Mathway | Popular Problems

Popular Problems

Rank	Topic	Problem	Formatted Problem
1201	Find the Oxidation Numbers	Cr_2O_3	$C r_{2} O_{3}$
1202	Find the Oxidation Numbers	Na_2SO_4	$N a_{2} S O_{4}$
1203	Find the Oxidation Numbers	CrAuCd	$C r A u C d$
1204	Find the Oxidation Numbers	CrCl_3	$C r C l_{3}$
1205	Find the Oxidation Numbers	CrF_5	$C r F_{5}$
1206	Find the Oxidation Numbers	CrH_5OH	$C r H_{5} O H$
1207	Find the Oxidation Numbers	CrO_2	$C r O_{2}$
1208	Find the Oxidation Numbers	CrSO_4	$C r S O_{4}$
1209	Find the Oxidation Numbers	Cs_2O	$C s_{2} O$
1210	Find the Oxidation Numbers	Cu(I)	$C u (I)$
1211	Find the Oxidation Numbers	Cu(OH)_2	$C u {(O H)}_{2}$
1212	Find the Oxidation Numbers	Cu_2O	$C u_{2} O$
1213	Find the Oxidation Numbers	Cu_49	$C u_{49}$
1214	Find the Oxidation Numbers	CuClO_3	$C u C l O_{3}$
1215	Find the Oxidation Numbers	CuI_2	$C u I_{2}$
1216	Find the Oxidation Numbers	CuSn_4	$C u S n_{4}$
1217	Find the Oxidation Numbers	CuSO_4	$C u S O_{4}$
1218	Find the Oxidation Numbers	Es	$E s$
1219	Find the Oxidation Numbers	F_2	$F_{2}$
1220	Find the Oxidation Numbers	CoH	$C o H$
1221	Find the Oxidation Numbers	copper (II)(nitrate)	copper $(I I) (n i t r a t e)$
1222	Find the Oxidation Numbers	cos(Am)	$C O s A m$
1223	Find the Oxidation Numbers	FeOFe_2O_3 Fe_3O_4	$F e O F e_{2} O_{3}$ $F e_{3} O_{4}$
1224	Find the Oxidation Numbers	FePo_4	$F e P o_{4}$
1225	Find the Oxidation Numbers	FH	$F H$
1226	Find the Oxidation Numbers	FT(cT)c	$F T c T c$
1227	Find the Oxidation Numbers	GaRuCl	$G a R u C l$
1228	Find the Oxidation Numbers	Gd_52	$G d_{52}$
1229	Find the Oxidation Numbers	H_2CO_3	$H_{2} C O_{3}$
1230	Find the Oxidation Numbers	H_2N_2O_2	$H_{2} N_{2} O_{2}$
1231	Find the Oxidation Numbers	Fe_3O_4	$F e_{3} O_{4}$
1232	Find the Oxidation Numbers	Fe(NO_3)_3	$F e {(N O_{3})}_{3}$
1233	Find the Oxidation Numbers	Fe(OH)_2	$F e {(O H)}_{2}$
1234	Find the Oxidation Numbers	Fe_2I_3	$F e_{2} I_{3}$
1235	Find the Oxidation Numbers	Fe_2O_2	$F e_{2} O_{2}$
1236	Find the Number of Molecules	14.9gN_2O_5 in	$14.9 g N_{2} O_{5}$ in
1237	Find the Number of Molecules	16.2 gramsAl	$16.2$ gramsAl
1238	Find the Number of Molecules	2.75g of NaNO_3	$2.75 g$ of $N a N O_{3}$
1239	Find the Number of Molecules	20.0g of CH_3CH_2OH	$20 g$ of $C H_{3} C H_{2} O H$
1240	Find the Number of Molecules	20g of H_2o	$20 g$ of $H_{2} o$
1241	Find the Number of Molecules	22.5 mLanda (mass)(of)(27.2g)	$22.5$ mLanda $(m a s s) (o f) (27.2 g)$
1242	Find the Number of Molecules	23.0 gNa	$23$ gNa
1243	Find the Number of Molecules	23.4g of CO_2	$23.4 g$ of $C O_{2}$
1244	Find the Number of Molecules	26 gFe	$26$ gFe
1245	Find the Number of Molecules	28g of N_2	$28 g$ of $N_{2}$
1246	Find the Number of Molecules	345.2g of SO_3	$345.2 g$ of $S O_{3}$
1247	Find the Number of Molecules	359 gramAl	$359$ gramAl
1248	Find the Number of Molecules	4.3 gFe	$4.3$ gFe
