CHEM 210 Practice Problems All Chapters
UPDATED AND VERIFIED
For Neach Nof Nthe Nfollowing Nquantities, Nunderline Nthe Nzeros Nthat Nare Nsignificant
Nfigures, Nand Ndetermine Nthe Nnumber Nof Nsignificant Nfigures Nin Neach Nquantity. N-
NCORRECT NANSWER-a. N0.0030 NL
b. N0.1044 Ng
c. N53,069 NmL
d. N0.00004715 Nm
e. N57,600 Ns
f. N0.0000007160 Ncm^3
Multiply Nthe Nfollowing Nnumbers: N
9.2 Ncm Nx N6.8 Ncm Nx N0.3744 Ncm N- NCORRECT NANSWER-23.4225 Ncm^3 N= N23
Ncm^3
add Nthe Ntwo Nvolumes:
83.5 N+ N23.28 N- NCORRECT NANSWER-106.78 NmL N= N106.8 NmL
subtract Nthe Ntwo Nvolumes:
865.9 NmL N- N2.8121 NmL N- NCORRECT NANSWER-863.0879 NmL N= N863.1 NmL
The Nheight Nof NAngel NFalls Nis N3,212 Nft. NExpress Nthis Nquantity Nin Nmiles N(mi) Nif N1
Nmi N= N5,280 Nft N- NCORRECT NANSWER-3212 Nft Nx N1 Nmi/5,280 Nft N= N0.6083 Nmi
Write Nthe Natomic Nsymbols Nfor Natoms Nwith Nthe Nfollowing Nsubatomic Nparticles:
a.) N8 Nprotons, N8 Nneutrons, N8 Nelectrons
b.) N17 Nprotons, N20 Nneutrons, N17 Nelectrons
c.) N47 Nprotons, N60 Nneutrons, N47 Nelectrons N- NCORRECT NANSWER-16 NO N8
37 NCl N17
107 NAg N47
, Which Nof Nthe Nfollowing Npairs Nare Nisotopes Nof Nthe Nsame Nelement?
a.) N15 NX N8 Nand N15 NX N7
b.) N12 NX N6 Nand N14 NX N6
c.) N15 NX N7 Nand N16 NX N8 N- NCORRECT NANSWER-B
using Nthe Nperiodic Ntable, Nspecify Nthe Natomic Nmass Nof Neach Nelement:
a.) Ncalcium
b.) Naluminum
c.) Nlead
d.) Nbarium
e.) Niron N- NCORRECT NANSWER-a.) N40.08 Namu
b.) N26.98 Namu
c.) N207.2 Namu
d.) N137.3 Namu
e.) N55.85 Namu
Cl Nhas Na Nmass Nof N34.97 Namu N(75.76%), Nand NC Nhas Na Nmass Nof N36.97 Namu
N(24.24%). NUse Nthe Natomic Nmass Nand Npercent Nof Neach Nisotope Nto Ncalculate Nthe
Nweighted Naverage. N- NCORRECT NANSWER-34.97 Namu Nx N75.75/100 N= N26.49
Namu
35.97 Namu Nx N24.24/100 N= N8.962 Namu
N35.45 Namu
Name Nthe Nionic Ncompound Nformed Nfrom Neach Nof Nthe Nfollowing Npairs Nof
Nelements:
a.) Nmagnesium Nand Nnitrogen
b.) Niodine Nand Ncadmium
c.) Nstrontium Nand Nfluorine N
d.) Nsulfur Nand Ncesium N- NCORRECT NANSWER-a.) Nmagnesium Nnitride
b.) Ncadmium Niodide
c.) Nstrontium Nfluoride
d.) Ncesium Nsulfide
Write Nempirical Nformulas Nfor Neach Nof Nthe Ncompounds Nnamed:
a.) Nmagnesium Nnitride
b.) Ncadmium Niodide
c.) Nstrontium Nfluoride
d.) Ncesium Nsulfide N- NCORRECT NANSWER-a.) NMg3N2
b.) NCdi2
c.) NSrF2
d.) NCsS2
Given Nthe Nsystematic Nname Nfor Neach Nformula Nor Nthe Nformula Nfor Neach Nname
