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
How is stoichiometry used
Stoichiometry is used to find the molar ratios between the
reactants of a chemical 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 is the molarity of a solution of .5 mol of CuNo32 in .5 L water
How much mass does 1 mol of o2 gas have
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 happens to the anode in an electrochemical cell
What is the molar mass of H2CO3
What is A mixture of gasoline and air explodes when it encounters a spark known as
What is the net ionic equation for the reaction 2kohaq h2so4aq 2h2ol k2so4aq
OH- 2H+ -> 2H2O(I)
ywwww
:)
How should the combustion reaction C5H8 O2 CO2 H2O be balanced
Answer this question…
C5H8 + 7O2 5CO2 + 4H2O
Hydrogen-powered cars create less pollution than gasoline-powered cars when driven. What might be a challenge to using hydrogen as a fuel
Challenges to hydrogen as fuel include no distribution network,
ie gas stations, and fear that the car co u l d explode like the
Hindenburg.
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
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
