The ratio of the average mass of one molecule of an element of compound to one twelfth of the mass of an atom of Carbon-12
What is Molecular Weight ?
100
The mass of an atom of a chemical element expressed in atomic mass unit. It is approximately equivalent to the number protons and neutrons in the atom.
What is The Atomic Mass ?
100
How many moles are in 15 grams of Lithium ?
0.46 moles
200
The amount of a pure substance containing the same number of chemical units as there are atoms in exactly 12 grams of Carbon-12 (6.023 x 10^23)
What is A Mole ?
200
Each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei,and hence differ in relative atomic mass but not in chemical properties.
What is A Isotope ?
200
How many grams are in 2.4 moles of sulfur ?
77.0 grams
300
The number of protons in a nucleus of an atom, which determines the chemical properties of an element and its place on the periodic table.
What is A Atomic Number ?
300
A physical property. It is defined as the mass of a given substance. Expressed in g/mol.
What is Molar Mass ?
300
How many moles are in 1.2 x 10^3 grams of Ammonia NH3 ?
1.26 moles
400
The total number of protons and neutrons in a nucleus.
What is Mass Number ?
400
The number of molecules in a mole of a substance approximately 602,250,000,000,000,000,000,000. Better Known As 6.022 x 10^23
What is Avogadro's Number ?
400
How many grams are in 0.02 moles of Beryllium Iodide, Bel2 ?
5.2 grams
500
A table of the chemical elements arranged in order of atomic numbers.
What is A Periodic Table?
500
A distinct kind of atom or nucleus characterized by a specific number of protons and neutrons.
What is Nuclide ?
500
How many moles are in 3.4 x 10^-7 grams of Silicon Dioxide SiO2 ?