2 step problems/Mixed Practice due tomorrow!

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2 step problems/Mixed Practice due tomorrow! November 30, 2017 2 step problems/Mixed Practice due tomorrow! QUIZ 12/4 Review Due 12/4 Moles Test 12/5 Extra Credit: Bubble Gum! Warm up: Calculators NEEDED  Convert 4.5 grams of H2O to molecules of H2O Convert 3.6x1024 molecules of C6H12O6 to grams Convert 76.1 g NaCl to FUNs of NaCl Convert 9.4x1022 FUNs of MgO to moles. Convert 72 g of Nitric acid (HNO3) to moles

Why not atoms of water??????

Why are the following substances considered molecules? Molecules Atoms FUNs Ions Why are the following substances considered molecules? A) C2H6 b) P2O7 Because they have covalent bonds! How many atoms of each element are in the molecules? A) C-2, H-6 b) P-2, O-7

How many ions are in the following formula units? CuBr2 Cu: 1 Charge: +2 Br: 2 Charge: -1 K2S K: 2 Charge: +1 S: 1 Charge: -2 PbO Pb: 1 Charge: +2 O: 1 Charge: -2 Ca3(PO4)2 Ca: 3 Charge: +2 P: 2 O: 8 PO4 charge: -3

How many atoms of carbon are in 5 How many atoms of carbon are in 5.1 x 1023 particles of table sugar, C12H22O11? 5.1 x 1023 molecules C12H22O11 12 atoms C 1 molecule C12H22O11 = 6.12 x 1024 atoms of Carbon

A sample of aluminum oxide, Al2O3, contains 3. 2 x 1021 particles A sample of aluminum oxide, Al2O3, contains 3.2 x 1021 particles. How many ions of oxygen are in the sample? 3.2 x 1021 FUNs Al2O3 3 ions O 1 FUN Al2O3 = 9.6 x 1021 ions of Oxygen

How many ions of sulfur are in 1 How many ions of sulfur are in 1.1 x 1024 particles of sodium sulfate, Na2S? 1.1 x 1024 FUNs Na2S 1 ion S 1 FUN Na2S = 1.1 x 1024 ions of Sulfur Practice – you try!

3 Step problems THIS IS THE HARDEST TYPE OF PROBLEM!!! Mass Moles Molecules Atoms FUNS Ions 3 Step problems

How many atoms of oxygen are in 67.8 g of H2O? 1 mol H2O 67.8 g H2O 6.02 x 1023 molecules 1 O atom 18 g H2O 1 mol H2O 1 H2O molecule = 2.27 x 1024 atoms of Oxygen

A flask contains 32. 5 g of strontium chloride, SrCl2 A flask contains 32.5 g of strontium chloride, SrCl2. How many chlorine ions are in the flask? 32.5 g SrCl2 1 mol SrCl2 2 Cl ions 6.02 x 1023 FUNs 158 g SrCl2 1 mol SrCl2 1 SrCl2 FUN = 2.48 x 1023 ions of Chlorine

How many ions of sulfate, SO42-, are in 45 How many ions of sulfate, SO42-, are in 45.6 g of aluminum sulfate, Al2(SO4)3? Round your answer to 3 sig figs 45.6 g Al2(SO4)3 1 mol Al2(SO4)3 6.02 x 1023 FUNs 3 SO42- ions 1 Al2(SO4)3 FUN 342 g Al2(SO4)3 1 mol Al2(SO4)3 = 2.41 x 1023 ions of SO42- You try!

A sample of carbon tetrachloride, CCl4, contains 3 A sample of carbon tetrachloride, CCl4, contains 3.5 x 1024 atoms of chlorine. How many grams of CCl4 are in the sample? 3.5 x 1024 atoms Cl 1 FUN CCl4 152 g CCl4 1 mol CCl4 1 mol CCl4 4 atoms Cl 6.02 x 1023 FUNs = 220.9 g CCl4 You try!

A sample of nitrogen monoxide, NO, contains 2.6 x 1026 atoms of oxygen. How many moles of nitrogen monoxide are in your sample? 2.6 x 1026 atoms O 1 molecule NO 1 mol NO 1 atom O 6.02 x 1023 molecules NO = 431.9 mol NO You try!