Mathway | Popular Problems

Popular Problems

Rank	Topic	Problem	Formatted Problem
5001	Balance	1.07(atm)=Hg	$1.07 (a t m) = H g$
5002	Balance	Ne+cl=Ca	$N e + c l = C a$
5003	Balance	NH_3(g)+O_2(g)+CH_4(g)→HCN(aq)+H_2O(l)	$N H_{3} (g) + O_{2} (g) + C H_{4} (g) \to H C N (a q) + H_{2} O (l)$
5004	Balance	NH_3+O_2→CO_2+H_2O	$N H_{3} + O_{2} \to C O_{2} + H_{2} O$
5005	Balance	O_2+CS_2→CO_2+SO_2	$O_{2} + C S_{2} \to C O_{2} + S O_{2}$
5006	Balance	nh_3=n_2+h_2	$n h_{3} = n_{2} + h_{2}$
5007	Balance	NH_3→N+H	$N H_{3} \to N + H$
5008	Balance	NH_4OH+AlCl_3→Al(OH)_3+NH(4Cl)	$N H_{4} O H + A l C l_{3} \to A l {(O H)}_{3} + N H (4 C l)$
5009	Balance	P_4+H_2→PH_3	$P_{4} + H_{2} \to P H_{3}$
5010	Balance	P_4S_3+8O_2→P_4O_10+3SO_4	$P_{4} S_{3} + 8 O_{2} \to P_{4} O_{10} + 3 S O_{4}$
5011	Balance	Pb(NO_3)_2+AlCl_3→PbCl_2+Al(NO_3)_3	$P b {(N O_{3})}_{2} + A l C l_{3} \to P b C l_{2} + A l {(N O_{3})}_{3}$
5012	Balance	Pb(NO_3)+HNO_3→Pb(NO_3)	$P b (N O_{3}) + H N O_{3} \to P b (N O_{3})$
5013	Balance	pOH = log of 0.00005
5014	Balance	C_5H_12+O_2→CO_2+H_2O	$C_{5} H_{12} + O_{2} \to C O_{2} + H_{2} O$
5015	Balance	Pb(OH)_2+HCI→H_2O+PbCI	$P b {(O H)}_{2} + H C I \to H_{2} O + P b C I$
5016	Balance	pH=H_3O	$p H = H_{3} O$
5017	Balance	t→f	$t \to f$
5018	Balance	Tc→Ca	$T c \to C a$
5019	Balance	Ti_2+Mo_3→Ce_5Ta_3	$T i_{2} + M o_{3} \to C e_{5} T a_{3}$
5020	Balance	SO_2+O_2=O_3	$S O_{2} + O_{2} = O_{3}$
5021	Balance	N[(8O),2]→H natural log of 2	$N [(8 O), 2] \to H \ln (2)$
5022	Balance	SiF_4+H_2O=H_4SiO_4+H_2SiF_6	$S i F_{4} + H_{2} O = H_{4} S i O_{4} + H_{2} S i F_{6}$
5023	Balance	Sn(NO_3)_4+Fe_2(SO_4)_3→Sn_2(SO_4)_4+Fe(NO_3)_3	$S n {(N O_{3})}_{4} + F e_{2} {(S O_{4})}_{3} \to S n_{2} {(S O_{4})}_{4} + F e {(N O_{3})}_{3}$
5024	Balance	Re→Sc	$R e \to S c$
5025	Balance	S_8+24F_2→8SF_6	$S_{8} + 24 F_{2} \to 8 S F_{6}$
5026	Balance	S+HNO_3+H_2SO_4→NO_2+H_2O	$S + H N O_{3} + H_{2} S O_{4} \to N O_{2} + H_{2} O$
5027	Find the Oxidation Numbers	OCl_2	$O C l_{2}$
5028	Find the Oxidation Numbers	Fe(C_2H_3O_2)	$F e (C_{2} H_{3} O_{2})$
5029	Find the Density at STP	2molH_2O	$2$ mol $H_{2} O$
5030	Find the Density at STP	B_2H_6	$B_{2} H_{6}$
5031	Find the Density at STP	BeAuTi	$B e A u T i$
5032	Find the Density at STP	Bh	$B h$
5033	Find the Density at STP	SgSiBH	$S g S i B H$
5034	Find the Density at STP	CuCl_2	$C u C l_{2}$
5035	Find the Density at STP	NaHCO_3	$N a H C O_{3}$
5036	Find the Density at STP	NaK	$N a K$
