Formulas
Roman Numerals Represent the...
What is Charge
What are the 2 common positive valences of Iron
What is two and three
What is the first step of writing an empirical formula?
What is percent to gram
In order for you to find the molecular formula what MUST be given?
What is molecular mass/weight?
The charge on Sodium (Na)
What is +1
Prefixes represent the...
What is amount
What is the prefix for 5
What is penta
What is the second step of writing an empirical formula?
What is grams to moles
What is the first step of finding the molecular formula?
What is find the empirical formula
A representation of the kinds of atoms and the number of atoms in the smallest representative unit is a
What is a chemical formula
When writing a chemical formula does the positive or negatively charged ion come first?
What is positive
When naming a compound with a +2 charge on Iron, what Latin term and suffix will I use?
What is Ferrous
What is the third step of writing an empirical formula
What is divide by the smaller number
Step 3 of finding the molecular formula states to "multiply the formula weight by "X" and set equal to the molecular weight". How do we find X?
What is divide both sides by the formula weight
The percent composition of a compound is constant is stated by the law of...
What is Definite Composition
Write the correct chemical formula for Aluminum Oxide
Al2O3
Silver Phosphate
Determine the empirical formula AND chemical name of a molecule containing 30.46% nitrogen and 69.54% oxygen. Show your work.
What is NO2 - Nitrogen Dioxide
Determine the molecular formula for a compound with a molecular mass of 92.01 grams that contains 30.46% nitrogen and 69.54% oxygen.
What is N2O4
What is the only positively charged polyatomic ion on your chemistry helper? Write the formula and name.
NH4+1 - Ammonium
Write the correct chemical formula for Sodium Hydroxide
NaOH
Name the following compound/molecule: Fe2O3
What is Iron (III) Oxide
Determine the empirical formula AND chemical name of a compound containing 24.74% Potassium, 34.76% manganese, and 40.50% Oxygen. Show your work.
A compound containing 40.0% carbon, 5.7% hydrogen, and 53.3% oxygen has an molecular mass of 175 g/mol. What is the molecular formula?
C6H12O6
What is the formula for percent composition?