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 is another way to write 6 x 10 -2
58 is another way of writing it. Unless 10-2 is in parentheses,
you do the multiplication first. 6(10-2) = 48.
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
How do reactants and products participate in a chemical reaction
the reactants are compounds that react to form new compounds ,
the products
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
What happens to the anode in an electrochemical cell
What is the molar mass of H2CO3
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
Jesse notices that gas mileage jumps from 20 to 40 miles per gallon when he uses his cruise control one likely explanation for this is
his car has turned on more pistons to provide the extra energy needed to accelerate.
How would 0.000000728 be written in scientific notation
It is 7.28*10^-7 in scientific notation
In the reaction 2Li(s)+2H2O(l) ➝ 2LiOH(aq)+H2(g), which compound is in the gaseous state
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
