Mathway | Popular Problems

Popular Problems

Rank	Topic	Problem	Formatted Problem
2101	Balance	AB+CD_2→AD+CB_2	$A B + C D_{2} \to A D + C B_{2}$
2102	Balance	AgNO_3+Na_2SO_4→Ag_2SO_4+Na_2(NO_3)_2	$A g N O_{3} + N a_{2} S O_{4} \to A g_{2} S O_{4} + N a_{2} {(N O_{3})}_{2}$
2103	Balance	V_2O_5+Ca→CaO+V	$V_{2} O_{5} + C a \to C a O + V$
2104	Balance	V_2O_5+HCl→VOCl_3+H_2O	$V_{2} O_{5} + H C l \to V O C l_{3} + H_{2} O$
2105	Balance	Al(NO_3)_3+H_2SO_4→Al_2(SO_4)_3+HNO_3	$A l {(N O_{3})}_{3} + H_{2} S O_{4} \to A l_{2} {(S O_{4})}_{3} + H N O_{3}$
2106	Balance	CaCO_3+HCI→CaCl_2+CO_2+H_2O	$C a C O_{3} + H C I \to C a C l_{2} + C O_{2} + H_{2} O$
2107	Balance	CaCO_3+HCl→CaCl_2+CO_2+H_2O	$C a C O_{3} + H C l \to C a C l_{2} + C O_{2} + H_{2} O$
2108	Balance	CaO+H_2O→Ca(OH)_2	$C a O + H_{2} O \to C a {(O H)}_{2}$
2109	Balance	Cl_2+NaOH→NaCl+NaClO_3+H_2O	$C l_{2} + N a O H \to N a C l + N a C l O_{3} + H_{2} O$
2110	Balance	Cr(CO_3)+NaOH=Cr(OH)_2+Na_2(CO_3)	$C r (C O_{3}) + N a O H = C r {(O H)}_{2} + N a_{2} (C O_{3})$
2111	Balance	Ag+S→Ag_2S	$A g + S \to A g_{2} S$
2112	Balance	Be+Al=2Be	$B e + A l = 2 B e$
2113	Balance	y=8x	$y = 8 x$
2114	Balance	C_4H_6+O_2→CO_2+H_2O	$C_{4} H_{6} + O_{2} \to C O_{2} + H_{2} O$
2115	Balance	y=a+bx	$y = a + b x$
2116	Balance	C_2H_4+3O_2→2CO_2+2H_2O	$C_{2} H_{4} + 3 O_{2} \to 2 C O_{2} + 2 H_{2} O$
2117	Balance	C_2H_8N_2+N_2O_4→N_2+CO_2+H_2O	$C_{2} H_{8} N_{2} + N_{2} O_{4} \to N_{2} + C O_{2} + H_{2} O$
2118	Balance	C_6H_14+C_8H_18+O_2→CO_2+H_2O	$C_{6} H_{14} + C_{8} H_{18} + O_{2} \to C O_{2} + H_{2} O$
2119	Balance	SO_3+Co(OH)_2→Co+SO_4	$S O_{3} + C o {(O H)}_{2} \to C o + S O_{4}$
2120	Balance	SO_2→H_2SO_4	$S O_{2} \to H_{2} S O_{4}$
2121	Balance	SO_2+Cl_2+H_2O→H_2SO_4+HCl	$S O_{2} + C l_{2} + H_{2} O \to H_{2} S O_{4} + H C l$
2122	Balance	SO_2+Li_2Se→SSe_2+Li_2O	$S O_{2} + L i_{2} S e \to S S e_{2} + L i_{2} O$
2123	Balance	Zn(NO_3)_2+NH_4Br→ZnBr_2(NH_4)NO_3	$Z n {(N O_{3})}_{2} + N H_{4} B r \to Z n B r_{2} (N H_{4}) N O_{3}$
2124	Balance	zn(oh)_2+h_3po_4→zn_3(po_4)_2+h_2o	$z n {(o h)}_{2} + h_{3} p o_{4} \to z n_{3} {(p o_{4})}_{2} + h_{2} o$
2125	Balance	zn_2+HCl→Zn_2Cl+H_2	$z n_{2} + H C l \to Z n_{2} C l + H_{2}$
2126	Balance	Zn+10HNO_3→Zn(NO_3)_2+NH_4+H_2O	$Z n + 10 H N O_{3} \to Z n {(N O_{3})}_{2} + N H_{4} + H_{2} O$
2127	Balance	Zn+AgCl=ZnCl_2+Ag	$Z n + A g C l = Z n C l_{2} + A g$
2128	Balance	Zn+AgNO_3→Ag+Zn(NO_3)_2	$Z n + A g N O_{3} \to A g + Z n {(N O_{3})}_{2}$
2129	Balance	Zn+HCl→H_2+ZnCl	$Z n + H C l \to H_{2} + Z n C l$
2130	Balance	Zn+HCl→ZnCl_2+zH_2	$Z n + H C l \to Z n C l_{2} + z H_{2}$
2131	Balance	C→CH_4	$C \to C H_{4}$
