Spring Final Multiple Choice

Symbols used in equations together with the explanation of symbols are shown below

(aq) dissolved in water

Convert . 2300 mmHg

1750mmhg

Convert 6.7 Liters into militers

6700ml

A catalyst is:

A chemical that speeds up the reaction

If a synthesis reaction takes place between potassium and chlorine, what is the product?

KCI

Chemical equations must be balanced to satisfy the

Law of conservative mass

Which equation represents Dalton's Law?

P(total)= p1+p2+p3

Which equation represents Guy-Lussac's Law?

P1/T1=P2/T2

Which equation represents the combined gas law?

P1V1/t1= p2v2/t2

Which equation represents Boyle's Law?

P1V1=P2V2

Write a balanced equation to represent the decomposition of lead (IV) oxide into its constituent elements

PbO2->Pb+O2

What's the difference between the delta h of the forward reaction and the delta h of the reverse reaction

Same number, different sign

Activation energy is defined as

The amount of engery the reactants need to start a reaction

The symbol deltaH represents

The change in heat in the reaction

In pv=nrt r stands for

The ideal gas constant

Which of the following is not true concerning the decomposition of a binary compound?

The products are unpredic

In every balanced chemical equation each side of the equation has the same number of :

atoms

If a gas' volume is decreased and pressure is constant, its temperature will

decrease

chemical equations:

describe chemical reactions

If delta H is positive the reaction is

endothermic

Of delta h is negative the reaction is

exothermic

If pressure of a gas is increased and its volume remains constant, what will happen to its temperature?

increase

If the temperature of a gas remains constant but pressure is decreased, the volume will

increases

Which of the following is NOT a true statements concerning what happens in all chemical reactions

new atoms are formed as products

Avogadro stated that equal volumes of gases under the same conditions of temperature and pressure have equal

numbers of molecules

chemical reactions:

produce new substances

Which equation represents the ideal gas law?

pv=nrt

In the chemical equation h2o2-> h2o+o2 the h2o2 is a

reactant

delta h is calculated by

subtracting the PE of the reactant from the product

which equation represents Charles' Law?

v1/t1/v2/t2