chemistry Final
how many atoms are in 0.625 moles of Ge
3.76 x 10^23
what is the percent yield of this reaction
32.7%
which is supported by the data in the table?
3342 C
what is the percent nitrogen in the compound N2O3
36.8%
what is the mass of one molecule of barium hexafluorosilicate
4.64 x 10^-22 g
what are the approximate temperature and pressure at that point
4000 C and 10^5 atm
what is the ph at the equivalent point of this titration
5
what will be the volume of the blimp at a height of 2300m where the temperature is 12C
5.40 x 10^6 L
approximately how much energy will it take to break all the bonds present in the molecule below
5011 Kj/mol
what is the present composition of sodium hydroxide
57.48% Na, 40.00% O, 2.52% H
how many electron pairs surround the central Se atom
6
how many grams are in 2.000 mol of formaldehyde
60.06 g
what is the maximum number of moles of NaOH that can be produced
8.097 mol
how much energy can be obtained from a candy bar containing 130 g of glucose
836 kj
what is the percent yield of this reaction
86.8%
which is the correct formula for the compound chromium sulfate
Cr2(SO4)3
which container contains 110 g of its gas
D
which diagram shows the substance that has the weakest intermolecular forces
London dispersion forces
which indicator would be effective for detecting the end point of this titration
bromo green
which does not affect the viscosity of a liquid
capillary action
what type of property prevents hydrofluoric acid from being transported or stored in glass containers
chemical property
stoichiometry is based on the law of chp. 11
conservation of mass
which statement is not true? chip. 6
the atomic radius of Na is less than the atomic radius of Mg
which is not a reducing agent In a redox reaction
the electron acceptor
which is the electron configuration for iron
the longest option
which describes a system that has reached chemical equilibrium
the rate at which the forward reaction occurs equals the rate of the reverse reaction
what is true of this reaction
two ammonia molecules are formed, with two nitrogen molecules remaining
will a visible reaction occur
yes, solid nickel will precipitate out of the solution
in which group does element X most likely belong
1
what is the particle pressure of Ar
1.734 atm
what is the ratio of diffusion rates for nitric oxide and nitrogen tetroxide cp. 12
1.751
what is the el electronegativity of the element with atomic number 14
1.8
how much more NaH2 PO4 will Dr. R have to buy to make enough pyrophosphate
130.0 g
which could not be the melting point of Cr2O3
148 C
which group is composed entirely of nonmetals
18
how many grams of copper metal will be needed to use up all of the AgNO3 in Dr. R laboratory
18.70g
which container will have the fastest rate of effusion
B
of the salts below, which would require the most energy to break the ionic bonds
BaCl2
which compound does not have a bent molecular shape
BeH2
if the molar mass of but anoxic acid is 88.1 g/mol, what is its molecular formula
C4H8O2
which compound is nonpolar
CCl4
what is the empirical formula for this compound
CH3NO2
which compound contains at least one pi bond
CO2
what is the empirical formula for this compound
LiOH
which is not true of molecular compounds
Lewis structures show the arrangements of electrons in covalent molecules
which diatomic gas has the shortest bond between its two atoms
N2
which compound is this most likely to be
N2O5
elements labeled W have their valence electrons in which sublevel
P
which elements tend to have the largest atomic radius in their periods
Y
which does not describe a mole
a unit used to count particles directly
which is not an assumption of he kinetic molecular theory
all the gas particles in a sample have the same velocity
which is evident in the graph below
as pressure decreases temperature decreases
an ionic bond would form between which pairs of elements
atomic number 8 and atomic number 12
which type of reaction is shown below
double replacement
acetaldehyde and botanic acid must have the same chp.10
empirical formula
which behaves as an ideal gas
gas D
what is the group, period, and block of an atom with the the electron configuration of ..
group 16, period 4, p-block
on the modern periodic table, metallics are found only in
groups 13 through 17
what happens when AgClO3 and NaNo3 are mixed
no visible reaction occurs
when moving down a group on the periodic table, which two atomic properties follow the same trend
ionic radius and atomic radius
a compound is discovered to have a melting point of -100C. which could be true of this compound?
it has either a polar covalent bond or a nonpolar covalent bond
which is not true of the sc^3+ ion
it is a scandium ion with three positive charges
in what forms does carbon exist at 6000 C and 10^5 arm
liquid carbon only
the high strength of its ionic bonds results in all of the following properties of NaCl2 except
low solubility
which description is supported by the model shown ... chp. 9
metals are excellent conductors of heat and electricity
Elements in the same group of the periodic table have the same... chp. 6
number of valence electrons
in which group is Element Z most likely found
p-block
which is a description of a pattern displayed by elements in the periodic table
periodic repetition of their properties when arranged by increasing atomic number
what is the molecular compound name for SiI4.. chp. 8
silicon tetraiodide
what type of reaction is described by the following equation .. chp. 9
single replacement
what is the independent variables in the experiment
temperature
under what conditions is diamond most likely to form
temperatures < 3500C and pressures > 10^5 atm