Measuring Matter
True or false? A mole is similar to a dozen.
What is true?
1.01 amu
What is the molar mass for Hydrogen?
A chemical combination of two or more different elements
What is a compound?
The percent by mass of each element in a compound
What is percent composition?
Penta-
What is the prefix for 5?
6.02 x 1023
What is Avogadro's number?
molar mass
Oxygen
What is 16.00 amu?
Aluminum oxide
Name for Al2O3
C2H4
What is molecular?
Cl2CoH12O6
What is nickel (II) chloride hexahydrate?
12 g
What is the mass of carbon-12
A ratio of equivalent values used to express the same quantity in different units
What is conversion factor?
dichlorodifluoromethane
What is CC2F2?
True or False?
Is % element=atomic mass/molar mass x 50, the correct formula to find percent composition?
What is false?
A compound that has a specific number of water molecules bound to its atoms
What is a hydrate?
To count atoms, molecules, ions, and formula units
What do scientists use the mole for?
Given mole/1 x Molar mass/1 mole
What is the moles to mass formula?
39.997 g/mol
Molar mass
NaOH
% element=atomic mass/molar mass x 100
What is the percent composition formula?
Anhydrous compounds
What is formed when hydrates are heated?
Given particles/1 x 1 Mole/6.02 x 1023
What is the particles to moles formula?
Given mass/1 x 1 Mole/Molar mass
What is the mass to moles formula?
Molecular or Ionic compound?
(NH4)3PO4
What is ionic?
CH4
What is empirical?
ammonium oxalate monohydrate
What the name for (NH4)2C2O4*H2O?