What's your name, Bob?
...BOB! what's your name?
...BOB! what's your name?
How many types of atoms are in monatomic ions
There is one type of atom in a monatomic ion
What is the Oxidation number for Hydrogen.
Answer +1
Double: What else?
What is the molecular mass of H2O
18.02 g/mol
what does the empirical formulas do?
Empirical formulas show the
whole number ratio of elements
How do you make a s'more?
Chocolate, graham crackers, a marsh mellow, and FIRE.
Double: What element does fire require?
What is a cation?
A cation is an ion with a positive charge.
Why do you find the oxidation state or number.
In order to indicate the general distribution of electrons among the bonded atoms in a molecular compound or a polyatomic ion.
What is the percentage composition for NaCl?
39.337% Na and 60.663% C
What is the relationship between empirical mass and molecular mass.
Molecular mass = x(Emperical Mass)
Double: What type of number must x be?
What is oxidation?
Hogging of atoms in a compound?
What is the formula for dinitrogen tetroxide?
N2O4
Assign oxidation number to a Hf
+4
What is the percentage composition for KClO3? 28.930% Cl, 39.166% O, and 31.904% K.
28.930% Cl, 39.166% O, and 31.904% K.
what is the definition of empirical formula?
An empirical formula consists of the symbols for the elements combined in a compound, with subscripts showing the smallest whole-number mole ratio of the different atoms in the compound.
A molecular formula can be found from the empirical formula if:
A molecular formula can be found from the empirical formula if the molar
mass is measured.
Give the prefix for N2O4
Dinitrogen tetroxide
Why do some elements have multiple oxidation states?
metals can have up to 3 valence electrons so they have differing states because of the amount of electrons the different amounts of electrons they give up.
What is formula mass?
The sum of the average atomic masses of all atoms represented in
its formula.
A compound with a formula mass of 42.08 u is found
to be 85.64% carbon and 14.36% hydrogen by mass.
Find its molecular formula?
C3H6
What THREE important, different, things can be calculated from the chemical formula?
Formula mass, molar mass, and percentage composition can be calculated
from the chemical formula for a compound.
What is the charge of an Arsenic ion?
The charge of an Arsenic ion is -3 or As3-
PCl3 Written in stock system form.
phosphorus(III) chloride
Find the molar mass of Ba(NO3)
261.35 g/mol
If 4.04 g of N combine with 11.46 g O to produce a
compound with a formula mass of 108.0 u, what
is the molecular formula of this compound?
answer : N2O5
Carmelization.
Double: What type of chemical process is carmelization?