The British chemist Joseph Priestley prepared oxygen in 1774 by heating mercury(II) oxide, HgO. Mercury metal is the other product. If 6.47 g of oxygen is collected, how many grams of mercury metal are also produced?

Q: Purple spheres represent iodine atoms, white spheres represent hydrogen atoms, and all of the…

A: Given:  Purple atom = Iodine (I) White atom = Hydrogen (H)

Q: When 6.00 g of sulfur are combined with 6.00 g of oxygen, 12.00 g of sulfur dioxide (SO2) are…

A: Molecular mass of sulfur = 32 g /mol, means 32 g in 1 mol.Molecular mass of O2 = 32 g / mol, means…

Q: A sample of mercury with a mass of 114.0 g was combined with 12.8 g of oxygen gas, and the resulting…

A: The reaction taking place is  2 Hg + O2 -----> 2 HgO Hence from the above reaction we can say…

Q: The U.S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: The number of lead atoms can be calculated as follows:

Q: 4. A sample of 2.12 g of copper was heated in an oxygen atmosphere until no further change took…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: How many moles are there in 2.75 x 10^24 atoms of copper?

A: we know that one mole of copper contain Avogadro's number of atoms Avogadro's number= 6.023 × 1023

Q: How many grams of copper that consists of 1.54 x 1024 atoms of copper?

A: To convert atoms to grams,  Step I  -  Convert atoms to moles                  1 mol  = 6.022 × 1023…

Q: How many atoms of Cu are existing in 2.36 g of copper wire?

A: Since molar mass of Cu = 63.546 g/mol Mass of Cu = 2.36 g (given)

Q: What is the mass of a single bromine molecule, Br 2?

A: The bromine molecule is composed of two bromine atoms that are covalently bonded to one another.

Q: 22 11. Find the mass in grams of 2.54 x 10 molecules of H,SO,.

A: Number of molecules of H2SO4 = 2.54 × 1022 molecules. Mass of H2SO4 (in grams ) = ?

Q: How much does 4.28 x 10 21 atoms of Nickel weigh?

A: We know that, one mole of any substance contains 6.022 × 1023 atoms. We can determine the weight by…

Q: The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride…

A: After the decomposition of sodium fluoride, the mass of fluorine produced is calculated by using the…

Q: If a sample of lithium contains 2.50x10* atoms of lithium-7 and 2.00×10 atoms of lithium-6, what is…

A: Given sample contains  Li-7=2.5×104 atomsLi-6=2×103 atoms

Q: In a combustion reaction, 46.0 g of ethanol reacts with 96.0 g of oxygen to produce water and carbon…

A:

Q: What is the mass, in grams, of 2.08 × 1024 aluminum (Al) atoms?

A: The question is based on mole concept. We have to determine mass of aluminium present.

Q: How many grams would 4.15 x 1021 atoms of Pb weigh?

A: Answer

Q: How many grams does 1.44 x 1028 carbon atoms weigh?

A: To calculate the mass in grams for the atoms  First we have to convert the number of Atoms into…

Q: 56.7 g of H,S reacts with 30.9 g of SO, according to this reaction + SO, 2H,S + So, = 35 + 2H,0 What…

A:

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm³. How many…

A:

Q: chemical formula

A:

Q: How many grams do 2.2 × 1024 atoms of magnesium

A: Solution - The molar mass of Mg =  24 g / mol therefore 1mol of Mg atoms weight =24 g Mass of 2.20 ×…

Q: Phosphorus burns in air to produce a phosphorus oxide in the following reaction: 4P(s) + 50,(g) –→…

A:

Q: What is the mass of aluminum if the same amount of electricity used to generate 500 g copper metal…

A: All the necessary calculations have been done in the following step.

Q: 28) 8.42 x 1027 atoms of tin 29) 6.39 x 1018 atoms of sulfur

A: Given  8.42 × 1027 atoms of tin  6.39 × 1018 atoms of sulfur  5.99 × 1030 molecules of SiO2

Q: In an experiment, the reaction of 100.0 g of iodine produced 144.9 g of a compound formed from…

A:

Q: How many grams of potassium permanganate contain 5.48 x 1020 atoms of oxygen?

