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Elementary,Middle School,High School,College,University,PHD
| Teaching Since: | Apr 2017 |
| Last Sign in: | 93 Weeks Ago, 1 Day Ago |
| Questions Answered: | 7570 |
| Tutorials Posted: | 7352 |
BS,MBA, PHD
Adelphi University/Devry
Apr-2000 - Mar-2005
HOD ,Professor
Adelphi University
Sep-2007 - Apr-2017
Question 1
The study of the reactivity and structure of almost all carbon containing compounds is __________ chemistry.
covalent
hybridization
organic
inorganic
Question 2
The ratio of particles of solute to the total particles quantity in a solution can be expressed as __________.
weight percent
molarity
parts per million
molality
Question 3
__________ is calculated by dividing the moles of a solute by the volume of the solution in liters.
weight percent
parts per billion
molarity
partial pressure
Question 4
A(n) __________ cell uses the reaction between oxygen and hydrogen gases catalyzed by platinum to generate power.
lead
acid
fuel
redox
Question 5
An example of __________ is when a helium filled balloon loses helium gas through the small pores of the balloon.
absolute zero
mole fraction
diffusion
effusion
Question 6
In a chemical reaction, a __________ system is one in which matter cannot enter or leave.
gaseous
open
free
closed
Question 7
A pH of __________ would be considered acidic.
7
9
1
14
Question 8
An organic compound where each carbon is bonded to an oxygen is called a __________.
nucleic acid
fat
carbohydrate
protein
Question 9
The overall reaction rate of a chemical reaction is directly dependant on the __________ of the rate-determining step.
volume
weight
mass
speed
Question 10
The antimatter version of an electron is called a(n) __________.
neutron
proton
positron
ion
Question 11
Which of the following is a typical unit of pressure?
torr
meters
kilograms
joules
Question 12
The __________ of a solution refers to the number of solute moles that are mixed with every single solvent kilogram.
partial pressure
molarity
molality
volume
Question 13
In an aqueous solution, if [H3O+]=[OH-] then the solution is called __________.
basic
acidic
radioactive
neutral
Question 14
If a hydrocarbon does not contain any multiple bonds then it is called __________.
unsaturated
alkyne
alkyne
saturated
Question 15
A(n) __________ is used to compare the initial concentrations of the components of a reaction to the concentrations at equilibrium.
fixed temperature
ICE table
calorimeter
volumeter
Question 16
Which term is used to describe an exploration of the relationship between work, heat, and different types of energy?
Potential energy
Thermodynamics
Exothermy
Endothermy
Question 17
__________ Curie showed that radioactivity was caused by the amount of an element in the sample and not by a chemical reaction.
Charles
Galvan
Marie
Heisenberg
Question 18
Solutions consist of a solvent and at least one __________.
metal
solute
electron
proton
Question 19
__________ potential measures a voltaic cell’s ability to generate an electric current.
Oxidation
Active
Electrical
Positive
Question 20
The alkane __________ would have five carbons in its structure.
hexane
pentane
butane
methane
Question 21
In batteries, __________ cells generate an electron flow via oxidation reduction reactions.
external
neutral
galvanic
circuit
Question 22
A(n) __________ battery contains a positive electrode made of paste.
closed system
open system
dry cell
wet cell
Question 23
According to __________ Law, the enthalpy change between products and reactants is equal regardless of the multiple steps of a reaction.
Hess's
Charles's
Vant Hoff's
Avogadro's
Question 24
An Arrhenius acid is one that produces _________ when dissolved in water.
OH-
H+
NaOH
Ca
Question 25
A reducing__________ is one that makes reduction possible.
anion
agent
cation
isotope
Question 26
Which equation is typically used to express the ideal gas law?
PV=nRT
P - V=nRT
P + V=nRT
PV=n +R/T
Question 27
The __________ of reaction can enable one to tell whether a reaction is exothermic or endothermic.
enthalpy
entropy
coefficient
thermochemistry
Question 28
Hydrocarbons with carbons connected by a double bond are called __________.
alkynes
saturated
alkenes
alkanes
Question 29
The process of _____________ involves the net H2 addition across a dual bond.
sublimation
evaporation
halogenation
hydrogenation
Question 30
An oxidizing __________ is one that makes oxidation possible.
anion
isotope
cation
agent
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