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☆☆☆☆☆Cards in this guide (11)
What is a molecular formula
The molecular formula specifies the actual number of atoms of each element in a molecule.
What mass of Na2SO4 is needed to make 2.5L of a 2M solution
709.35g
What is the general form of a synthesis reaction
A+B ➝AB
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
Which the following is a necessary product of a combustion reaction
heat
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)
In the reaction 2Li(s)+2H2O(l) ➝ 2LiOH(aq)+H2(g), which compound is in the gaseous state
H2
How is the mass of 1 mole of an element determined
It is the same as the element’s atomic mass, but in grams.
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