Stoichiometry and Avogadro

Avogadro's Number = ?

• Mol

• 
• 6.02 x 10^23 = 1 mol

• 6.02 x 10^22 = 1 mol

Abbreviation for moles

• Mole(s)

• Molecule

• Moo

• Mol

How many grams are in Fluorine (F), if their are 17 moles?

• 17 g of Fluorine

• 3230 g of Fluorine

• 323.0 g of Fluorine

• 32.3 g of Fluorine

Tags

NGSS.HS-PS1-7

Your toothpaste probably contains around 62.00g of fluorine per tube. How many moles are in one tube of toothpaste?

• 6.20 mol/ one tube of toothpaste

• 3.263 mol/1 tube of toothpaste

• 62.00 mol/ one tube of toothpaste

• 3.23 mol/1 tube of toothpaste

Tags

NGSS.HS-PS1-7

If 2.57 g of CaC2 was used, how many formula units was in that mass?

• 64.1 g/mol of CaCl2

• 2.41 * 10^22 g/mol of CaCl2

• 64.10 g/mol of CaCl2

• 2.09 * 10^22g/mol of CaCl2

Tags

NGSS.HS-PS1-7

If I used 3.11 g how many moles of CaC2?

• 31.8 mol/CaC2

• 4.85 x 10-2 mol/CaC2

• 4.85 x 10-1 mol/CaC2

• 4.85 x 10-8 mol/CaC2

Tags

NGSS.HS-PS1-7

Balance the equation, CaC2(s) + H2O (l) →C2H2(g) + Ca(OH)2(aq)

• 1.1.1.2

• 1.4.3.2

• 1.1.1.1

• 1.2.1.1

Balance the equation, C2H2(g) + O2(g) →CO2(g) + H2O(l)

• 2.5.4.2

• 2.2.2.2

• 1.3.2.4

• 1.3.2.2

What is the type of reaction called in this formula? CaC2(s) + H2O (l) →C2H2(g) + Ca(OH)2(aq)

• Double Replacement Reaction

• Combustion + Synthesis Reaction

• Synthesis Reaction

• Cumbustion Reaction

What is the name of the reaction in this formula? C2H2(g) + O2(g) → CO2(g) + H2O(l)

• Synthesis Reaction

• Double Replacement Reaction

• Combustion Reaction

• Combustion and Synthesis Reaction