5037	Find the Oxidation Numbers	CrBr_3	$C r B r_{3}$
5038	Find the Oxidation Numbers	Ca_4C_2	$C a_{4} C_{2}$
5039	Find the Oxidation Numbers	CaO	$C a O$
5040	Find the Oxidation Numbers	CaOH	$C a O H$
5041	Find the Oxidation Numbers	Al(NO_3)_3	$A l {(N O_{3})}_{3}$
5042	Find the Oxidation Numbers	AlH_3	$A l H_{3}$
5043	Find the Oxidation Numbers	As_2O_3	$A s_{2} O_{3}$
5044	Find the Oxidation Numbers	Ba_2XeO_6	$B a_{2} X e O_{6}$
5045	Find the Oxidation Numbers	C_2H_7O_6	$C_{2} H_{7} O_{6}$
5046	Find the Oxidation Numbers	3CO_2	$3 C O_{2}$
5047	Find the Oxidation Numbers	KBrO_3	$K B r O_{3}$
5048	Find the Oxidation Numbers	KI_2	$K I_{2}$
5049	Find the Oxidation Numbers	LiCu	$L i C u$
5050	Find the Oxidation Numbers	LiH	$L i H$
5051	Find the Oxidation Numbers	Mn(CrO_4)_2	$M n {(C r O_{4})}_{2}$
5052	Find the Oxidation Numbers	Mn_2Ti	$M n_{2} T i$
5053	Find the Oxidation Numbers	H_2MnO_3	$H_{2} M n O_{3}$
5054	Find the Oxidation Numbers	H_3PO_3	$H_{3} P O_{3}$
5055	Find the Oxidation Numbers	IO_3	$I O_{3}$
5056	Find the Oxidation Numbers	Na_2Cr_6	$N a_{2} C r_{6}$
5057	Find the Oxidation Numbers	NaCl+KNO_3	$N a C l + K N O_{3}$
5058	Balance	H_2(g)+O_2(g)→H_2O(g)	$H_{2} (g) + O_{2} (g) \to H_{2} O (g)$
5059	Balance	H_2+O_2→H_2O_9	$H_{2} + O_{2} \to H_{2} O_{9}$
5060	Balance	HCl+Ca→HCl+Ca	$H C l + C a \to H C l + C a$
5061	Balance	HCl+NH_3→NH_4Cl	$H C l + N H_{3} \to N H_{4} C l$
5062	Balance	K+S_8→K_2S	$K + S_{8} \to K_{2} S$
5063	Balance	KClO_3→O_2+Cl	$K C l O_{3} \to O_{2} + C l$
5064	Balance	KClO_3→O_2+KCl	$K C l O_{3} \to O_{2} + K C l$
5065	Balance	KMnO_4+KCl+H_2SO_4=MnSO_4+K_2SO_4+H_2O+Cl_2	$K M n O_{4} + K C l + H_{2} S O_{4} = M n S O_{4} + K_{2} S O_{4} + H_{2} O + C l_{2}$
5066	Balance	KMnO_4+NaClO_2+H_2O→MnO_2+NaClO_4+KOH	$K M n O_{4} + N a C l O_{2} + H_{2} O \to M n O_{2} + N a C l O_{4} + K O H$
5067	Balance	KNO_3+Cr_2(SO_4)_3+Na_2CO_3→KNO_2+Na_2CrO_4+Na_2SO_4+CO_2	$K N O_{3} + C r_{2} {(S O_{4})}_{3} + N a_{2} C O_{3} \to K N O_{2} + N a_{2} C r O_{4} + N a_{2} S O_{4} + C O_{2}$
5068	Balance	Li+O_2=Li_2O	$L i + O_{2} = L i_{2} O$
5069	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(mmHg)(P(He))=200(mm)Hg	Determine $(t h e) (t o t a l) (p r e s s u r e) (o f) a (g a s) (mi x t u r e) (t h a t) (c o n t a i n s) (o x y g e n) (n i t r o g e n a n d h e l i u m) (i f) (t h e) (p r e s s u r e s) (o f) (t h e) (g a s s e s) (a r e) : P (O) = 150 mm H g (P (N)) = 350 (mm H g) (P (H e)) = 200 mm H g$
