Chemical Formulas
How many oxygen atoms are in one formula unit of Fe₂(CrO₄)₃?
12 Oxygen atoms
Give the name for Cu₂O.
Copper (I) oxide
What is the value of Avogadro's Number?
6.02x10^23 Particles
What type of bond is formed between Na and Cl?
Ionic bond
What are the reactants in the reaction CH₄ + 2O₂ → CO₂ + 2H₂O?
CH₄ + 2O₂
How many atoms of each element are present in Ca₂(SO₄)₃?
17 atoms (2-Ca, 3-S, 12-O)
What is the name of this compound, H₂SO₄?
Sulfuric acid
What is the molar mass of Al₂(SO₄)₃?
342 g/mol
A positively charged ion (formed by losing electrons).
Cation (+)
What type of reaction is shown: 2H₂ + O₂ → 2H₂O
synthesis reaction
Determine the chemical formula of aluminum sulfate.
Al₂(SO₄)₃
Name the following: P₂O₅.
Diphosphorus pentoxide
A compound contains 40.0% sulfur and 60.0% oxygen by mass. Determine its empirical formula.
SO₃
What charge does an aluminum ion typically have?
Al³⁺, because it loses three electrons to achieve a stable noble gas configuratio
Name the five types of chemical reactions.
Synthesis, decomposition, single replacement, double replacement, combustion.
What is the correct formula for Iron (III) chloride?
FeCl₃
What is the Stock name for SnI₄?
Tin (IV) iodide
A compound is found to contain 29.0% sodium (Na), 40.5% sulfur (S), and 30.5% oxygen (O) by mass. Determine its empirical formula.
Na₂S₂O₃ / NaSO2
Which group/s in the periodic table is most likely to form cations?
Groups 1 (alkali metals) and 2 (alkaline earth metals).
Identify the type of reaction: Fe+CuSO4 → FeSO4+Cu
Single replacement
What is the formula for ammonium phosphate?
(NH₄)₃PO₄
What is the name of this acid: H₃PO₄?
Phosphoric acid
How many moles are in 1170 g of Cu(NO₃)₂?
6.24 moles
How many bonds do CO₂ forms?
Two double bonds O=C=O
Mg(OH)2 + HCl → MgCl2 + H2O
1,2,1,2 - Mg(OH)2+2HCl→MgCl2+2H2O