d) If 350.0 grams of Cr,O, are reacted with 235.0 grams of Si and 213.2 grams of Cr are recovered, what is the percent yield?

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: he theoretical yield of Ct

A:

Q: How many Cu atoms are present in 0.5 moles of copper?

A: Avogadro concept: According to the Avogadro concept, the number of atoms present in one mole is…

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

A:

Q: If you could drop 12 atoms of copper into a beaker containing nitric acid, how many molecules of NO…

A: Copper, Cu(s) when added to dilute nitric acid, HNO3(aq) produces nitric oxide gas, NO(g).

Q: 5.00 g of copper is reacted with 5.00 g of sulfur in a crucible and acompound composed of copper and…

A: The question is based on the concepts of reaction  Stoichiometry. we know the amount of product…

Q: How many grams of carbon tetrabromide contain 2.48 grams of Br ?

A: grams of carbon tetrabromide contain 2.48 grams of Br  will be found like this:

Q: when 47.8g of KClO3 is completely decomposed what is the theoretical yeild in grams of O2?

A: Given,Mass of KClO3 = 47.8 g Moles of KClO3 can be calculated as:

Q: If a sample of Fe2S3 contains 1.25x10^15 iron atoms what is the mass in grams ?

A:

Q: If you react 5.2 grams of magnesium metals with 2.3 grams of copper (II) bromide, how many total…

A: Given : Mass of magnesium i.e Mg taken = 5.2 g And mass of copper (II) bromide i.e CuBr2 taken = 2.3…

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: atter.) 115 g of methane is reacted with an equal mass of sulfur.

A: In balanced chemical reaction number of atoms of each element in product side is equal to number of…

Q: A student weighs an 18 g sample of Al and needs the same number of magnesium atoms as she has in the…

A:

Q: When 25.5 grams of C5H10 undergoes combustion with a 75.0 g sample of oxygen, how many grams of…

A:

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.092…

A: MZn + MMg = 20 g Mass of Zinc, MZn = X g Mass of magnesium, MMg = (20 – X)g Mass of Hydrogen gas =…

Q: An experiment requires that enough XeOF4 be used to yield 19.2 g of fluorine. How much XeOF4 must…

A:

Q: A compound contains 30.4 g of nitrogen and 69.6 g of oxygen by mass. What is the chemical formula of…

A: Given : mass of Nitrogen i.e N = 30.4 g And mass of Oxygen i.e O = 69.6 g

Q: The combustion of liquid propane (C3H8) yields gaseous carbon dioxide and water vapor.  If 2.48…

A:

Q: If the reaction between zinc chloride and sodium phosphat produces 25.7 g of product, then what is…

A:

Q: Stoichiometry is based on the law ofA. constant mole ratios.B. Avogadro’s constant.C. conservation…

A: Correct answer is (A) constant mole ratios. Stoichiometry is based on constant mole ratios in which…

Q: How many oxygen atoms are contained in a 5.525 g sample of calcium phosphate?

A: First of all, we will calculate the no. of moles of calcium phosphate in 5.525 g of sample and then…

Q: Flubberium (Symbol Fb) has a atomic mass of 50 grams, Vibranium (Symbol Vi) has an atomic mass of 25…

A:

Q: A mixture of 197.1 g of P and 203.6 g of O, reacts completely to form PO, and P010: Find the masses…

A: Mass of O2 = 203.6 g * moles of O2 = Mass of O2 / Molar mass of O2 = 203.6 g / 32 (g/mol) = 6.36…

Q: Na +  H2O --->  NaOH +  H2 A mass of 6.2 moles of sodium reacts with an excess of water.  What mass…

A:

Q: What is the percent by mass of carbon

A: Percent by mass = (mass of C/total mass of compound) × 100%

Q: f 37.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?…

A: On strong heating, water molecules get removed and turn hydrated salt into anhydrous salt.The…

Q: An 85.00 g sample of an unknown compound contains 24.26 g molybdenum, 24.33 g sulfur, and the rest…

A: Given,  Mass of the compound = 85.00 g  Mass of molybdenum = 24.26 g  Mass of sulfur = 24.33 g  Mass…

Q: A chemical reaction was used to produce 1.61 moles of copper (II) bicarbonate, Cu(HCO3)2. What mass…

A: Given data:

Q: Olivia is attempting to synthesize some potassium ferrioxalate and calculates that her theoretical…

A: percent yield is defined as  % yield = experimental yield X 100 / theoretical yield since…

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

A:

Q: Nyg) + 3Hz(g) → 2NH,g) How many grams of Ng are necessary to produce 7.77 g of NH,?

A: The number of moles of the substance is equal to the ratio of mass to the molar of the substance.…

Q: Given 92.45 g of CO2, what is the mass of the carbon?

A: Given 92.45 g of CO2, what is the mass of the carbon ?

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: The black powder used to propel each firework into the sky made up of 75% by mass potassium nitrate,…

A: Given, 75% by mass potassium nitrate15% by mass charcoal10% by mass sulphur65.0 grams of charcoal

Q: A sample of a compound containing only magnesium and oxygen is found to have 194g Mg and 256 g of O…

A: The percentage of Magnesium and oxygen are calculated as,

Q: Suppose 2.43 g of magnesium is reacted with 3.20 g of oxygen: 2Mg + O2 → 2MgO. How many grams of MgO…

A:

Q: The black powder used to propel each firework into the sky made up of 75% by mass potassium nitrate,…

A: Black powder contains 75% by mass potassium nitrate, 15% by mass charcoal, and 10% by mass sulfur.

Q: Starting with 1.550 g of potassium chlorate, a student releases 0.617 g of oxygen gas. If the…

A: Given: The mass of potassium chlorate taken = 1.550 g The mass of oxygen gas released = 0.617 g The…

Q: 4. If the manufacturer of Remdesivir has access to 1394 g of phosphorus atoms, how many grams of…

A: The chemical formula of Ramdesivir: C27H35N6O8P. The given mass of phosphorus atoms = 1394 g Atomic…

Q: The mass in grams of iodine in a sample of BaI 2 that contains 15.7 grams of barium is

A: The moles of Barium ion is calculated as follows,

Q: Analysis of a 12.04-g sample of a liquid compound composed of carbon, hydrogen, and nitrogen showed…

A: Mass percent of a compound is given by, Mass percent = Mass of the elementTotal Mass×100

Q: 1.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A:

Q: A 1.30 g sample of titanium chemically combines with chlorine gas to form 5.16 g of titanium…

A:

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: How many grams of BrBr are in 305 g CaBr2? mass:

A:

Q: Melissa is attempting to synthesize some potassium ferrioxalate and calculates that her theoretical…

A: Given that, Theoretical yield = 9.65 g Experimental yield = 7.89 g

Q: If you have 28.9g of Lithium Nitride reacting, how many grams of just Lithium are present?

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

Q: Chromium metal is obtained by heating chromium(111) oxide with carbon.Calculate the mass percentage…

A: By the help of stoichiometric coefficient we can find the amount of unknown substance by the help of…

Q: How many atoms of Lithium are in 1.00g?

A: The detailed calculation to calculate number of atoms of lithium in 1 gram of Li is provided in 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.