A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.092 g of hydrogen gas. What is the percent zinc in the original mixture?

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.042…

A: Mass of hydrogen gas produced = 1.042 g Molar Mass of hydrogen gas = 2.016 g/mol   moles of hydrogen…

Q: Iron ore is impure, Fe2O3. When Fe2O3 is heated with an excess of carbon (coke), metallic iron and…

A:

Q: Acetylene gas is 92.3% carbon and 7.7% hydrogen (by mass), and its miler mass is 26 g/mol. What is…

A: A numerical problem based on molecular formula determination, which is to be accomplished.

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.402…

A:

Q: C. If we desired to make 34.00g of Copper(1) Hydroxide, how many grams of Copper(11) Chloride would…

A: Given :-  Mass of  Copper(II) hydroxide, Cu(OH)2 = 34.00 g  Mass of  Copper(II) chloride, CuCl2 = ?…

Q: What is the percentage of calcium carbonate present in the original mixture?

A:

Q: Elemental sulfur occurs as octatomic molecules, S8. What mass (g) of fluorine gas is needed to react…

A: Given- Elemental sulfur occurs as octatomic molecules, S8. 17.8 g of sulfur to form sulfur…

Q: Solid zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas. If 3.750 grams…

A: Given that, mass of zinc, Zn = 3.750 g, molar mass = 65.38 g/mol Volume of HCl solution = 10.00 mL =…

Q: If after heating the reaction between magnesium and hydrochloric acid, the mass of the magnesium…

A: Given: The mass of the crucible = 34.2 g The mass of the magnesium chloride formed and crucible =…

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.372…

A: The number of moles of hydrogen (H2) gas, nH2, is; nH2=mH2MMH2=1.372 g2.016 g/mol=0.681 mol

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.442…

A:

Q: Hydrocarbon methane (CHa) during combustion produces carbon dioxide and water. On the other hand,…

A: Consider the combustion of methane as:                         CH4g+2O2g→CO2g+2H2OlMolar mass:…

Q: The percent by mass of copper(I) in Cu,CO3 is %.

A:

Q: mass of MnO,:

A:

Q: When 10.000g sample of metal oxide is heated, it releases 0.739 g Oxygen plus a certain mass of…

A: A question based on mole concept that is to be accomplished.

Q: A compound of copper was formed when 1.643 g of Cu was heated in oxygen. The mass of the compound…

A:

Q: When 56.39 g of phosphorus pentachloride reacts with excess water, what mass of hydrogen chloride…

A:

Q: A 4.560 g sample containing impure CuCl2x2H2O was heated to constant mass. The sample mass after…

A: Here, impure sample of CuCl2.2H2O heated to drive off all the water then the mass of the mixture is…

Q: Elemental phosphorus occurs as tetratomic molecules, P4. What mass of chlorine gas is needed to…

A: The reaction of P4 and Cl2 is

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.132…

A:

Q: A 4.67 g sample of a pure strontium halide reacts with excess sulfuric acid, and the solid strontium…

A: Given, A 4.67 g sample of a pure strontium halide reacts with excess sulfuric acid, and the solid…

Q: A 3.859 g sample containing impure CuCl2· 2 H20 was heated to constant mass. The sample mass after…

A: The impure sample of CuCl2.2H2O heating to drive off all the water then the mass of the mixture is…

Q: Elemental phosphorus occurs as tetratomic molecules, P₄.What mass of chlorine gas is needed to react…

A: Given data, The weight of the phosphorus is 455 g. Then, we have to calculate the mass of chlorine.…

Q: If 27.0g of iron nail was used to react with oxygen gas, calculate the mass of ferric oxide produced…

A: Stoichiometric equation is 4Fe(S)+3O2(9) → 2Fe2O3 (s)2Fe(S)+32 O2(9) →Fe2O3 (s)2 mol     32mol…

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.242…

A: The reactions occurring in the system are written below.

Q: 5 g of hydrated barium chloride is heated in a crucible until the mass of the sample no longer…

A: Given: Mass of hydrated barium chloride = 5 g Mass of sample after heating = 4.26 g The loss of mass…

Q: Iron ore is impure, Fe2O3. When Fe2O3 is heated with an excess of carbon (coke), metallic iron and…

A: Mass of sample=938 gMass of Iron obtained=523 gmass % of Fe2O3=?

Q: If the actual mass of a product formed in a reaction is 12.75 g less than the theoretically…

A: Given, Theoretical mass = 25.69 g Actual mass is 12.75 g less than the theoretical mass.

Q: What is the molecular mass of this gas?  =______ g/mol?

A: Volume = 530 cm3  Volume = 0.530 L Pressure = 145 kPa 1 kPa = 0.0099 atm 145 kPa =0.0099×145 atm…

Q: If 1.36 g of Iron is heated and placed in a bottle containing 0.0198 moles of oxygen gas, what mass…

A:

Q: If 67 grams of ammonium perchlorate were to react with 10 grams of aluminum: i. Which material would…

A:

Q: If 4.41 g of nitrogen react with 2.60 g of hydrogen to produce ammonia, what is the limiting…

A: Given that:  Nitrogen reacts with Hydrogen to give Ammonia The balanced chemical equation can be…

Q: A 12.21 g sample of a compound that contains sulfur is analyzed by precipitating all the sulfur as…

A: Given: The mass of the sample = 12.21 g The mass of BaSO4 = 11.227 g Standard data: The molar…

Q: What mass of aluminum is produced

A:

Q: Magnesium reacts with iron (III) chloride to form magnesium chloride and iron. A mixture of 43.5 g…

A: Given Mass of Mg = 43.5 g Mass of iron (III) chloride (FeCl3) = 173 g

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.102…

A: Given, mass of mixture = 20.00 g Hydrogen gas produced = 1.102 g

Q: If 5.3 g of hydrogen gas is reacted with 12.6 g of oxygen gas to produce water, which reactant is…

A: Given, mass of hydrogen = 5.3 g mass of oxygen = 12.6 g

Q: An impure sample of table salt (NaCl) that was dissolved in water and treated with silver nitrate to…

A: Mass of the impure sample = 1.741 g  Mass of AgCl formed = 4.084 g

Q: 2. If 0.0276 g of magnesium metal reacts with excess hydrochloric acid according to the equation…

A: Given, number of moles of magnesium metal for reaction =0.0276 moleswe are asked to calculate the…

Q: A sample of sandstone consists of only silica (SiO2) and calcite (CaCO3). When sandstone is heated,…

A: Given: Mass of sample = 18.7 mg. And mass of CO2 produced = 3.95 mg.

Q: Question is attached

A:

Q: If 68.0 g of sodium hydroxide and 44.0 g of carbon dioxide are allowed to react, which is the…

A: Mass of NaOH = 68.0g Mass of CO2 = 44.0g The reaction between NaOH and CO2 takes place. We have to…

Q: If you are provided with 10 molecules of hydrogen and 10 molecules of oxygen, which reactant is the…

A: The limiting reagent is a substance that is consumed totally when the chemical reaction is complete.…

Q: In the reaction involving 2.6 g of lead (II) nitrate and 4.6 g of potassium bromide, what is the…

A:

Q: Barium and phosphorus react with each other in a synthesis reaction. If 0.2856 g of phosphorus…

A:

Q: If 15.0 g of N2 and 12.5 g of H2 are reacted what mass of NH3 (theoretical yield) is produced?

A:

Q: Consider the reaction of solid aluminum iodide and potassium metal to form solid potassium iodide…

A: Given : Percent yield=91.0% Actual amount of aluminium=108.75 g To find : Mass in grams of aluminium…

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.