1249	Find the Unknown in the Combined Gas Law	P_4=22g , Cl_2=57	$P_{4} = 22 g$ , $C l_{2} = 57$
1250	Find the Unknown in the Combined Gas Law	d=100(mi)r=20mi/hr	$d = 100 (mi) r = 20 m p h$
1251	Find the Unknown in the Combined Gas Law	P(22.5)=(3)(0.082)(395)	$P (22.5) = (3) (0.082) (395)$
1252	Find the Unknown in the Combined Gas Law	P_1=12atm V_1=0.23L T_1=200K P_2=14atm , T_2=300K	$P_{1} = 12$ atm $V_{1} = 0.23 L$ $T_{1} = 200 K$ $P_{2} = 14 a t m$ , $T_{2} = 300 K$
1253	Find the Unknown in the Combined Gas Law	Pn_2=(0.78)(760torr)=590 torr	$P n_{2} = (0.78) (760 t o r r) = 590$ torr
1254	Find the Number of Molecules	1.25g of CCl_4	$1.25 g$ of $C C l_{4}$
1255	Find the Number of Molecules	1000g of SiO_2	$1000 g$ of $S i O_{2}$
1256	Find the Number of Molecules	105g of MgCl_2	$105 g$ of $M g C l_{2}$
1257	Find the Number of Molecules	10g of C_6H_12O_6	$10 g$ of $C_{6} H_{12} O_{6}$
1258	Find the Number of Molecules	11.78 mgin	$11.78$ mgin
1259	Find the Unknown in the Combined Gas Law	Pb(NO_3)_2(aq)=(Pb)<E>{2}<e>+NO_3	$P b {(N O_{3})}_{2} (a q) = (P b) < E > {2} < e > N O_{3}$
1260	Find the Unknown in the Combined Gas Law	p=1.01 atmn=8.00 molT=25C(what)(is)(voulume)
1261	Find the Unknown in the Combined Gas Law	2.5MV=1.0000.5	$2.5 M \cdot V = 1 \cdot 0.5$
1262	Find the Unknown in the Combined Gas Law	3x+2y<=12 , 3x+3y<=15 , x>=0 , y>=0 , P=9x+24y	$3 x + 2 y \leq 12$ , $3 x + 3 y \leq 15$ , $x \geq 0$ , $y \geq 0$ , $P = 9 x + 24 y$
1263	Find the Unknown in the Combined Gas Law	Determine (the)(total)(pressure)(of)a(gas)(mixture)(that)(contain)(oxygen)(nitrogenandhelium)(if)(the)(pressures)(of)(the)(gasses)(are):P(O)=150(mm)Hg(P(N))=350(mHg)(P(He))=200(mH)g	Determine $(t h e) (t o t a l) (p r e s s u r e) (o f) a (g a s) (mi x t u r e) (t h a t) (c o n t a i n s) (o x y g e n) (n i t r o g e n a n d h e l i u m) (i f) (t h e) (p r e s s u r e s) (o f) (t h e) (g a s s e s) (a r e) : P (O) = 150 mm H g (P (N)) = 350 (m H g) (P (H e)) = 200 m H g$
1264	Find the Unknown in the Combined Gas Law	I=30P=100T=6yr	$I = 30 P = 100 T = 6$ years
1265	Find the Number of Molecules	how (many)(ml)(of)(6.00M)(HCl)(react)(18.0g)	how $(m a n y) (mL) (o f) (6 M) (H C l) (r e a c t) (18 g)$
1266	Find the Number of Molecules	how (many)(mol)(are) in (300g)(of)(Nacl)	how $(m a n y) (m o l e s) (a r e)$ in $(300 g) (o f) (N a c l)$
1267	Find the Number of Molecules	28mg in 500gh_2*0	$28 mg$ in $500 g h_{2} \cdot 0$
1268	Find the Number of Molecules	How (much)(heat)(must)(be)(added)(to)(50.0g)(of)(water)(to)(raise)(the)(temperature)(of)(the)(water)(from)(24.5C)(to)(36.5C)	How $(m u c h) (h e a t) (m u s t) (b e) (a d d e d) (t o) (50 g) (o f) (w a t e r) (t o) (r a i s e) (t h e) (t e m p e r a t u r e) (o f) (t h e) (w a t e r) (f r o m) (24.5 C) (t o) (36.5 C)$
1269	Find the Number of Molecules	how much NaCl can make if given 35.0mL of 3.00M HCland 3.75g of Na_2CO_3	how much $N a C l$ can make if given $35 mL$ of $3 M$ HCland $3.75 g$ of $N a_{2} C O_{3}$
