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☆☆☆☆☆The molecular formula specifies the actual number of atoms of each element in a molecule.
Which of the following (what)?
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
A+B ➝AB
The question is incomplete. There is no "which of the following" options.
it tells which compounds will dissolve in water
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
air and fuel intake, compression and ignition, combustion and expansion, exhaust
It compares how reactive the metals are
It predicts if one metal will replace another metal in a compound
they express the numbers using scientific notation
OH- 2H+ -> 2H2O(I)
ywwww
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A product of a chemical reaction is the substance that is formed.
heat
C3H8 + 5O2 = 3CO2 + 4H2O, so the coefficient for O2 is 5
The reactants will have one Na, one Cl, one O, and two H atoms
The color of corn is different than the color of gasoline or coal
APEX
It is 7.28*10^-7 in scientific notation
H2
It is the same as the element’s atomic mass, but in grams.
The product will contain only Zn, H, and CI. -Apex