2132	Balance	Zn+Pb(NO_3)_2→Pb+Zn(NO_3)_2	$Z n + P b {(N O_{3})}_{2} \to P b + Z n {(N O_{3})}_{2}$
2133	Balance	Zn+Pb(NO_3)_2→Zn(NO_3)_2+Pb	$Z n + P b {(N O_{3})}_{2} \to Z n {(N O_{3})}_{2} + P b$
2134	Balance	Zn+HCI→ZnCI_2+H_2	$Z n + H C I \to Z n C I_{2} + H_{2}$
2135	Balance	Zn+CuSO_4→ZnSO_4+Cu	$Z n + C u S O_{4} \to Z n S O_{4} + C u$
2136	Balance	Zn+Cu_2NO_3→Z(nN)O_3+Cu	$Z n + C u_{2} N O_{3} \to Z n N O_{3} + C u$
2137	Balance	SO_2=H_2SO_4	$S O_{2} = H_{2} S O_{4}$
2138	Balance	write the net ionic equation for PH_3(aq)+HCl(aq)→PH_4Cl	write the net ionic equation for $P H_{3} (a q) + H C l (a q) \to P H_{4} C l$
2139	Balance	C_8H_16(I)+O_2(g)→CO_2(g)+H_2O(g)	$C_{8} H_{16} (I) + O_{2} (g) \to C O_{2} (g) + H_{2} O (g)$
2140	Balance	Al+FeO→Fe+Al_2O_3	$A l + F e O \to F e + A l_{2} O_{3}$
2141	Balance	x+y=x	$x + y = x$
2142	Balance	C_2H_5NH_2+O_2→CO_2+H_2O+N_2	$C_{2} H_{5} N H_{2} + O_{2} \to C O_{2} + H_{2} O + N_{2}$
2143	Balance	Ba(NO_3)_2+Na_2SO_4→BaSO_4+NaNO_3	$B a {(N O_{3})}_{2} + N a_{2} S O_{4} \to B a S O_{4} + N a N O_{3}$
2144	Balance	x=(4.18)(10.9)(57.2)	$x = (4.18) (10.9) (57.2)$
2145	Balance	Ba(OH)_2+HF→BaF_2+H_2O	$B a {(O H)}_{2} + H F \to B a F_{2} + H_{2} O$
2146	Balance	Cl_2O_7+H_2O→HClO_4	$C l_{2} O_{7} + H_{2} O \to H C l O_{4}$
2147	Balance	ch_4+o_2=co_4+h_2o	$c h_{4} + o_{2} = c o_{4} + h_{2} o$
2148	Balance	Ca_3P_2+H_2O→Ca(OH)_2+PH_3	$C a_{3} P_{2} + H_{2} O \to C a {(O H)}_{2} + P H_{3}$
2149	Balance	CH_3OH+O_2→CH_2O+H_2O	$C H_{3} O H + O_{2} \to C H_{2} O + H_{2} O$
2150	Balance	H_2SO_4+NH_4F=HF+(NH_4)_2SO_4	$H_{2} S O_{4} + N H_{4} F = H F + {(N H_{4})}_{2} S O_{4}$
2151	Balance	ZnSO_4+Li_2CO_3→ZnCO_3+Li_2SO_4	$Z n S O_{4} + L i_{2} C O_{3} \to Z n C O_{3} + L i_{2} S O_{4}$
2152	Balance	ZnO+HCl=ZnCl_2+H_2O	$Z n O + H C l = Z n C l_{2} + H_{2} O$
2153	Balance	x_2+y_2→yx_3	$x_{2} + y_{2} \to y x_{3}$
2154	Balance	x-4y=-7TcRu	$x - 4 y = - 7 T c R u$
2155	Balance	Xe(g)+3F_2(g)→XeF_6(s)	$X e (g) + 3 F_{2} (g) \to X e F_{6} (s)$
2156	Balance	Xe+2F_2→x	$X e + 2 F_{2} \to x$
2157	Balance	Xe+F(2)→XeF(6)	$X e + F (2) \to X e F (6)$
2158	Balance	xy=x+z-32( log base 2 of 44)_33	$x y = x + z - 32 {(\log_{2} (44))}_{33}$
2159	Balance	Y→Cr	$Y \to C r$
2160	Balance	y=cos(2x)	$y = \cos (2 x)$
2161	Balance	P_4+NaOH+H_2O→PH_3+Na_2HPO_3	$P_{4} + N a O H + H_{2} O \to P H_{3} + N a_{2} H P O_{3}$
2162	Balance	NH_3+CuO→Cu+N_2+H_2O	$N H_{3} + C u O \to C u + N_{2} + H_{2} O$
2163	Balance	NH_3+NO_2→N_2+H_2O	$N H_{3} + N O_{2} \to N_{2} + H_{2} O$
2164	Balance	NH_3+OF→N_2+HF+H_2O	$N H_{3} + O F \to N_{2} + H F + H_{2} O$
2165	Balance	sodiumx (chlorine)=ebolium	sodiumx $(c h l o r i n e) =$ ebolium
2166	Balance	Sr(HCO_3)_2+Na_2CO_3→SrCO_3+NaHCO_3	$S r {(H C O_{3})}_{2} + N a_{2} C O_{3} \to S r C O_{3} + N a H C O_{3}$
2167	Balance	Sr+HNO_3→Sr(NO_3)_2+H_2	$S r + H N O_{3} \to S r {(N O_{3})}_{2} + H_{2}$
2168	Balance	SrCl_2+H_2SO_4→HCl+SrSO_4	$S r C l_{2} + H_{2} S O_{4} \to H C l + S r S O_{4}$
2169	Balance	SrCl_2+LiPO_4→Sr_3(PO_4)_2+LiCl	$S r C l_{2} + L i P O_{4} \to S r_{3} {(P O_{4})}_{2} + L i C l$
2170	Balance	Mg+O_2→2MgO	$M g + O_{2} \to 2 M g O$
2171	Balance	Na_3PO_4+Mg(NO_3)_2→Mg_3(PO_4)_2+NaNO_3	$N a_{3} P O_{4} + M g {(N O_{3})}_{2} \to M g_{3} {(P O_{4})}_{2} + N a N O_{3}$
2172	Balance	Na+CL_2=NaCL	$N a + C L_{2} =$ NaCL
2173	Balance	tan(2x)=3tan(x)	$\tan (2 x) = 3 \tan (x)$
2174	Balance	tan(x)=-6.0147	$\tan (x) = - 6.0147$
2175	Balance	Sm→Ti	$S m \to T i$
2176	Balance	Sn(NO_2)_4+Pt_3N_4→Sn_3N_4+Pt(NO_2)_4	$S n {(N O_{2})}_{4} + P t_{3} N_{4} \to S n_{3} N_{4} + P t {(N O_{2})}_{4}$
2177	Balance	NaCl+BeF_2→NaF+BeCl_2	$N a C l + B e F_{2} \to N a F + B e C l_{2}$
2178	Balance	SO_2+H_2O+CaS→Ca(OH)_2+S	$S O_{2} + H_{2} O + C a S \to C a {(O H)}_{2} + S$
2179	Balance	SO_2+H_2S→H_2O+S_8	$S O_{2} + H_{2} S \to H_{2} O + S_{8}$
2180	Balance	SO_2+H_2S→S+H_2O	$S O_{2} + H_{2} S \to S + H_{2} O$
2181	Balance	S+HNO_3=H_2SO_4+NO+H_2O	$S + H N O_{3} = H_{2} S O_{4} + N O + H_{2} O$
2182	Balance	S+O_2→S_3O_2	$S + O_{2} \to S_{3} O_{2}$
2183	Balance	Li+H_2O=LIOH+H_2	$L i + H_{2} O = L I O H + H_{2}$
2184	Balance	SiCl_4+Mg→MgCl_2+Si	$S i C l_{4} + M g \to M g C l_{2} + S i$
2185	Balance	SiCl_4+2H_2O→SiO_2+4HC	$S i C l_{4} + 2 H_{2} O \to S i O_{2} + 4 H C$
2186	Balance	SiCl_4+H_2O→H_4SiO_4	$S i C l_{4} + H_{2} O \to H_{4} S i O_{4}$
2187	Balance	SiCl_4+H_2O→H_4SiO_4+HCl	$S i C l_{4} + H_{2} O \to H_{4} S i O_{4} + H C l$
2188	Balance	SiH_3+O_2→SiO_2+H_2O_3	$S i H_{3} + O_{2} \to S i O_{2} + H_{2} O_{3}$
2189	Balance	sin(x)=cos(x+38)	$\sin (x) = \cos (x + 38)$
2190	Balance	HClO_4+Ba(OH)_2→Ba(ClO_4)+H(OH)	$H C l O_{4} + B a {(O H)}_{2} \to B a (C l O_{4}) + H (O H)$
2191	Balance	SiO_2+C→Si+CO	$S i O_{2} + C \to S i + C O$
2192	Balance	S_8+O_2=SO_2	$S_{8} + O_{2} = S O_{2}$
2193	Balance	S_8+O_2=SO_3	$S_{8} + O_{2} = S O_{3}$
2194	Balance	Sb_2S_3+Fe→Sb+FeS	$S b_{2} S_{3} + F e \to S b + F e S$
2195	Balance	Sb+Cl_2→SbCl_3	$S b + C l_{2} \to S b C l_{3}$
2196	Balance	Sb+O_2→Sb_2O_5	$S b + O_{2} \to S b_{2} O_{5}$
2197	Balance	Sc→2Sc	$S c \to 2 S c$
2198	Balance	ScNa→2(ScCa)	$S c N a \to 2 (S c C a)$
2199	Balance	Si+2Cl_2=SiCl_4	$S i + 2 C l_{2} = S i C l_{4}$
2200	Balance	Si+C→SiC	$S i + C \to S i C$