Mathway | 热门问题

热门问题

等级	主题	问题	格式化的问题
2601	求pH（酸碱）值	0.76MH_2SO_4 solution	$0.76 M H_{2} S O_{4}$ solution
2602	平衡	Mg+NHO_3=Mg(NO_3)_2+N_2O+H_2O	$M g + N H O_{3} = M g {(N O_{3})}_{2} + N_{2} O + H_{2} O$
2603	求pH（酸碱）值	What (is)(the)(pH)(of)a(solution)(that)(has)(an)(acid)(concentration)(of)*0.00055(Molar)	What $(i s) (t h e) (p H) (o f) a (s o l u t i o n) (t h a t) (h a s) (a n) (a c i d) (c o n c e n t r a t i o n) (o f) \cdot 0.00055 (M o l a r)$
2604	求pH（酸碱）值	what (volume)(of)a(1.50M)(HCl)(solution)(should)(you)(use)(to)(prepare)(2.00L)(of)a*0.00M(HCl)(sokytion)	what $(v o l u m e) (o f) a (1.5 M) (H C l) (s o l u t i o n) (s h o u l d) (y o u) (u s e) (t o) (p r e p a r e) (2 L) (o f) a \cdot 0 M (H C l) (s o k y t i o n)$
2605	求pH（酸碱）值	0.2MC_2H_5NH_2 solution	$0.2 M C_{2} H_{5} N H_{2}$ solution
2606	求pH（酸碱）值	0.34MNH_4nH solution	$0.34 M N H_{4} n H$ solution
2607	求pH（酸碱）值	0.4MC_3H_5n_2NH_2 solution	$0.4 M C_{3} H_{5} n_{2} N H_{2}$ solution
2608	求出质子数量	Ag	$A g$
2609	平衡	MnO_2+KClO_3+KOH→K_2MnO_4+KCl+H_2O	$M n O_{2} + K C l O_{3} + K O H \to K_{2} M n O_{4} + K C l + H_{2} O$
2610	平衡	0.30x+0.75y=0.57(100)	$0.3 x + 0.75 y = 0.57 (100)$
2611	求出摩尔数	How many mol of KMnn_4 are in 9L of 4.96M solution	How many moles of $K M n n_{4}$ are in $9 L$ of $4.96 M$ solution
2612	求出摩尔数	How (many)(mol)(of)(NaOH)(are) in (0.0105L)(of)(0.15M)(solution)	How $(m a n y) (m o l e s) (o f) (N a O H) (a r e)$ in $(0.0105 L) (o f) (0.15 M) (s o l u t i o n)$
2613	求出摩尔数	How many mol of MgO are produced when 7.2mol of O_2 react with excess Mg	How many moles of $M g O$ are produced when $7.2$ mole of $O_{2}$ react with excess $M g$
2614	求出摩尔数	How (many)(mol)(of)(KCl)(are) in (10L)(of)(4.86M)(solution)	How $(m a n y) (m o l e s) (o f) (K C l) (a r e)$ in $(10 L) (o f) (4.86 M) (s o l u t i o n)$
2615	求出质量百分比	C_2H_20NCl_3Br_5	$C_{2} H_{20} N C l_{3} B r_{5}$
2616	求出质子数量	Sc	$S c$
2617	求出原子质量	56+96Mg	$56 + 96 M g$
2618	求出原子质量	Co	$C o$
2619	求出原子质量	0.02 molsMg	$0.02$ molsMg
2620	求出原子质量	Cd	$C d$
2621	求出原子质量	11.9(g)Al	$11.9 (g) A l$
2622	求出原子质量	14.2(mol)(of)Ba	$14.2 (m o l e s) (o f) B a$
2623	求出原子质量	2.50(mol)(of)He	$2.5 (m o l) (o f) H e$
2624	求出原子质量	2Ag	$2 A g$
2625	求出原子质量	2Mg	$2 M g$
2626	求出原子质量	4Mo	$4 M o$
2627	求出原子质量	4Ni	$4 N i$
2628	求出原子质量	Sn	$S n$
2629	求出原子质量	Ar	$A r$
2630	求出原子质量	68Sn	$68 S n$
2631	求出原子质量	749mmHg(air)(pressure)	$749 mm H g (a i r) (p r e s s u r e)$
2632	求出浓度	If (you)(have)210.3(g)(of)(an)(unknown)(comlb)(that)(contain)12.3(g)(of)(hydrogen)(what)(is)(the)(percent)(by)(mass)(of)(hydrogen) in (the)(comlb)	If $(y o u) (h a v e) \cdot 210.3 (g) (o f) (a n) (u n k n o w n) (c o m lbs) (t h a t) (c o n t a i n s) \cdot 12.3 (g) (o f) (h yds r o g e n) (w h a t) (i s) (t h e) (p e r c e n t) (b y) (m a s s) (o f) (h yds r o g e n)$ in $(t h e) (c o m lbs)$
