4 Al + 3 O2  -------->     2 Al2O3 Atomic weights for Al=26.98 g/mol, O=16.00 g/mol Molar Mass for Al2O3=101.96 g/mo   Starting with 12.5 grams of Al, how many moles of Al2O3 can be produced?

Q: question 4

A: Given information:Number of moles of CO(g) = 1.0 moleNumber of moles of CO2(g) = 1.0 mole

Q: A sample of ammonium phosphite, (NH4)3PO3, contains 0.162 mol of nitrogen atoms. The number of moles…

A: Given , ammonium phosphite  (NH4)3PO3

Q: 1no What is the maximum mass of Al,(SO,), which could be formed from the reaction of 3.6×1023 atoms…

A: According to the mole concept, 1 mole of an element contains 6.022 × 1023 number of atoms.…

Q: Fructose is a very sweet natural sugar that is present in honey, fruits, and fruit juices. It has a…

A: Given that, %C= 40% %H=6.7% %O=53.3% Molar mass of Fructose=180.1 g mol-1 Then,

Q: 3 FeS2   +  11 O2   →  Fe3O4   +  6 SO3 100 g of iron sulfide was reacted with excess oxygen,…

A: 3 FeS2   +  11 O2   →  Fe3O4   +  6 SO3 Atomic masses Fe=56; S=32, O=16 Molecular mass of…

Q: 15. A compound contains 1.90% H, 67.6% CI, 30.5%O? What is its empirical formula? O A. HCIO B. HCIO2…

A: “Since you have asked multiple question, we will solve the first question for you as per our…

Q: What is the percent by mass of carbon in ethylamine, C2H7N? Note the following atomic weights: H…

A:

Q: 70. What is the empirical formula of a compound containing 53% carbon and 47% oxygen by mass (in g)?…

A: Hence open d is correct that is C3O2

Q: What is the empirical formula of a compound that is 62.0% C, 10.4% H, and 27.5% O by mass? C6HO3…

A: Given, percentage of C = 62.0 % percentage of H = 10.4 % percentage of O = 27.5 % we are asked to…

Q: hich of the following is closest to having exactly one mole of oxygen atoms?   a) 42 g HNO3 b) 32…

A: a. 42 g HNO3 1 mole HNO3 contains = 3 moles of oxygen atoms moles of HNO3 = given mass/molar mass =…

Q: How many grams of NBR3 can be made from 2.22 x 10-2 moles of Br, ? N2 + 3 Br2 2 NB13 + 44.0 kJ The…

A:

Q: How many grams of oxygen is present in 5.764x 1022 molecul es of carbon monoxide? A. 0.15g В. 0.31g…

A:

Q: How many moles of carbon dioxide could be produced if 10 moles of octane, C 8H 18, are combined with…

A: To find the amount of product formed, first find the limiting reagent.

Q: One of the intermediates in the synthesis of glycine from ammonia, carbon dioxide, and methane is…

A:

Q: How many moles (of molecules or formula units) are in each sample? Express your answer in moles to…

A: Given A) 29.2 g NO2 B) 1.35 kg CO2 C) 45.9 g KNO3 D) 164.5 kg Na2SO4 moles (of molecules or formula…

Q: For the chemical reaction 2KI+Pb(NO3)2-->PbI2+2KNO3 what mass of lead (ii) is produced from 1.13…

A: Given: Moles of KI = 1.13 g Molar mass of PbI2 = 461.01 g/mol

Q: 6. A compound is composed of 28.03% Mg, 21.60% Si, 1.16% H, and 49.21% O. a) Working only with these…

A: Given, % H = 1.16  % O = 49.21  Si = 21.60 Mg = 28.03

Q: Silicon tetrachloride (SiCl4 ) can be prepared by heating Si in chlorine gas:  Si(s) + 2Cl2(g) ->…

A:

Q: In the reaction 2Na½CO3 sodium carbonate reacting. The amount in grams of Na are .... 4Na + 2CO2 +…

A:

Q: The mass of Cu(IO3)2 that can be formed from 0.6501 g of CuSO4 · 5H2O is _____ g. Molecular mass:…

A: Stoichiometry would be used to calculate mass .

Q: 2) For the following reaction N2 (g) + 3H (g) →2NH3 (g) The mass of NH, resulting from the reaction…

A: Given equation is : N2 (g) + 3H2 (g) ------> 2NH3 (g)  Given moles of H2 = 0.25 mole  Mass of NH3…

Q: AtomIs Molar mass Molels Element loaal 23 12.04X 10 29 c3546 63.5462 copper Gold 393.942 Ag Au…

A: From molar mass we can calculate the no of atom present in the molecules .

Q: B) Consider the reaction of: CH, + Br, → CH,Br + HBr What is the theoretical yield of CaH;Br if 42.1…

A: Given Chemical Reaction is -  C6H6 + Br2 --------> C6H5Br + HBr    The mass of Reactants are -…

Q: Which of these are correct/ true?  A. 1 mole of He has the same amount of atoms than 1 mole of Ca B.…

A: There are some correct statements where are written with explanatios.

