3.59X 10 Unit Conversions: 1. Calculate the number of oxygen atoms in 19 grams of magnesium chlorate. 19g Ny Calosde 6.62210 molecurd I molmg (clegdz ndecf 2. What is the mąss in grams of 6.8x1018 molecules of ammonium? 18 X10"N Hy'molecule nodl Nity 18molNHy 6.0aax10 2.03X10N4 -4 uut ei ono dosodwlo ola3 Imcel tn vig bi 3. Which contains fewer molecules: 97 grams of O2 or 52 23 grams of Cl2? 23 Imolectel 6.00ax10 Answer= 0Ə 4. A sample of acetic acid has 4.22x1024 molecules. How many grams of hydrogen are present? heaxee Molecule Imol 6.00ax100mole 4.033, A = 28.26g H %3D CH3 cooH 5. In 43 grams of acetate, how many atoms of oxygen are present? 23 4,3856x10 atoms of oxyge moleule 1607ax10° Imor latom oxygen mal Imoe cck Rule of Seven: For Problems 6-15, give the name or formula. 9. BrO2

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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".