Chemical Reaction Types
Determine the reactant(s) and product(s) of the following chemical reaction:
4Na + O2 -> 2Na2O
Reactants: Sodium and Oxygen
Products: Sodium Oxide
Describe a balanced chemical equation
A chemical equation that has the same elements and number of atoms of those elements in the reactants and products.
What is Avogadro's Number
6.02 x 1023
Calculate the molar mass of Na2S
78.05
What was the first country to put a woman in space?
The USSR
Which chemical reaction type(s) are described as two simple substances coming together to form a more complex substance?
Synthesis
Describe the difference between a coefficient and a subscript
A Coefficient is large and goes in front of what is changed.
A subscript is small and goes to the bottom right of what is changed.
Calculate the Molar Mass of Ba2N3
Ba = 274.66
N = 42.03
Ba2N3 = 316.69
Describe the difference between an actual and theoretical amount.
Actual is what happened when you did it in an experiment, a theoretical is what should have happened.
Who was the head coach that has won 3 superbowls?
Chuck Noll
Which chemical reaction type(s) are endothermic?
Decomposition
Define the law of conservation of mass.
matter is neither created nor destroyed in a chemical reaction, only changed.
Calculate the number of moles in 35 grams of Mercury
0.1745 mol
Determine the percent yield for the following experiment. During an experiment where scientists were testing the precipitation rates of chemical X and chemical Y, it was found that out of the initial amount of 132g , 16.0g worth of precipitate was created. In their theory, it was stated that 19.2g of precipitate would be created, according to known laws. What is the percent yield of the reaction between chemical X and chemical Y.
83.33%
What used to be called the apple of love or the love apple?
The tomato
Which chemical reaction type(s) have a replacement that is determined by the activity series?
Single Replacement
Determine if the following equation is balanced:
NaCl + Pb(NO3)2 -> 2Na(NO3) + PbCl2
No
Reactants Atom Products
1 Na 2
1 Cl 2
1 Pb 1
2 N 2
6 O 6
How many moles are in 9.0 x 1022 atoms of Tin?
0.1495 mols
A certain newly synthesized compound is known to contain the elements zinc and oxygen. When a 20.00 g sample of this compound is decomposed, 16.07 g of zinc remains. Calculate the percent of each element in this compound.
Mass of Zinc = 16.07g
Mass of Oxygen = 3.93g
%Zn = 80.35%
%O = 19.65%
What is the name of the chihuahua that was used to popularize Taco Bell
Gadget
Describe an equilibrium reaction.
Constantly Reacts
Same amount of reactants and products
Goes forwards and backwards
Find the product of the single replacement reaction and balance the equation.
AuCl3 + Ca ->
2 AuCl3 + 3 Ca -> 3 CaCl2 + 2 Au
How many atoms are in 477 grams of Iodine?
2.2629 x 1024 atoms
Calculate the percent of each element in Ca(NO3)2
Mm Ca = 40.08 %Ca = 24.42%
Mm N =28.02 %N = 17.07%
Mm O = 96.00 %O = 58.50%
Mm Compound = 164.10
How may squares are on the chessboard?
64