1270	Find the Number of Molecules	what (would)(be)(the)(mass)(of)(the)(1.00kg)(object)(on)(venus)	what $(w o u l d) (b e) (t h e) (m a s s) (o f) (t h e) (1 kg) (o b j e c t) (o n) (v e n u s)$
1271	Find the Number of Molecules	nh_4oh are there in 2.14g of nh_4oh	$n h_{4} o h$ are there in $2.14 g$ of $n h_{4} o h$
1272	Find the Number of Molecules	Whena (20g)(of)a(metal)(is)(pilaced)in15.0mL(of)(water)(the)(volume)(increases)(to)19.5mL(Whats)(the)(de(ns)ity)	Whena $(20 g) (o f) a (m e t a l) (i s) (π l a c e d) i n \cdot 15 (mL) (o f) (w a t e r) (t h e) (v o l u m e) (i n c r e a s e s) (t o) \cdot 19.5 (mL) (W h a t s) (t h e) (d e n s i t y)$
1273	Find the Number of Molecules	calculate (the)(energy)(needed)(to)(raise)(the)(temperature)(of)(25.0g)(of)(water)(from)(22.0C)(to)(31.0c)	calculate $(t h e) (e n e r g y) (n e e d e d) (t o) (r a i s e) (t h e) (t e m p e r a t u r e) (o f) (25 g) (o f) (w a t e r) (f r o m) (22 C) (t o) (31 c)$
1274	Find the Number of Molecules	Calculate the enthalpy of formation of 60.0g of ammonia log of NH_3 derived from its compnent elements	Calculate the enthalpy of formation of $60 g$ of ammonia $\log (N H_{3})$ derived from its compnent elements
1275	Find the Number of Molecules	How many g of F are in 355g of CaF_2	How many $g$ of $F$ are in $355 g$ of $C a F_{2}$
1276	Find the Empirical/Simplest Formula	Mn	$M n$
1277	Find the Oxidation Numbers	CuCo_3	$C u C o_{3}$
1278	Find the Oxidation Numbers	H_2P_2O_7	$H_{2} P_{2} O_{7}$
1279	Find the Oxidation Numbers	FeCl_3	$F e C l_{3}$
1280	Find the Oxidation Numbers	(C_12H_22O_11)	$(C_{12} H_{22} O_{11})$
1281	Find the Oxidation Numbers	(MgSO_4)(7H_2o)	$(M g S O_{4}) (7 H_{2} o)$
1282	Find the Oxidation Numbers	(NH_4)_2CO_3	${(N H_{4})}_{2} C O_{3}$
1283	Find the Oxidation Numbers	(NH_4)_3PO_4	${(N H_{4})}_{3} P O_{4}$
1284	Find the Oxidation Numbers	(SO_4)	$(S O_{4})$
1285	Find the Oxidation Numbers	Na_2S_2O_3	$N a_{2} S_{2} O_{3}$
1286	Find the Oxidation Numbers	CrO_3	$C r O_{3}$
1287	Find the Oxidation Numbers	K_3(Al(C_2O_4)_3)	$K_{3} (A l {(C_{2} O_{4})}_{3})$
1288	Find the Oxidation Numbers	MnO_2	$M n O_{2}$
1289	Find the Oxidation Numbers	SnO_2	$S n O_{2}$
1290	Find the Oxidation Numbers	0 , 100molCH_4	$0$ , $100$ mol $C H_{4}$
1291	Find the Oxidation Numbers	0.303 MOL Fe(CO)_5	$0.303$ MOL $F e {(C O)}_{5}$
1292	Find the Oxidation Numbers	10FeSO_4(NH_4)_2SO_46H_2O	$10 F e S O_{4} {(N H_{4})}_{2} S O_{46} H_{2} O$
1293	Find the Oxidation Numbers	17Cl	$17 C l$
1294	Find the Oxidation Numbers	2H_2	$2 H_{2}$
1295	Find the Oxidation Numbers	2H_2O	$2 H_{2} O$
1296	Find the Oxidation Numbers	2KClO_3	$2 K C l O_{3}$
1297	Find the Oxidation Numbers	2KMnO_4	$2 K M n O_{4}$
1298	Find the Oxidation Numbers	2KOH	$2 K O H$
1299	Find the Oxidation Numbers	2PbS	$2 P b S$
1300	Find the Oxidation Numbers	3O_2	$3 O_{2}$