Chemistry Midterm

Front

What is the balanced equation for the reaction of iron and chlorine gas?

Back

2 Fe + 3 Cl₂ → 2 FeCl₃

Front

What is the chemical formula for aluminum nitrate?

Back

Al(NO₃)₃

Front

What type of reaction is represented by the equation C₇H₁₆ + 10 O₂ → 7 CO₂ + 8 H₂O?

Back

Combustion

Front

How do you determine the empirical formula from percentage composition?

Back

Convert percentages to grams, then to moles, and simplify the ratio.

Front

What is the empirical formula for a compound with 42.07% Na, 18.89% P, and 39.04% O?

Back

Na₃PO₄

Front

What is the molar mass of PbSO₄?

Back

303.27 g/mol

Front

Define a synthesis reaction in chemistry.

Back

A reaction where two or more substances combine to form a new compound.

Front

What is a decomposition reaction?

Back

A reaction where a single compound breaks down into two or more simpler products.

Front

What is a single displacement reaction?

Back

A reaction where one element replaces another in a compound.

Front

What is the definition of molar mass?

Back

The mass of one mole of a substance, typically expressed in grams per mole (g/mol).