Formulas
Compounds
Definitions
Miscellaneous
Calculations
100
The empirical formula for a compound that is 43.6% phosphorus and 56.4% oxygen.
What is P2O5?
100
The compound CuCO3.
What is copper(II) carbonate?
100
This formula for a compound shows the symbols of the elements with subscripts indicating the smallest whole-number ratio of the atoms.
What is the empirical formula?
100
A chemical formula for a molecular compound represents the composition of this.
What is a molecule?
100
A compound's empirical formula is CH3. If the formula mass is 30 amu, it is the molecular formula.
What is C2H6?
200
The empirical formula for a compound that is 53.3% O and 46.7% Si.
What is SiO2?
200
The compound Fe(NO2)2.
What is iron(II) nitrite?
200
It is the mass of one mole of the element.
What is molar mass?
200
The formula mass of ethyl alcohol, C2H5OH.
What is 46.069 amu?
200
In a compound, the algebraic sum of the oxidation numbers of all atoms equals this.
What is zero?
300
The formula for diphosphorous pentoxide.
What is P2O5?
300
The compound KClO3.
What is potassium chlorate?
300
It is a compound composed of two different elements.
What is a binary compound?
300
The percentage composition of CO.
What is 43% C, 57% O?
300
If the molar mass of CS2 is 76.14 g/mol., it is how many grams of CS2 are present in 10.00 mol.
What is 761.4 g?
400
It is the formula for nitrogen monoxide.
What is NO?
400
The compound N2O5 using the Stock system.
What is nitrogen(V) oxide?
400
They are polyatomic ions that contain oxygen.
What are oxyanions?
400
It is the oxidation number of an uncombined element.
What is 0?
400
If the molar mass of H2O is 18.015 g/mol, it is how many grams of H2O are present in 0.20 mol.
What is 3.6 g
500
It is the formula for copper (II) chloride.
What is CuCl2?
500
The compound SO2 using the Stock system.
What is sulfur(IV) oxide
500
It is an ionic compound composed of a cation and an anion from an acid.
What is a salt?
500
The oxidation number of carbon in CI4.
What is +4?
500
If the molar mass of NH3 is 17.03 g/mol, it is how many moles of NH3 are present in 107.1 g.
What is 6.289 mol?
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