Cards in this guide (13)
What is the basic unit of chemistry
How many moles are in one molecule
The answer is that there are 6.0221415 x 1023 molecules in 1
mole. (not moles in a molecule)
How is molarity measured
In moles of substance dissolved in 1 L of water -Apex
An electrolytic cell is made with zinc and aluminum electrodes Which of the following happen at the cathode of this cell
Aluminum is reduced.
Zinc ions are formed.
What gas represents the chemical formula C4H10
How is stoichiometry used
Stoichiometry is used to find the molar ratios between the
reactants of a chemical reaction.
What redox conditions will produce a spontaneous reaction
The sum of the voltages of the half-reactions is positive.
What trend does the first ionization energy follow in the periodic table
It decreases when going down a group.
Which of the following describes the entropy change of a gas reaction
If there is an increase in the number of gas molecules, then S > 0.
What important discovery did Ernest Rutherford make
He found that the atom was made up of mostly empty space.
What is characteristic of an ionic bond
Electrons are lost from one atom and gained by another
A steam engine depends on what kind of energy conversion
Heat energy to kinetic energy
What contribution to atomic theory resulted from Albert Einsteins work
a new model of the atom that describe electrons as being in a cloud