A 3.24-g sample of titanium reacts with oxygen to form 5.40 g of the metal oxide. What is the empirical formula ofthe metal oxide?

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: (a) What is the mass, in grams, of one mole of 12C? (b) Howmany carbon atoms are present in one mole…

A: (a) Molar mass of Carbon-12 is 12.01 g/mol. Hence, 12.01 g of pure carbon-12 is known as one mole of…

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

A:

Q: A 4.78-g sample of aluminum completely reacts withoxygen to form 6.67 g of aluminum oxide. Use this…

A: Mass percentage or percentage by weight is one of the concentration terms that indicates the mass of…

Q: What is the mass, in grams, of 1 mole of oxygen atoms?

A: Given :- number of moles of O = 1 mol  To calculate :- mass of 1 mol O atoms 1 mol contains 6.022 ×…

Q: A white oxide of tungsten is 79.2976% tungsten by mass. A blue tungsten oxide also contains…

A: Let the mass of the white tungsten oxide and the blue tungsten oxide be equal to 100 g. Mass of…

Q: A sample of hydrated aluminum sulfate wing 2.954 g was given to a student to be used in the water of…

A: Assuming the formula of hydrated aluminum sulfate is Al2(SO4)3 . yH2O where y = number of water…

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 sample of pure carbon disulfide has a mass of 45.05 g. How many molecules of carbon disulfide…

A: Number of mols = weight / molecular weight  Number of molecules  = number of mols × 6.023 × 1023

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

A:

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: Find the empirical formula of a compound, given that the compound is found to be 47.9% zinc and…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: A sample of ammonium phosphate, (NH4)3PO4,contains 0.104 mol of nitrogen atoms. What's the number of…

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

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: A 10.724-g sample of an oxide of titanium was found to contain 7.143 g titanium, and the rest,…

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: Calculate the mass % of O in calcium periodate

A: The molecular formula of calcium periodate is Ca(IO4)2.  We know the molar mass of calcium…

Q: A 13.0-g sample of titanium reacts with oxygen to form 21.6 g of metal oxide. What is the empirical…

A: Given that  Mass of Titanium reacted = 13.0 g  Mass of metal oxide formed = 21.6 g  Empirical…

Q: Eight moles of hydrogen sulfide, H2S, would consist of how many molecules?

A: Number of moles can be converted into number of molecules by multiplying it with the Avogadro's…

Q: A 1.628-g sample of a hydrate of magnesium iodide isheated until its mass is reduced to 1.072 g and…

A: Given data mass of sample  = 1.628  g mass of sample after heating = 1.072 g…

Q: what is the average mass of a single sulfur atom in grams?

A: Number of moles of sulfur can be calculated by dividing number of atoms by Avogadro's constant.

Q: Four moles of sulfur dioxide, SO2, would consist of how many molecules?

A: The number of molecules of a substance present in one mole is known as its Avogadro number, its…

Q: A 21.8 g sample of water contains how many water molecules?

A:

Q: What is the average mass of a single silicon atom in grams?

A:

Q: Calculate the mass of 500. atoms of iron (Fe).

A:

Q: Consider a sample of aluminum nitrate that contains 1.72 × 10²⁴ atoms of nitrogen. What is the mass…

A:

Q: What is the mass in grams of one manganese atom?

A: The mass of one manganese atom is 54.938044 u, where u stands for atomic mass unit.

Q: A 41.8mg sample of carbon reacts with sulfur to form 116mg of the compound carbon sulfide. What is…

A: Mass of carbon used = 41.8 mg = 0.0418 g Molar mass of carbon = 12 g No. of moles of carbon used =…

Q: A compound that contains only copper and chlorine contains 2.363 g copper and 2.637 g chlorine. What…

A:

Q: A sample of barium reacts completely with oxygen in a specialized crucible. The reaction that occurs…

A: Answer:- This question is answered by using the simple concept of determination of empirical formula…

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

A:

Q: Four moles of sulfur dioxide, SO2, would consists of how many molecules?

A: Given: No of moles of SO2 = 4 moles   To find: No of molecules in 4 mol of SO2 , n= ??

Q: A sample of a compound containing only carbon, hydrogen, and oxygen is found in analyzed to contain…

A: The simplest positive integer ratio of atoms present in a compound is represents the empirical…

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: in the laboratory, a student weighs out 0.0852 g of cobalt on balance. how many atoms of cobalt are…

A: We have 0.0852 g of Co , we have to calculate the atoms of cobalt in the sample.

Q: A 78.0-g sample of an unknown compound contains 12.4 g ofhydrogen. What is the percent by mass of…

A: Given: Weight of the compound = 78 g Weight of hydrogen = 12.4 g The calculation of the % by mass is…

Q: calculate the mass of 600. atoms of nitrogen

A: The molar mass of any substance is the mass of 1 mole of that substance. The unit of molar mass is…

Q: An analysis shows that 5.90 g of a chromium metal combines with oxygen to form 8.62 g of chromium…

A:

Q: 2. When a 30.98-g sample of phosphorus reacts with oxygen, a 71.00-g sample of phosphorus oxide is…

A: Given: The mass of P=30.98 g Mass of compound, (Phosphorous oxide)=71 g. Mass of oxygen=(71-30.98)…

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

A:

Q: A 15.267 g sample of a sulfide gold was found to contain 12.272 g gold, and  the remainder, sulfur.…

A: The molar mass for gold is 196.967 g/mol and the molar mass for sulfur is 32.065 g/mol. The mass of…

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 the insecticide calcium chlorate must be measured if a sample is to contain 5.79 g…

A: Formula of calcium chlorate = ca(clo3)2 Molecular mass of calcium chlorate is 207g

Q: A sample of hydrogen sulfide, H2S, has a mass of 30.50 g. Calculate the number of hydrogen sulfide…

A:

Q: If 250 g of calcium chlorate decomposes into calcium chloride and oxygen, what mass of oxygen would…

A: Chemical reactions are those reactions which undergo any chemical change. Chemical reaction is…

Q: Five moles of sulfur dioxide, SO2, would consist of how many molecules?

A: Given, 5 moles of SO2 1 mol of a compound contains  number of molecules.

Q: 7. A compound contains 30.4 g of nitrogen and 69.6 g of oxygen by mass. What is the chemical formula…

A:

Q: Calculate the mass of 500 atoms of iron (Fe).

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

Q: Calculate the mass of 400. atoms of sulfur (S)

A: Given: Number of atoms of S = 400 atoms.

Q: b) What is the molecular formula given that its mass is 121 g. ( to

A: Given;

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.