Stoich/Mass to moles to items
How many moles are present in 99.3 grams of aluminum oxide?
9.74 mol
Determine the [H+] of a solution that has a pH of 7.99.
1.02 x 10-8
What type of matter is NCl3?
Ionic compound
Conjugate ammonium as a base.
NH3
How do we find valence electrons?
The groups on the periodic table (1A, 2A, 3A, etc.)
What is the weight of 9.22 x 1025 molecules of ammonium carbonate?
1.47 x 104
Calculate the pOH of a solution that contains an [OH-] of 1.73 x 10-8.
7.8, acidic
The air we breathe is an example of what type of matter?
Homogenous mixture
Is O-2/H2O an acid base pair?
No
What is the VSPER formula of SO2?
3,2,1
Using the reaction 2H2 + O2 -> 2H2O, how many moles of water would be produced from 3 moles of oxygen gas?
6.00 mol O2
Determine if the pH of a solution with an [H+] of 1.56 x 10-3.
2.81, acidic
How many protons are in a Sn-118 isotope?
50
What is the formula of nitrous acid?
HNO2
Determine the molecular geometry of CF4
Tetrahedral
The pOH of a solution is 4.75. Determine the [H+].
5.62 x 10-10
How many electrons are in a cesium ion?
54
Determine the name for H2S.
Hydrosulfuric acid
Find the polarity of PCl3
Polar
Using the reaction 4Fe + 3O2 -> 2Fe2O3, how many grams of iron (III) oxide result from 75 grams of iron?
53.6 g of Fe
A solution has an [OH-] of 2.5 x 10-4. Is the pH acidic or basic?
Basic. The pH is 10.4.
Determine the protons, neutrons, and electrons of a Cobalt-60 isotope.
27, 33, 27
What is the formula for hypochlorous acid?
HClO
Determine the molecular geometry and polarity of CH2Cl2.
Tetrahedral, Polar