An oxide of nitrogen contains 63.1% oxygen and has a molar mass of 76.0 g/mol. A. What is the molecular formula for this compound?

Q: Mass of NaOH = SC Submit Part E Ascorbic acid, or vitamin C (C6H₂O6, molar mass= 176 g/mol), is a…

A: Given,  E) The moles of ascorbic acid ( C6H8O6 ) = 2.81 × 10-4 mol.  The mass of ascorbic acid is:…

Q: How many moles of oxygen are in 6.75 grams of oxygen?     A. 0.42 moles B. 1.60 moles C. 0.21 moles…

A: Given  values are, Mass of oxygen = 6.75 g We know molar mass of oxygen O2 = 31.998g/mol

Q: Na2CO3(aq) + CaCl2⋅2H2O → CaCO3(s) + 2NaCl(aq) + 2H2O(aq)  A. how many moles of CaCl2•2H2O are…

A: The reaction taking place is  Na2CO3(aq) + CaCl2⋅2H2O → CaCO3(s) + 2NaCl(aq) + 2H2O(aq)  A) Since…

Q: grams of Na+ (23 g/mol) are contained in 25 g of Na2S04 (142 g/mo

A: The question deals with the mole concept. Number of moles of a substance depends upon the amount of…

Q: Excedrin can be taken for extreme headaches, such as migraines. The molecular formula for Extra…

A: Calculation for molar mass of Excedrin: molar mass of C25H27N5O8=25(12.0 g/mol)+27(1.0 g/mol)+5(14.0…

Q: How many grams of NBr3 can be made from 525 g Br2  ?  N2   +   3 Br2   →   2 NBr3   +   44.0 kJ…

A: The reaction is as :-  N2 + 3Br2 ----> 2NBr3

Q: How many moles are in 1.88 x 1022 Al atoms? A.) 2.00 moles B.) 0.500 moles C.) 0.312 moles D.)…

A: The number of moles of a substance is given as the mass of the substance upon its molar mass.

Q: One mole of H2   A contains 6.0 x 1023 H atoms.   B contains 6.0 x 1023 H2 molecules.   C…

A:

Q: Morphine (molar mass = 285.37 g/mol) is a narcotic %3D painkiller. How many moles of morphine are…

A: We know that : moles = weight of substance/molecular weight of substance  Or, moles (n) = weight…

Q: What is the molar mass of Ba (SO4)? A. 233.3 grams/mole B.329.3 grams/mole C.185.3 grams/mole…

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

Q: A snowflake contains 1.9 X 10 ¹⁸ molecules of water. Home many moles of water does it contain?

A:

Q: FOLLOW-UP QUESTIONS (Show all your work) 1. A hydrated substance was found to have the following…

A:

Q: 20.  The number of moles in 112 g of acetylsalicylic acid (aspirin) C9H8O4 is    A. 1.61   B.…

A:

Q: How many moles of atoms are present in 154 g of HCl?   A) 4.22 mol B) 8.45 mol C) 0.0270 mol D) 2.00…

A: Given  Mass of HCl = 154 gram  Number of mole of atom = ?

Q: Nitric oxide is made from the oxidation of ammonia. What mass of nitric oxide can be made from the…

A: A mole of a substance weighs its molar mass  So Let The mass of substance be m and its molar mass be…

Q: The amino acid serine has the molecular formula C3H7NO3, and the amino acid lysine has the molecular…

A: Moles of serine = 57 mol

Q: MOLAR VIEW T03/S11 If a sample of (NH4)2HPO4 is found to contain 3.79 mol of NH4* ions how many…

A: The reaction can be written as follows: (NH4)2HPO4→2NH4++HPO42-

Q: 11.An unknown compound is comprised of 25.9% N and 74.1% O. The molecular mass of the compound is…

A: Answer

Q: Determine the formula for a compound with 25.24 % S, 74.76% F and a molecular weight of 254.112 g/…

A:

Q: Regular treatment with low-dose aspirin is used to help prevent cardiovascular disease. How many…

A:

Q: 1.) How many moles of Fe2O3 are in 185 g of the compound? number of moles:            mol  2.)…

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

Q: Which contains the greatest mass of oxygen?   0.75 mol of ethanol (2C H5 OH)   1.0 mol of water…

A: Which contains the greatest mass of oxygen?

