The mass of a mole is equal to the mass of the substance(atom or compound)
100
A 167.0 g sample contains 133.4 g of Copper and 33.6 g of Oxygen. Find the Percent Composition from this analysis.
What is 79.9% Copper & 20.1% Oxygen
100
The empirical formula for C8H18?
What is C4H9
200
Reaction that TYPICALLY forms Carbon Dioxide
What is Combustion
200
Predict the products:
Mg + H2O --->
What is Mg + 2 H2O ---> Mg(OH)2 + H2
200
6.02x1023
What is Avogadro’s number?
200
Calculate the Percentage Composition of Rust (* Iron (III) Oxide*)
What is 70% Iron & 30% Oxygen
200
Explain Molecular and Empirical Formulas.
Molecular- actual ratio of elements in a compound.
Empirical- Simplest whole number ratio of elements in a compound.
300
Law that states matter can neither be created or destroyed
What is Law of Composition
300
A list of substances ranked in order of relative reactivity
What is Activity Series?
300
The process for finding the Molar Mass
What is when you have a compound, take the mass of each atom, multiply the mass by how many atoms are present, and then add all the individual masses together.
300
Calculate the Percent Composition for Ammonium Oxalate.
What is
22.6% Nitrogen
6.5% Hydrogen
19.4% Carbon
51.6% Oxygen
300
Find the empirical formula for a compound consisting of 63% Mn and 37% O.
What is MnO2
400
Balance the following reaction:
H3PO4+Mg(OH)2→ Mg3(PO4)2+H2O
2,3,1,6
400
Using your activity series, can this reaction can occur:
Cd(s)+Pb(NO3)2(aq)→
Yes
400
Calculate the molar mass for the following:
Copper (II) Chlorite
What is 198 g/mol
400
Percentage of the total mass of the compound contributed by each element.
What is Composition mean?
400
Aspirin contains 57.2% Carbon, 4.8% Hydrogen and 38.0% Oxygen. it has a molecular mass of 168 g. What are its Empirical and Molecular formulas?
Molecular-C8H8O4
Empirical-C2H2O
500
The FOUR indicators of a Chemical Reaction?
What is Change of Color,Production of Gas, Absorption/Release of Heat, and Formation of a Precipitate
500
Predict the products and BALANCE the equation:
Pb(NO3)2 + KI --->
What is Pb(NO3)2 + 2 KI ---> PbI2 + 2 KNO
500
Mass in grams of 7.5x10^-7 atoms of nickel (Ni)
What is 7.3x10^-7 grams Ni
500
(total atomic mass of element)
------------------------------
(total mass of the compound)
All times 100
What is the formula for Percent Composition?
500
NutraSweet is 57.14% C, 6.16% H, 9.52% N, and 27.18% O. Calculate the Empirical Formula of NutraSweet.