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Chemistry

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Marcella Predovic

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4y ago
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Cards in this guide (12)
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)

What is the correct name for the compound N2O4

The correct name is dinitrogen tetroxide.

How is stoichiometry used

Stoichiometry is used to find the molar ratios between the reactants of a chemical reaction.

What is the net ionic equation for the reaction between Na2SO4 and CaCl2

SO42-(aq) + Ca2+(aq) ---> CaSO4(s)

What redox conditions will produce a spontaneous reaction

The sum of the voltages of the half-reactions is positive.

Which property has a trend similar to that of electronegativity

First ionization energy has a trend similar to that of electronegativity.

What information does the percent composition of an atom in a molecule give

The relative amount of mass an atom contributes to a molecule

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 shape is generated when the plane cuts the given solid in the manner shown

The following word describes the generated shape:

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

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