A 0.370-mol sample of a metal oxide (M2O3) weighs 55.4 g. (a) How many moles of O are in the sample? (b) How many grams of M are in the sample? (c) What element is represented by the symbol M?

Q: A student heated a 3.32-g sample of a hydrate and recovered 2.02 g of an anhydrous compound. (b)…

A: Given : Mass of anhydrous MgC2O4 recovered = 2.02 g

Q: (a) Calculate the molar mass of ammonium nitrate, NH4NO3. (b) What is the mass percent of nitrogen…

A: (a) Molar mass of a molecule = sum of atomic masses of all the constituent elements      Molar mass…

Q: 6. This question refers to the compound aluminum sulfate octadecahydrate, Al2(SO4)3-18H₂O. Report…

A: Note: As per our guidelines, we are supposed to answer only three subparts when multiple subparts…

Q: If the statement is true, write TRUE. If the statement is false, change the underlined word(s).…

A:

Q: In a lab experiment, 8.21 g of phosphorus reacts with bromine to form 71.75 g of phosphorus…

A: According to the law of conservation of mass, the sum of mass of reactants and the sum of mass of…

Q: Glycine, an amino acid used by organisms to make proteins,is represented by the following molecular…

A: Glycine is the simplest amino acid present. It is made up of an amine group and one carboxylic group…

Q: (a) What is the chemical formula of eugenol, the main contri butor to the aroma of cloves? (b)…

A: a) We have to find chemical formula of eugenol, the main contributor to the aroma of cloves.…

Q: (a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper…

A: (a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper…

Q: A sample of glucose, C6H12O6, contains 1.250 x1021 carbonatoms. (a) How many atoms of hydrogen does…

A: a).

Q: A sample of 0.600 mol of a metal M reacts completely with excess fluorine to form 46.8 g of MF2.(a)…

A: 1 mole of M is present in 1 mole of MF2 and 2 mole of F in 1 mole of MF2. The moles of M is 0.600.

Q: Calculate the number of molecules present in each of the following samples.(a) 0.800 mol acetylene,…

A:

Q: 3.) Tetraphosphorus decaoxide reacts with water to form phosphoric acid, a major industrial acid. In…

A:

Q: 3: Find the amount of the indicated element (in moles) in: (a) 8.75 g of B,O3. (b) 167.2 mg of…

A: One mole of any compound = it's molecular weight . From here we can calculate the moles. Of that…

Q: Allyl sulfide gives garlic its characteristic odor.Calculate (a) the mass in grams of 2.63 mol of…

A: NOTE : The correct name of the compound should be dially sulfide. The compound given is allyl…

Q: (b) A compound is composed of elements C, H, and N. A 8.400-mg sample of the unknown compound was…

A:

Q: Calculate the following: (a) mass in 1.73 mol of CaH 2 (b) moles of mg (NO3) 2 in 3.25 g of…

A:

Q: For the element aluminum, Al: (a) Calculate the number of moles in 7.54 g. (b) Calculate the number…

A: Data given: (a) The mass of aluminium = 7.54 g (b) The number of moles of aluminium = 0.154 mol (c)…

Q: Benzene has the molecular formula CcH. A sample of benzene has a mass of 43.95 g. (a) Calculate the…

A:

Q: The sample is analyzed and found to contain three elements, C, H and O.  A 2.147 g sample of the…

A: The given data: The mass of the sample = 2.147 g The mass of the CO2 (g) = 4.297 g The mass of H2O…

Q: 3) An organic compound contains only C, H, and O. Complete combustion of a 3.185 g sample in an…

A:

Q: (d)Using the formula Mn(ClO₄)₄ (MM = 452.74), what is the percent by mass of Cl in the compound?…

A: Number of moles = mass / molar mass  % by mass =( mass of Cl atoms in Mn(ClO4)4 / mass of 1 mol of…

Q: A sample of glucose, C6H12O6, contains 1.250 * 1021 carbonatoms. (a) How many atoms of hydrogen does…

A: 1 molecule of glucose contains 6 atoms of C, 12 atoms of H and 6 atoms of O.  Molar mass of glucose…

Q: 7. A compound contains 32.45 % C, 2.72 % H, and 64.83 % O. (a) What is its empirical formula?…

A:

Q: (1) How many moles of oxygen atoms are there in one mole of ozone molecules (O3)? (a) 6.022 x 10 23…

A: number of moles of ozone is 1 mole

Q: A certain compound contains carbon, hydrogen and chlorine only. Complete combustion of 0.425 g of…

A:

Q: Mescaline is a hallucinogen in peyote, a cactus native to the southwestern United States and Mexico.…

A: There are certain plants in nature from which drugs are obtained. These drugs are hallucinogenic in…

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.