Question 1. 1. Methane burns in oxygen to yield carbon dioxide and water. The chemical formula for this reaction is CH4 + 2O2 CO2 + 2H2O. What is the productt, or what are the productss, of this reaction? (Points : 3)
oxygen and methane
water and methane
carbon dioxide and methane
carbon dioxide and water

Question 2. 2. Carbon and oxygen combine to form carbon dioxide. What are the reactants, or what is the reactant, in this chemical reaction?
(Points : 3)
carbon only

oxygen only

carbon and oxy

Question

Question 1. 1.  Methane burns in oxygen to yield carbon dioxide and water. The chemical formula for this reaction is CH4 + 2O2  CO2 + 2H2O.  What is the productt, or what are the productss, of this reaction? (Points : 3)  
       oxygen and methane
        water and methane
        carbon dioxide and methane
        carbon dioxide and water
 
      
Question 2. 2.  Carbon and oxygen combine to form carbon dioxide. What are the reactants, or what is the reactant, in this chemical reaction?
 (Points : 3)  
       carbon only

        oxygen only

        carbon and oxy

anonymous · Answer

1. Carbon Dioxide and Water 

2. Ammonia

anonymous · Answer

2. Carbon and oxy

anonymous · Answer

medal please

anonymous · Answer

c and o

anonymous · Answer

I really need help to finish this one test you think you can help?

anonymous · Answer

Yeah

anonymous · Answer

.  What does the law of conservation of mass say?
 (Points : 3)  
       The mass of the reactants is greater than the mass of the products in a chemical reaction.

        The mass of the products in a chemical reaction is equal to the mass of the reactants.

        The mass of the reactants is less than the mass of the products in a chemical reaction.

        The mass of the products in a chemical reaction is unrelated to the mass of the reactants.

 
      



Question 4. 4.  Which of the following equations is balanced?
 (Points : 3)  
       P + 2O2  PO2

        P + O2  P2O5

        4P + 5O2  2P2O5

        4P + 2O2  2P4O5

anonymous · Answer

3.   The mass of the reactants is greater than the mass of the products in a chemical reaction.

4.  4P + 2O2  2P4O5

anonymous · Answer

Oh my gosh thank  you! You still wanna help? Its a 20 question test and frankly the my last one in the course

anonymous · Answer

Sure

anonymous · Answer

Thank you! Chem is my weakest subject!!


  What type of chemical reaction is 4Fe + 3O2  2Fe2O3 ?
 (Points : 3)  
       synthesis

        decomposition

        double-displacement

        single-displacement

 
      



Question 6. 6.  What is not true about most combustion reactions?
 (Points : 3)  
       Energy is released.

        Molecular oxygen is a reactant.

        A carbon-based fuel is a reactant.

        Elemental carbon is a produ

anonymous · Answer

5) Synthesis. 
6) Energy. 
7) Synthesis. 
8) The reaction has more than one product. 
9) Decomposition. 
10) Decomposition reactions are essentially the opposite of synthesis reactions. 
11) Double-Displacement. 
12) CdCl2 + H2 
13) Formation of a precipitate. 
14) Double-Displacement. 
15) A reaction in which the exchange of electrons (or oxygen) occurs.

anonymous · Answer

O.O holy... Okay I love you. Hahahahahaha

anonymous · Answer

Bye

anonymous · Answer

Sorry I went off line and couldn't get back on thank you for those even if there from yahoo XDD