A: Given: Number of atoms of oxygen in KMnO4 sample = 5.48 × 1020 atoms.

Q: How many grams of sulfur make up 3.01 mol of sulfur? [Use atomic mass: S, 32.06 amu]

A: The correct answer is given below

Q: Given that 4NH3 + 5024NO+ 6H2O, if1.92 X 10 molecules NH were made to react with an excess of oxygen…

A: Given,  4NH3 + 5O2 ➝ 4NO + 6H2O Number of molecules of NH3 react = 1.92 × 1021 molecules Excess…

Q: What mass of CdS is produced if 8.47 g cadmium reacts with 2.51 g of sulfur?

A:

Q: What is the total number of hydrogen atoms on the right-hand side of this chemical equation? 8…

A: Count number of H atom in right hand side ?

Q: 27. When iron(III) oxide reacts with hydrochloric acid, iron(III) chloride and water are formed.…

A: Balanced chemical equation:  Fe2O3  + 6 HCl ---> 2 FeCl3 + 3 H2O  Mass of Fe2O3 = 10.0 g Mass of…

Q: What is the mass of one atom of I? O 6.641 x 10-23 g O 4.745 x 10-22 g O 2.107 x 10 22 g O 3.443 x…

A: To determine the mass of 1 atom of I, do the following : 1) Determine molar mass of the substance.…

Q: 2. The volume of the nucleus of a carbon atom is about 9.9 x 10-39 mL. The molar mass of carbon…

A: Given: Volume of carbon nucleus atom = 9.9 × 10-39 mL. And molar mass of a carbon atom = 12.00…

Q: Part B Magnesium makes up 2.10 % by mass of the Earth's crust. How many grams of magnesium are…

A: Mass percent :-  The mass of a component in grams present in 100 grams mixture of all components is…

Q: 4. If 2.784 grams of silver oxide are decomposed to yield 2.592 grams of silver. a) How many grams…

A:

Q: 45.5 grams of a magnesium reacts with 243.2 grams of oxygen gas. At the end of reaction, 211.2 grams…

A: using mole concept from Balanced chemical equation easily determination of moles of products is…

Q: The mass ratio of sodium to chlorine is sodium chloride is 0.649:1.  A sample of sodium chloride…

A: 2NaCl ------> 2 Na + Cl2 Mass ratio of sodium to chlorine is sodium chloride is 0.649:1. Sample…

Q: Hydrogen sulfide is composed of two elements: hydrogen and sulfur. In an experiment, 6.500 g of…

A: a)The mass of sulfur obtained is calculated as shown below,

Q: O 2.4 g of carbon-1 O 1.2 g of carbon-1

A: Given The two moles of a substance:

Q: 3.97 x 10^24 molecules of NO has what mass

A:

Q: The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants…

Q: An aluminum-containing compound has the formula Mg, Al,0, and is 44.98% oxygen by mass. What is the…

A: Given: mass percent of O = 44.98 % Formula of compound: MgxAlyO4 molar mass of O = 16 g/mol molar…

Q: What is the mass occupied by 2.3 X 10 6Smolecules of Oxygen gas?

A: Number of molecules of oxygen = 2.3×1065 molecules

Q: How many moles are there in 2.87 x 10^24 atoms of gold?

A:

Q: What mass of iron(III) oxide must be used to produce 64.28 g of iron? What is the maximum mass of…

A: The equation required to produce iron from iron(III)oxide is as follows, Given grams of iron is…

Q: Based on the law of conservation of mass, if the total mass of reactants is 22 g, what will the…

A:

Q: Calculate the mass of antimony(III) lodide, Sblg, that can be produced by the reaction of 143 g of…

A:

Q: 1). (NH4);PO4 + Pb(NO3)a > Pb3(POa)a +. _NH,NO3 23.98 grams of lead (IV) nitrate are needed to…

A:

Q: Find the mass of 2.45 X 1023 molecules of Ca(OH)2? Use: Ca = 42.0g, H = 1.25g and O = 15.7g as…

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.