What is the correct formula for sodium chloride (table salt)?
A) NaCl
B) Na2Cl
C) NaCl2
D) Na2Cl2
C) NaCl
100
2H2+ O2-----> 2H2O
what is the mole ratio between H2 and H2O
2:2
100
if 4.95 g of ethylene (C2H4) are combusted with 3.25 g Oxygen.
what is the limiting reactant?
C2H4= .3535
100
what is the name of the formula...
PV=nRT
ideal gas law
100
a compound contains 18.8% sodium, 29.0% chlorine, and 52.2% oxygen, by mass. if the molar mass of the compound is 122.44 g/mol, determine the empirical and molecular formulas
NaClO4
200
What are the ions in sodium chloride?
A) Na, Cl
B) Na+, Cl-
C) Na-, Cl+
D) Na2, Cl2
B) Na+, Cl-
200
what is the weight of 0.30 mole of sulfur?
9.6gS
200
if 4.95 g of ethylene (C2H4) are combusted with 3.25 g Oxygen.
how many grams of CO2 are formed?
15.56g CO2
200
determine the volume of one mole of an ideal gas at 25*C and 0.915 atm.
27 L
200
Saccharin has by a mass composition 45.89% C, 2.75% H, 7.65% N, 26.20% O and 17.50% S
C7H5NO3S
300
NaClO is named...
sodium hypochlorite
300
How many grams of K in in 12.3X10^24 molecules of K?
798gK
300
take the reaction: NH3 + O2 -----> NO + H2O. in an experiment, 3.25 grams NH3 are allowed to react with 3.50 grams O2
which reactant is the limiting reactant?
O2: .0875
300
what volume of Oxygen is needed to react with solid Sulfur to form 3.5 L SO2?
3.5 L O2
300
use the following reaction: C4H9OH + NaBr + H2SO4 ---> C4H9Br + H2O
If 15.0g of C4H9OH react with 22.4 g of NaBr and 32.7 g of H2SO4 to yield 17.1 g of C4H9Br, what is the percent yield of this reaction?
61%
400
MnO4- is named
Permanganate
400
How many molecules are contained in 355 mg of HBr?
2.64X10^21
400
take the reaction: NH3 + O2 -----> NO + H2O. in an experiment, 3.25 grams NH3 are allowed to react with 3.50 grams O2
how much of the excess reactant remains after the reaction?
.1033 moles NH3
400
if i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 K, and then i raise the pressure to 14 atm and increase the temperature to 300 K, what is the new volume if the gas?
29.57 L
400
L-Dopa, a drug used for the treatment of Parkinson's disease, is 54.82% C, 5.62% H, &.10% N, and 32.46% O by mass composition
C9H11NO4
500
C2O4- is named
Oxalate
500
Given the following equation: 8Fe + S8-----> 8FeS
what mass of iron is needed to react with 16.0 grams of sulfur? How many grams of FeS are produced
.499 mole Fe
43.9gFeS
500
consider the reaction of C6H6 + Br -----> C6H5Br + HBr
what is the theoretical yield of C6H5Br if 42.1 g of C6H6 react with 73.0 g of Br2?
.4562 moles C6H5Br2
500
determine the volume of occupied by 2.34 grams of carbon dioxide gas at STP
1.19 L CO2
500
aspartic acid contains 36.09% C, 5.30% H, 10.52% N, and 48.08% O by weight. what is the emperical formula?