Q: Number of atoms of C in 10 moles of CAH10 are: O 24.09x10^23 O 240.88x10^23 O 4.15x10^23 O…

A:

Q: The formula weight of potassium dichromate (K2Cr2O7) is __________ amu.

A: The molecular formula of the compound is K2Cr2O7

Q: The percent composition of aluminum (atomic weight 26.9815386) in Al2O3·2SiO2·2H2O (Molar mass is…

A: Given data :  Atomic weight of Aluminium= 26.9815386 g/mol  As the compound has two moles of Al , so…

Q: How many moles of HCl are in 30.6 g HCl? Express your answer in millimoles. (atomic weights: H=1.01;…

A: • Thus, 839 millimoles of HCl are in 30.6 g HCl in correct number of significant figures.

Q: carbon-hydrogen-nitrogen compound when burned completely, a 0.312 g sample yields 0.458 g CO2 and…

A:

Q: One of the intermediates in the synthesis of glycine from ammonia, carbon dioxide, and methane is…

A: The reaction in which the reactant is totally consumed when the reaction is completed is known as…

Q: How many grams of gold (Au; atomic mass = 197.0 g/mol) contains 2.5 x 1020 gold atoms?…

A: Number of gold atoms = 2.5 ×1020  Atomic mass of gold = 197 g/mol

Q: Putting it all together... molar muss 6.02 x 10 grams + moles rep. particles Ex 1) Convert 50.0 g of…

A:

Q: If you have 534 grams of AlC13 and an infinite amount of NAOH, how many grams of Nacl would be…

A: Given data: Grams of AlCl3=534 g. Chemical reaction: AlCl3 + 3 NaOH → Al(OH)3 + 3 NaCl. To…

Q: How many hydrogen atoms are in 1.0 G sample of acetic acid, CH3COOH? The molar mass of acetic acid…

A: Mass= 1gm Molar mass=60g/mol

Q: A sample of Al (2.8 g) reacts with a sample of Cl (4.15 g) according to equation below: 2Als) + 3C12…

A: Moles of aluminium in 2.8 g is, Number of moles=Given massmolar mass…

Q: A student was given the following question: How many atoms of Br are in 50 grams of CaBr2? They made…

A: Their set up is wrong the correct set up would be Because we will get 2  moles of Br atom from 1…

Q: What is the molecular formula of a compound if its molar mass is 183.2 g/mol and its empirical…

A:

Q: 3.9) A 3.87-mg sample of ascorbic acid (vitamin C) gives 5.80 mg COz and 1.58 mg H.O on combustion.…

A:

Q: Without doing any detailed calculations (but using a periodic table to give atomic weights), rank…

A: Each mole of any molecule contains Avogadro no of molecules i.e 6.023x10^23. It is true for every…

Q: ari File Edit View History Bookmarks Window Help Tue 11:3 www-awn.aleks.com alexs Yahoo Search…

A: One mole of methyl tert-butyl ether contains one mole Oxygen and 12 mole Hydrogen. Determine number…

Q: hat number of molecules (or formula units) are present in 1.69 g of each of the following compounds…

A: Find the number of moles of each and multiply each number of moles with avagadro number. Number of…

Q: What is the molar mass (g/mole) of cream of tartar (KHC4H4O6)?

A: The compound given is KHC4H4O6  Hence each molecule of KHC4H4O6 has  1) 1 Atom of K with atomic mass…

Q: 1. (a) 5.00g of caffeine is found to contain 2.47g of carbon, 0.26g of hydrogen, 1.44g of nitrogen…

A: Given: The mass of carbon=2.47 g. The mass of hydrogen=0.26 g. The mass of nitrogen=1.44 g. The mass…

Q: No. of moles (n) No. of atoms пxбx10 Mass Atomic Mass S. No Contents 1.1 Mass of paper Mass of paper…

A: Number of moles = mass ÷ molar mass  Number of atoms = moles × 6 × 1023

Q: O ion of krypton; O ion of potassium. 15. The number of moles of ions produced by the dissociation…

A: In dissociation reaction, there occurs a breakdown of a chemical species into its constituting ions…

Q: Bi2S3 +3Fe=2Bi+3FeS if 5.76x10^23 formula units of BiS, react with excess iron, what mass of FeS is…

A: Given: Reaction Bi2S3 +3Fe=2Bi+3FeS no of molecules of  Bi2S3  = 5.76x1023

Q: Silicon tetrachloride (SiC14 ) can be prepared by heating Si in chlorine gas: Si(s) + 2C12(g) ->…

A: The given reaction: Si (s) + 2Cl2 (g) --> SiCl4 (l) 1 mol  2 mol           1 mol Moles of SiCl4…

Q: Which of the following is equal to 1 mole of Ca atoms? * 6.022 x 10^22 molecules of Ca 6.022 x 10^23…

A: 1 mole of Ca atom is given  we have to convert it into atom because it’s not a molecule.

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".