1. What is the law of conservation of mass?
2. How is the law of conservation of mass related to balancing equations?
3. What is a balanced chemical equation?
4. Balance the following combustion reaction, and draw a corresponding picture of the correct number of
particles.
C2βH4β + O2β β CO2β + H2βO
5. I have ten moles of iron atoms in the reactant side of a reaction. Do I have enough information to determine
how many moles of iron atoms I will have following the reaction? If so, how many moles of iron atoms will I
have at the end of a reaction? If not, what else do I need to know?
6. I have three moles of Methane (CH4β) on the reactant side of the reaction. Do I have enough information to
determine how many moles of products I will have following a reaction? If not, what else do I need to know?
Answers: 3
Chemistry, 22.06.2019 00:30
Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?
Answers: 2
Chemistry, 22.06.2019 07:30
11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg
Answers: 3
Chemistry, 22.06.2019 16:50
Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.
Answers: 3
Chemistry, 22.06.2019 21:00
As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.
Answers: 1
1. What is the law of conservation of mass?
2. How is the law of conservation of mass related to ba...
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