From balanced Equation given calculate the moles of a reactant faces mole of rea

Question

From balanced Equation given calculate the moles of a reactant faces mole of reactant or mole of a product. Hence you can calculate mass from the mole. Find atomic number and mass number pair from information given for subatomic particles. Recognize the correct formula of a polyatomic ion. Recognize correct valid or invalid electron configuration of from a set of Configuration. Recognize the correct Molar mass of a composed from masses given. You have to calculate with correct unit. Calculate density of a metal and find the correct density. Calculate molarity (M) from mass and mL given and circle the correct one. Remember the formula or equivalent of gas laws. Hence calculate P, V or T and n of 5 gas laws. Practice gas laws problems solved in the lecture class and see my supplement of Ch9 attached in black board Recognize Expansion work done by system on surrounding or Contraction work does by surrounding on a system from several reactions given. Calculate W = -PV from P and volumes given. Be careful of sign of W. Calculate kJ from q calculated form information given. Recognize Endothermic and Exothermic reaction. Write formulas of compounds given and write natives from formulas given. Both ionic compounds and covalent compounds. Balance Molecular Equations and write net ionic equations with phase label (eg., g, l, x) in all species. Rewrite Hess's law from equation given. Write Empirical formula from mass of elements given Solve Gas law problems with ideal gas Equation PV =nRt

Explanation / Answer

LEt us consider an equation

aA + bB --> cC + dD

as per stoichiometry, a moles of reactant A will react with b moles of reactant B to give c moles of product C and d moles of product D.

The number of atoms in each mole = 6.023 X 10^23

so number of atoms in a moles will be = a X 6.023 X 10^23

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