One "mole" in chemistry represents the number:
The International Committee for Weights and Measures (ICWM) defines one mole as the number of atoms in exactly:
Since 12C’s molar mass is 12 grams, 48 grams of 12C atoms would be equal to ____ moles.
Avogadro’s number acts as the conversion factor for converting between the number of moles in a sample and the number of molecules in the sample.
If there are 0.20 moles in 8.9 grams of CO2, what is the number of CO2 molecules? Use this equation to find the answer: Moles in sample (mol) x Avogadro's number (6.022 x 1023) = Number of sample molecules
Molar mass is a numerical value that represents ______.
An element’s molar mass and atomic weight are always equal.
The element Vanadium has two stable isotopes 50V and 51V. The mass and abundance of these isotopes are 50V = 49.9472 amu and .0025 abundance and 51V = 50.9440 amu and .9975 abundance. With this information, what is the atomic weight of Vanadium?
The atomic weight of Hydrogen is 1.0079 amu and the atomic weight of Oxygen is 15.999 amu. Using this information, what is the molecular weight of a molecule of water, H2O?
The definition of a mole is not open to scientific debate because it is unchanging.
Publicar
Tuitear
Enviar