Cards in this guide (17)
Calculate the number of atoms of O contained in 16.0 pounds of O
16.0 lbs = 7,257 g of O2
Oxygen exists in the gas form as 02
7,257g O2 * 1 mol O2/ 32 g * 2 mol O / 1 mol O2 * 6.022x10^23
atoms/mol
= 2.73E26 atoms of O
What is the general form of a synthesis reaction
What information does a solubility table give
it tells which compounds will dissolve in water
What is the mass percent composition of an element in a molecule
Percentage composition= (mass of the element/mass of the
molecule)*100
The fraction of the molecule's mass that comes from the
element's mass
What kind of information does the activity series of metals give us
It compares how reactive the metals are
It predicts if one metal will replace another metal in a
compound
What is the molarity of 4 mol of NaOH dissolved in 2 L of water
How does the activity series of metals tell which reactions will occur
Metals higher in the series will replace metal ions in solution
that are lower in the series
Which of the following combustion reactions is balanced correctly
The correct answer is: C5H12 + 8O2 5CO2 + 6H2O.
What kind of reaction is 2C2H6 7O2 g 4CO2 6H2O
Which the following is a necessary product of a combustion reaction
How should the combustion reaction C5H8 O2 CO2 H2O be balanced
Answer this question…
C5H8 + 7O2 5CO2 + 4H2O
If the products of a reaction are NaCl and H2O what does the law of conservation of mass reveal about the reactants in the reaction
The reactants will have one Na, one Cl, one O, and two H atoms
The chemical reaction that occurs when gasoline and air are ignited is called an
Combustion reaction
(Apex)
Is not a concern regarding the use of corn as a biofuel
The color of corn is different than the color of gasoline or coal
APEX
In the reaction 2Li(s)+2H2O(l) ➝ 2LiOH(aq)+H2(g), which compound is in the gaseous state
How is the mass of 1 mole of an element determined
It is the same as the element’s atomic mass, but in grams.
Finish balancing the following equation:__Al(s)+3Zn(NO 3 )2(aq) ➝ Al(NO 3)3(aq)+__Zn(s) What coefficient does Al(s) have in the balanced equation
