What is the mass in grams of 9.76E12 atoms of naturally occuring potassium?

Q: A compound contains 78.14% B and 21.86% H by mass and has a molar mass of 27.67 g/mol. What is the…

A: mass % of B = 78.14 %mass % of H = 21.86 % mass of hydrogen in 1 mole (27.67 g) of the compound = ?

Q: A compound with an empirical formula of C8H4NNaO4S is found to have a molar mass twice that of the…

A: Empirical formula :-  The formula which shows only relative number (simple ratio) of atoms of…

Q: How many atoms in 4.93  mol O2?

A: One molecule of O2 contains two oxygen atoms. According to the Avogadro concept, we know that one…

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…

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.