A 1.836 grams sample of coal contains 1.584 g of carbon.  What is the percent composition of carbon in coal?

Q: Glucose has the formula C6H12O6. What is the percent composition of oxygen in glucose to three…

A: The percent composition of oxygen in glucose is to be calculated.

Q: How it is useful and important the knowledge of mass percent and morality calculation in healthcare…

A: Mass percent is the measurement of an element in the molecule,compound or tablet in case of…

Q: An experiment requires that enough ethanol be used to yield 14.0 g of oxygen. How much ethanol must…

A: Theoretically, two moles of ethanol (C2H5OH) are required to produce one mole of oxygen gas from an…

Q: grams of sa

A:

Q: A sample of a compound analyzed in a chemistry labratory consists of 5.34 g of carbon, 0.42 g of…

A: Percentage composition or w/w  percent: it can be calculated  a given below:…

Q: Calculate the mass percent of chlorine in CCl6

A: Mass percent is a percentage of amount of an atom in the given molecule.  The mass percent of…

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

A: Since,   1 mole = 6.023×1023 molecules

Q: A mole of carbon has a mass of 12.01 g. and a mole of aluminum has a mass of 26.98 g. • Define what…

A: The mole is the standard unit of measurement for amount of substances. The mole is essentially a…

Q: Which sample contains the greatest number of atoms. A sample of N that contains 2.53×10 atoms or a…

A: Given,

Q: A grain of maize pollen has an average mass of 250 ng. How much would a mole of these pollen grains…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: How many number of particles are in 5.0 g of table sugar?

A: Given, The number of particles are in 5.0 g of table sugar is:

Q: mass in grams

A:

Q: Naturally occurring chlorine consists of 35Cl (mass 34.96885 amu) and 37Cl (mass 36.96590 amu), with…

A: Chlorine has two isotopes, Cl35 and Cl37.

Q: You have a sample that contain 5 moles of zinc. A)what is the mass of zinc in the sample?

A: moles of Zn= 5 mol mass of Zn=?

Q: A bottle of a tile cleanser contains 135 g of HCl and 775 g of water. What is the percent by mass of…

A: Generally the mass percent is determined by using following expression.

Q: For the molecular compound carbon tetrachloride, what would you multiply "molecules of CCl4" by to…

A: Given : Compound is carbon tetrachloride i.e CCl4. And number of molecules of CCl4 is given. To Find…

Q: 9) Na2CrO4 # of molecules: # of elements: Name of element: # of atom Total # of atoms:

A: Sodium chromate is the inorganic compound having chemical formula of Na₂CrO₄.

Q: What is the mass percent of chlorine in sodium chloride?

A: Mass of one mole of chlorine=35.43 Mass of one mol sodium chloride (NaCl)=58.44 g The mass…

Q: A) Suppose one molecule of Chlorophyll X contains 5 oxygen atoms. Chlorophyll X is 8.95% oxygen by…

A: Molecular mass of Chlorophyll X can be found out by using the mass percentage of Oxygen and number…

Q: What is the mass, in grams, of 557 copper atoms?

A: We have to calculate the mass, in grams, of 557 copper atoms.

Q: A 14.56 g sample of phosphorus reacts with 41.38 g of chlorine to form only phosphorus trichloride…

A:

Q: How many moles of tin atoms are in a pure tin cup with a mass of 31.7 g ? Express your answer in…

A: Molar mass of tin=118.71g/mol Given mass of tin=31.7g No. Of moles= given mass/molar mass…

Q: Estrogen (estriol) is a steroid that has the formula C18H2403. What is the mass of carbon in a 50.0…

A: Given:  Molecular formula of estrogen= C18H24O3  Mass of estrogen given= 50g

Q: What is the percent mass of carbon in H2C2O4?

A: Hydrocarbons are compounds made up of carbon and hydrogens. An organic acid is an organic compound…

Q: - Part A If Avogadro's number of pennies is divided equally among the 276 million men, women, and…

A: We know that, Avogadro's number of pennies = 6.022 x 1023 pennies. Convert these pennies into…

Q: t mass of

A:

Q: What mass of Al

A:

Q: The percent by mass of chlorine in C2 H5 Cl is %.

A: Percent by mass of Cl =( molecular weight of Cl/molecular weight of C2H5Cl) × 100%  Number of Cl…

Q: A 15.6 g sample of magnesium carbonate contains 3.2 g of magnesium. What is the percent Magnesium in…

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

Q: What mass of barium bromate, Ba

A:

Q: A sample of methane, CH4, has a mass of 58.25 g. Calculate the number of methane molecules in the…

A: Given mass of CH4 = 58.25 g Molar mass of CH4 = 16.04 g

Q: e mass of this piece of magnesium

A:

Q: A certain ore is 30.3% nickel by mass. How many kilograms of this ore would you need to dig up to…

A: Introduction: We have to calculate the mass of ore.

Q: sample of Ammonia gas ( NH3) has a mass of 76 grams. How many molecules are in the sample.?

A: Given mass of Ammonia is 76 grams  molar mass of NH3 = 17.031 number of moles= mass / molar mass =…

Q: Determine the mass of one mole of sodium chloride.

A: Answer - the basic formula is - In the given question, mole of NaCl given =1. So here, mass = molar…

Q: A 85.6 g sample of Fe3O4 reacts with 18.2 g of CO to form FeO and CO2. Fe3O4(s) + CO(g) ----->…

A: We have to find out the mass of FeO formed after burning of 85.6 gram of Fe3O4

Q: Suppose you are performing an experiment in which you produce a solid and measure its mass. You run…

A: Solution:- Given Data => Trial number Mass of product 1 2.59 g 2 2.26 g 3 1.91 g 4…

Q: A 3.53-gg sample of aluminum completely reacts with oxygen to form 6.67 gg of aluminum oxide. Use…

A:

Q: Q 7) If the mass of barium sulfate is 0.372 g, find the number of the moles.

A:

Q: 1.0 g of hydrogen reacts completely with 19.0 g of fluorine. What is thepercent by mass of hydrogen…

A: 1.0 g of hydrogen reacts completely with 19.0 g of fluorine -

Q: 1. What does the mole measure? a. mass of a substance b. volume of a substance c. density of a…

A:

Q: A 93.788 g sample of carbon dioxide contains how many total atoms

A:

Q: How many total atoms are in a sample of 10.0 grams of disilicon tetrachloride?

A:

Q: %. Calculate the mass of nitrogen requ

A:

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: How many carbon atoms are in a diamond (pure carbon) with a mass of 48 mg ?

A: 1 g = 1000 mg  So , 1mg = 10-3 g  Number of moles = mass/molar mass  Molar mass of C = 12.01 g/mol…

Q: You have a 136.28 g sample of Beryllium Fluoride what is the mass of a. Beryllium in the sample:

A: The mass of Beryllium Fluoride is = 136.28 g The mass of Beryllium in the sample is =?

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.