5070	Find the Unknown in the Combined Gas Law	h=-16{t}<E>{2}<e>+V_0T+S_0	$h = - 16 {t} < E > {2} < e > V_{0} T + S_{0}$
5071	Find the Unknown in the Combined Gas Law	I=30P=100T=6	$I = 30 P = 100 T = 6$
5072	Find the Number of Molecules	0.460g of P_2O_5	$0.46 g$ of $P_{2} O_{5}$
5073	Find the Number of Molecules	1.194kg(usin(g))(two)(significant)(numbers)	$1.194 kg (u \sin (g)) (t w o) (s i g n i f i c a n t) (n u m b e r s)$
5074	Balance	PH=- log of 1.05*10	$P H = - \log (1.05 \cdot 10)$
5075	Balance	Sb+Be→2V	$S b + B e \to 2 V$
5076	Balance	Si+O_2=SiO_2	$S i + O_{2} = S i O_{2}$
5077	Balance	V_2O_5+KI+HCl→V_2O_4+KCl+I_2+H_2O	$V_{2} O_{5} + K I + H C l \to V_{2} O_{4} + K C l + I_{2} + H_{2} O$
5078	Balance	Zn+AgNO_3=Ag+Zn(NO_3)_2	$Z n + A g N O_{3} = A g + Z n {(N O_{3})}_{2}$
5079	Balance	zn+h_2o→zh+o_2	$z n + h_{2} o \to z h + o_{2}$
5080	Balance	MnO+PbO_2+HNO_3→HMnO_4+Pb(NO_3)_2+H_2O	$M n O + P b O_{2} + H N O_{3} \to H M n O_{4} + P b {(N O_{3})}_{2} + H_{2} O$
5081	Balance	MnSO_4+KIO_4+H_2O→HMnO_4+KIO_3+H_2SO_4	$M n S O_{4} + K I O_{4} + H_{2} O \to H M n O_{4} + K I O_{3} + H_{2} S O_{4}$
5082	Find the Number of Molecules	2.1 gNi (0.29g)O	$2.1$ gNi $(0.29 g) O$
5083	Find the Number of Molecules	How (many)(iron)(atoms)(are)(contained) in (354g)(of)(iron)	How $(m a n y) (i r o n) (a t o m s) (a r e) (c o n t a i n e d)$ in $(354 g) (o f) (i r o n)$
5084	Find the Number of Molecules	Mg+2HCL→MgCL_2+H_2 if 15g of HCL reacts find the mass in g of Mg that reacts	$M g + 2 H C L \to M g C L_{2} + H_{2}$ if $15 g$ of $H C L$ reacts find the mass in $g$ of $M g$ that reacts
5085	Find the Number of Molecules	volume (of)(660000gal)	volume $(o f) (660000 gal)$
5086	Find the Number of Molecules	volume (that)(44g)(of)(carbon)(monoxide)(gas)(occupies)(at)(StP)	volume $(t h a t) (44 g) (o f) (c a r b o n) (m o n o x i d e) (g a s) (o c c u π e s) (a t) (S t P)$
5087	Add	1+14+32+2+59+12+1	$1 + 14 + 32 + 2 + 59 + 12 + 1$
5088	Add	1000+1000	$1000 + 1000$
5089	Add	-11+7	$- 11 + 7$
5090	Add	12.01+16+16	$12.01 + 16 + 16$
5091	Add	12.67+13.005	$12.67 + 13.005$
5092	Add	-16*0+4(0)+240	$- 16 \cdot 0 + 4 (0) + 240$
5093	Add	1738+1738	$1738 + 1738$
5094	Add	2(2)+10	$2 (2) + 10$
5095	Add	2(-4)+10	$2 (- 4) + 10$
5096	Add	2.01+0.123	$2.01 + 0.123$
5097	Add	2.35+2.45+7.23	$2.35 + 2.45 + 7.23$
5098	Add	23.22+10.632	$23.22 + 10.632$
5099	Add	492+486	$492 + 486$
5100	Add	89+273	$89 + 273$