Show:
Moles
Molar Mass
Molar Conversions
Balancing Equations
Mystery
100
What is Avagadro's number?
6.02x10^23
100
What are the units of molar mass?
Grams per mole
100
How many moles are in 33 grams of Boron ( B)
About 3 moles
100
Is this balanced? ( Yes or No?) 2H2+O2-->2H2O
Yes!
100
Find the molar mass of C12H22O11
342
200
How many donuts are in a box of 3 dozens?
36
200
How do moles relate to the atomic mass to the number of grams?
because one mole of amu= 1 gram
200
How many number of particles are in .25 moles of NO?
15.05 x 10^22 or 1.5 x 10^23
200
Balanced or not? CH4+O2-->CO2+H2O
No!
200
Balance this: _Fe2O3+_C-->_Fe+_CO3
2Fe2O3+3C-->4Fe+3CO3
300
What is a definition of a mole? why do scientists use it?
A mole is the number of atoms in 12 grams of carbon 12. Scientists use moles to figure out how many atoms or molecules are contained within a certain mass of material
300
What is the molar mass of C6H12O6
About 180 grams/mole
300
How many volume of CH4 gas take up at STP if you start with 32 grams of CH4?
44.8 Liters
300
How do you balance this? _LiNO3+_CaBr2-->_Ca(NO3)2+_LiBr.
2LiNO3+1CaBr2-->1Ca(NO3)2+2LiBr.
300
2NaCN+1CuCO3-->1Na2CO3+1Cu(CN)2 If you start with 100 grams of CuCO3 with an access of NaCN, how many grams of Na2CO3 would you end up with?
85g Na2CO3
400
How many moles are in 1.204 x 10^28 atoms?
0.2 x 10^5
400
How many grams are in 2 moles of NaCl?
About 116 grams
400
Fe2O3 + 3CO2Fe + 3CO2 In this reaction, how many grams of Fe2O3 are required to completely react with 84 grams of CO?
about 160 grams of Fe2O3
400
How do you Balance this? _Mn+_HI-->_H2+_MnI3
2 Mn+6 HI-->3 H2+2 MnI3
400
What is Conservation of Matter? What is Synthesis Reaction?
Conservation of matter is matter that can either be created nor destroyed. Synthesis Reaction is type of reaction in which two or more reactants combine to form a product.
500
Write a Haiku to remember that a mole is 6.02x10^23. 5-7-5 syllable scheme.
( Answers may vary)
500
Explain the steps of finding the molar mass.
Look at the atomic mass of an element on the periodic table. For example, if you want to find the molar mass of carbon, you would find the atomic mass of carbon on the periodic table. Carbon has a molar mass of 12.
500
How many liters of water can be made from 34 grams of oxygen gas at 6.0 grams of hydrogen gas at STP? What is the limiting reactant for this reaction?
47.6 L, O2
500
Which of the following is a balanced equation? A) CH3,CH3,OH + 3O2 ->2H2O + CO2 + 2H2O B) CH3,CH2,OH + 3O2 -> 2CO2 + 2H2O C) CH3,CH2,OH + O2 -> 2CO2 +3HO D) CH3,CH2,OH + 2O2 -> 3CO2 + 2H2O
B
500
How many grams of aluminium sulfate are produced if 23.33g Al reacts with 74.44g CuSO4 ?
53.23g Al2(SO4)3