Nfor Nthe Nfollowing Ncompounds:
UPDATED AND VERIFIED
For Neach Nof Nthe Nfollowing Nquantities, Nunderline Nthe Nzeros Nthat Nare Nsignificant
Nfigures, Nand Ndetermine Nthe Nnumber Nof Nsignificant Nfigures Nin Neach Nquantity. N-
NCORRECT NANSWER-a. N0.0030 NL
b. N0.1044 Ng
c. N53,069 NmL
d. N0.00004715 Nm
e. N57,600 Ns
f. N0.0000007160 Ncm^3
Multiply Nthe Nfollowing Nnumbers: N
9.2 Ncm Nx N6.8 Ncm Nx N0.3744 Ncm N- NCORRECT NANSWER-23.4225 Ncm^3 N= N23
Ncm^3
add Nthe Ntwo Nvolumes:
83.5 N+ N23.28 N- NCORRECT NANSWER-106.78 NmL N= N106.8 NmL
subtract Nthe Ntwo Nvolumes:
865.9 NmL N- N2.8121 NmL N- NCORRECT NANSWER-863.0879 NmL N= N863.1 NmL
The Nheight Nof NAngel NFalls Nis N3,212 Nft. NExpress Nthis Nquantity Nin Nmiles N(mi) Nif N1
Nmi N= N5,280 Nft N- NCORRECT NANSWER-3212 Nft Nx N1 Nmi/5,280 Nft N= N0.6083 Nmi
Write Nthe Natomic Nsymbols Nfor Natoms Nwith Nthe Nfollowing Nsubatomic Nparticles:
a.) N8 Nprotons, N8 Nneutrons, N8 Nelectrons
b.) N17 Nprotons, N20 Nneutrons, N17 Nelectrons
c.) N47 Nprotons, N60 Nneutrons, N47 Nelectrons N- NCORRECT NANSWER-16 NO N8
37 NCl N17
107 NAg N47
, Which Nof Nthe Nfollowing Npairs Nare Nisotopes Nof Nthe Nsame Nelement?
a.) N15 NX N8 Nand N15 NX N7
b.) N12 NX N6 Nand N14 NX N6
c.) N15 NX N7 Nand N16 NX N8 N- NCORRECT NANSWER-B
using Nthe Nperiodic Ntable, Nspecify Nthe Natomic Nmass Nof Neach Nelement:
a.) Ncalcium
b.) Naluminum
c.) Nlead
d.) Nbarium
e.) Niron N- NCORRECT NANSWER-a.) N40.08 Namu
b.) N26.98 Namu
c.) N207.2 Namu
d.) N137.3 Namu
e.) N55.85 Namu
Cl Nhas Na Nmass Nof N34.97 Namu N(75.76%), Nand NC Nhas Na Nmass Nof N36.97 Namu
N(24.24%). NUse Nthe Natomic Nmass Nand Npercent Nof Neach Nisotope Nto Ncalculate Nthe
Nweighted Naverage. N- NCORRECT NANSWER-34.97 Namu Nx N75.75/100 N= N26.49
Namu
35.97 Namu Nx N24.24/100 N= N8.962 Namu
N35.45 Namu
Name Nthe Nionic Ncompound Nformed Nfrom Neach Nof Nthe Nfollowing Npairs Nof
Nelements:
a.) Nmagnesium Nand Nnitrogen
b.) Niodine Nand Ncadmium
c.) Nstrontium Nand Nfluorine N
d.) Nsulfur Nand Ncesium N- NCORRECT NANSWER-a.) Nmagnesium Nnitride
b.) Ncadmium Niodide
c.) Nstrontium Nfluoride
d.) Ncesium Nsulfide
Write Nempirical Nformulas Nfor Neach Nof Nthe Ncompounds Nnamed:
a.) Nmagnesium Nnitride
b.) Ncadmium Niodide
c.) Nstrontium Nfluoride
d.) Ncesium Nsulfide N- NCORRECT NANSWER-a.) NMg3N2
b.) NCdi2
c.) NSrF2
d.) NCsS2
Given Nthe Nsystematic Nname Nfor Neach Nformula Nor Nthe Nformula Nfor Neach Nname
Nfor Nthe Nfollowing Ncompounds:
