + 3O2 --> 2 Bi2O3  Total atoms of Bi in equation : 8 Total atoms of Oxygen…

Q: MgCl₂(aq) + Na₃PO₄(aq) → Mg₃(PO₄)₂(s) + NaCl(aq) calculate the moles of MgCl₂ that will be required…

A:

Q: Consider the following chemical reaction: 3Mg + B₂03 → 2B + 3 MgO. What mass in grams of magnesium…

A:

Q: How many atoms are there in 75 molecules of acetic acid, CH3CO2H? A compound contains, by mass,…

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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: 2: Find the number of K* ions in 3.41 mol of K,HPO4? 3: Find the amount of the indicated element (in…

A: 1 mole of any compound has 6.023*1023 molecules or atoms. Moles = given mass of compound/molar mass…

Q: 4. chlorine dioxide a. CIO b. Cl2O c. CIO2 d. Cl202 5. dinitrogen trioxide c. NO d. NO3 a. N3O2 b.…

A:

Q: Aspartame is an artificial sweetener that is 160 times sweeter than sucrose (table sugar) when…

A: Hi, since there are multiple questions posted we will provide you with answers for the first two…

Q: 1. identify 4 different chemical compounds . A.) calculate the mole mass of each chemical compound…

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Q: 4.0 x 104 mol CH3NH2 contains how many moles of hydrogen? CH3NH2 (g) +   O2 (g) →   CO2 (g) +…

A: CH3NH2  + O2 --------------->  CO2   + H2O  + N2

Q: 1.) Calculate the moles of KHP in flask #1. grams KHP Molar Mass of KHP (A1) 204.22 g/mol moles KHP…

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Q: (a) What is the difference between adding subscript 2 to the end of the formula for CO to give CO2…

A: A question based on general chemistry, which is to be accomplished.

Q: 4 S(s) +6 O2(g)→ 4 SO3(g) AH°xn = ? %3D Given: SO2(g) → S(s) + O2(g) ΔΗ rxn +296.8 kJ AH°ryn =…

A:

Q: Elements B and N form a binary compound BxNy. When 12 grams of this compound was made from its…

A: Empirical formula of a compound is the simplest positive integer ration of atoms present in the…

Q: Iodine is prepared both in the laboratory and commercially by adding CI, (g) to an aqueous solution…

A:

Q: ? + {H → 15 ← Oci 8 GT 8 15N+?

A:

Q: 8.25 Cisplatin (right), or Platinol, is used in the treatment of certain cancers. CI- N- Calculate…

A: The molecular formula of  cisplatin or Platinol is [Pt(NH3)2Cl2]

Q: Assuming the reaction goes to completion, how many moles of strontium fluoride should we expect to…

A: Given: Sr(NO3)2 + 2NaF → 2NaNO3 + SrF2 Concentration of: Sr(NO3)2 = 3.016M NaF = 3.644 M Volume of…

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

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.