Q: 0.5000 g sample containing NaCl (58.44 g/mol), BaCl2 (208.23 g/mol), and 11.56% by mass of…

A:

Q: When 145 g of MnCl₂ × nH₂O is heated, 92 g of the anhydrous compound is obtained. Find the number n…

A: Here n is number of moles of H2O, given that the mass of water = 92g

Q: Using the equation 2S2O3^2-(aq)+I2->S4O6^2-(aq)+2 I^-(aq), determine the number of moles of I^-…

A: From the balanced chemical equation  2S2O3^2-(aq)+I2->S4O6^2-(aq)+2 I^-(aq)

Q: Calculate the molar mass of a volatile liquid whose mass is 0.46 g. The mass is obtained after a…

A:

Q: Copper(I) iodide (CuI) is often added to table salt as a dietary source of iodine. How many moles of…

A: The mass of copper (I) iodide (CuI), mCuI, in 1.00 lb or 454 g of table salt is;…

Q: Question attached

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: How many moles of Fe(NO3)2 are present in 32.0 mL of 0.050 M Fe(NO3)2?

A: From formula of molarity , we can calculate no. Of moles of Fe(NO3)2.

Q: Combustion of 8.45 mg of an unknown substance yields 14.0 mg CO2 and 7.08 mg H20. The unknown…

A: We have to calculate the % of each element in substance.

Q: 5.) Ethylene glycol is a coolant widely used in automobiles. If its molecular formula is C2H6O2, how…

A: Number of moles is defined as the amount of the substance divided by the molecular weight of the…

Q: 8) Camphor is an organic compound extracted from the camphor laurel tree. Its strong aroma makes it…

A: It's a multiple part question.   Given information, Camphor is an organic compound that contains C,…

Q: many

A:

Q: In a beaker containing 20.0 g AgCl, 30.0 of NaCl, and 50.0 g of KCl. How much chlorine (in grams) is…

A: Given: Mass of AgCl is 20.0 g Mass of NaCl is 40.0 g Mass of KCl is 50.0 g To find: Mass of Cl in…

Q: For the chemical reaction, Fe2O3 + 3 SO3 à  Fe2(SO4)3, calculate the number of moles of SO3 you will…

A: Given :-  Fe2O3 + 3 SO3 →  Fe2(SO4)3  number of moles of Fe2O3 = 6.45 mol  To calculate :-  number…

Q: chemist will use a sample of 30 g of ethanol (CH3CH2OH) in an experiment. In one to two sentences,…

A:

Q: N2(g) + 3H2(g)--> 2NH3(g) how many grams of NH3 can be produced from 12.0g of H2 ?

A: The ratio of the molar mass of a substance to its given mass is called the number of moles of the…

Q: Washing soda (Na2CO3!xH2O), a compound used to prepare hard water for washing laundry is a hydrate.…

A: Some ionic compound (salt) contains a water molecule in their crystal lattice structure. The water…

Q: A particular oral contraceptive contains 0.0445 mg ethynyl estradiol in each pill. The formula of…

A:

Q: A solution is prepared by dissolving 21.1 g of NaI in enough water to make 444.5 mL of solution. How…

A: Interpretation- To determine the number of mole of ions in 18.6mL of solution when a solution is…

Q: What is the molecular mass (in AMU) and molar mass (in g mol-1) for chloroform (CHCI3) ?

A: The compound given is CHCl3.

Q: 2H2O(g) ----> 2H2 (g) + O2 (g) how many grams of O2 can be produced from 60.3 g H2O(g)

A: The given reaction is: Here, the water vapor (H2O) and oxygen (O2) are in 2:1 stoichiometric ratio…

Q: How many moles of H2O can be formed from 3.74 x 10^23 molecules of NH3 from 4 NH3(g)+5 O2(g)—> 4…

A:

Q: In one sentence explain what's wrong with this equation, and rewrite it so that the coefficients are…

A: Answer:- C3H6(g)   +  4.5 O2(g)   -------> 3CO2(g)   +    3H2O(g) In this equation the…

Q: What is the simplest formula for a compound that contains 0.50 mol Na, 0.50 mol S, and 0.75 mol O?…

A:

Q: How many atoms in 0.11  g CH4

A: Number of particles in a sample can be calculated by multiplying the number of moles by Avogadro's…

Q: Maple syrup is made from the sap of a maple tree. Whe the sap is tapped from the tree it is 4.0% by…

A: Here we are required to find the mass of sap that would be needed for making 1kg of syrup

Q: Calculate the formula mass for NaAl(SO4)2∙12H2O. Group of answer choices 362.214 g/mole 394.280…

A: Given that, NaAl(SO4)2∙12H2O Calculate the formula mass?

Q: NaPb+CH 3 CH 2 Cl (CH 3 CH 2 ) 4 Pb+NaCl+Pb What mass of NaPb is required to make 500kg of (CH 3 CH…

A: NaPb reacts with ethyl chloride to form tetraethyl lead. The equation for the balanced chemical…

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.