Which of the following is an ionic compound?
Br2 C2H4 NH4NO2 PF3
What is NH4+ and NO-
100
Determine the number of moles of Ba(OH)2 present in 56.1 g of Ba(OH)2
What is 0.327 mol Ba(OH)2
100
What is the correct formula for aluminum oxide?
Al2O3 AlO Al3O2 AlO3 Al2O
What is Al2O3
100
How many of the following compounds are polar?
SI2 BF3 PI3 CI4
What is 2
100
How many N atoms are in 3.98 g of NH4NO2
What is 7.48 x 10^22 N atoms
200
Which of the following contain a polar bond but is NOT a polar molecule
F2 NF3 C2F6 SF2
What is C2F6
200
Determine the molar mass of Co(HCO3)2
What is 180.97 g/mol
200
Determine the name of the compound CuCr2O7.
What is Copper(II) dichromate.
200
Draw the Lewis structure for the sulfite ion and determine its electron geometry and its molecular geometry.
What is Tetrahedral, Trigonal pyramidal
200
How many grams of hydrogen are in 1.09 x 10^24 molecules of Fe(C2H3O2)3 ?
What is 16.4 g H
300
Place the following in order of decreasing electronegativity.
Ca Cs Cl
What is Cl>Ca>Cl
300
What mass, in grams, of Mn2O3 contains 5.44 x 10^23 Mn atoms?
What is 71.3 g Mn2O3
300
How many grams of oxygen are present in 167 mg of cobalt(III) Carbonate?
What is 8.07 x 10-2 g O
300
Which of the following compounds has the smallest bond angle?
SiO2 CCl4 BF3 BeCl2
What is CCl4
300
DAILY DOUBLE!!!
What is the mass percent of oxygen in glucose (C6H12O6)?
What is 53.3% O.
400
Which of the following samples contains the highest number of atoms?
4.0 g He
4.0 g Ne
4.0 g Ar
4.0 g Br
What is 4.0 g He
400
What is the empirical formula of a compound that is 55.3% oxygen, 26.7% phosphorus, and 18.0% lithium, by mass?
What is Li3PO4
400
Select the correct name for Ni3(PO4)4
What is nickel (IV) phosphate.
400
DAILY DOUBLE!!!!!
Draw each of the following Lewis structures. How many have resonance structures?
BeCl2 SeO2 ClO3- SO3-2
What is 1.
400
Calculate the formula mass of Al2(SO4)3
What is 342.14 g/ mol
500
a drop of water has a volume of 0.050 mL how many water molecules does it contain? 1 g/mL
What is 1.67 x 10^21 H2O molecules
500
Tryptophan is an essential amino acid used in proteins and is composed of carbon, hydrogen, nitrogen, and oxygen. By mass,it is 64.69% C, 5.92% H, and 15.67% O. what is the molecular mass of tryptophan?
What is 204.23 g/mol
500
Which of the following compound/ name pairs is CORRECT?
NH4Cl/nitrogen tetrahydrogen monochloride
CI4/ carbon(IV) iodide
Na2CO3/ sodium carbonate
Sr(ClO3)/ strontium perchlorate
None of the above
What is sodium carbonate.
500
Place the following compounds in order of increasing bond angles.
BF3 NF3 SiO2
What is NF3<BF3<SiO2
500
A compound is found to contain 45.2 g P and 86.4 g Se. Determine the empirical formula of the compound.