2633	求比热值	What (is)(the)(specific)(heat)(of)(the)(substan(ce))(if)(180cal)(increases)(the)(temperature)(of)(63g)(from)(40 次数 C)(to)(55 次数 C)	What $(i s) (t h e) (s p e c i f i c) (h e a t) (o f) (t h e) (s u b s \tan (c e)) (i f) (180 c a l) (i n c r e a s e s) (t h e) (t e m p e r a t u r e) (o f) (63 g) (f r o m) (40 ° C) (t o) (55 ° C)$
2634	平衡	Ca_3(PO_4)_2+SiO_2→CaSiO_3+P_4O_10	$C a_{3} {(P O_{4})}_{2} + S i O_{2} \to C a S i O_{3} + P_{4} O_{10}$
2635	求出质量百分比	H_2O_2	$H_{2} O_{2}$
2636	求出浓度	what (are)(the)(significant)(digits)in*13.00	what $(a r e) (t h e) (s i g n i f i c a n t) (d i g i t s) i n \cdot 13$
2637	求出原子质量	Bh	$B h$
2638	求出原子质量	Br	$B r$
2639	求出原子质量	calculate (the)(mass)(of)9.37(times)10-3molMg	calculate $(t h e) (m a s s) (o f) \cdot 9.37 (t i m e s) \cdot 10 - 3 (m o l) M g$
2640	求出原子质量	Cf	$C f$
2641	求出标准温度和压力下的密度	LiCI	$L i C I$
2642	求出标准温度和压力下的密度	LiCl	$L i C l$
2643	求出标准温度和压力下的密度	Lr	$L r$
2644	求出标准温度和压力下的密度	MgCa	$M g C a$
2645	求出标准温度和压力下的密度	Mgn	$M g n$
2646	求出标准温度和压力下的密度	H_3PO_4	$H_{3} P O_{4}$
2647	求出标准温度和压力下的密度	hCl+H_2O	$h C l + H_{2} O$
2648	求出标准温度和压力下的密度	He	He
2649	求出标准温度和压力下的密度	HF	$H F$
2650	求出标准温度和压力下的密度	Hg	$H g$
2651	求出标准温度和压力下的密度	Hf	$H f$
2652	求出标准温度和压力下的密度	Ta	$T a$
2653	求出标准温度和压力下的密度	Rn	$R n$
2654	求出标准温度和压力下的密度	O_2	$O_{2}$
2655	求出标准温度和压力下的密度	PbO	$P b O$
2656	求出标准温度和压力下的密度	NaHSO_4	$N a H S O_{4}$
2657	求出标准温度和压力下的密度	NbBh	$N b B h$
2658	求出标准温度和压力下的密度	NH	$N H$
2659	求出分压（道尔顿氏定律）	183mm , 76% of Cn_2 , 67% of n_2 , 73% of Cl_2	$183 mm$ , $76 %$ of $C n_{2}$ , $67 %$ of $n_{2}$ , $73 %$ of $C l_{2}$
2660	求出分压（道尔顿氏定律）	628mm , 86% of Cn_2 , 87% of n_2 , 58% of Cl_2	$628 mm$ , $86 %$ of $C n_{2}$ , $87 %$ of $n_{2}$ , $58 %$ of $C l_{2}$
2661	求pH（酸碱）值	0.12MH(C_2H_3O_2) solution	$0.12 M H (C_{2} H_{3} O_{2})$ solution
2662	求出热需要量	How (much)(heat)(is)(needed)(to)(warm)(44g)(of)(water)(from)(20 次数 C)(to)(30 次数 C)	How $(m u c h) (h e a t) (i s) (n e e d e d) (t o) (w a r m) (44 g) (o f) (w a t e r) (f r o m) (20 ° C) (t o) (30 ° C)$
2663	求比热值	What (is)(the)(specific)(heat)(of)(the)(substan(ce))(if)(320cal)(increases)(the)(temperature)(of)(75g)(from)(10 次数 C)(to)(25 次数 C)	What $(i s) (t h e) (s p e c i f i c) (h e a t) (o f) (t h e) (s u b s \tan (c e)) (i f) (320 c a l) (i n c r e a s e s) (t h e) (t e m p e r a t u r e) (o f) (75 g) (f r o m) (10 ° C) (t o) (25 ° C)$
2664	求比热值	What (is)(the)(spiecific)(heat)(of)(the)e(if)(230cal)(increases)(the)(tempierature)(of)(67g)(from)(25oC)(to)(35oC)	What $(i s) (t h e) (s π e c i f i c) (h e a t) (o f) (t h e) e (i f) (230 c a l) (i n c r e a s e s) (t h e) (t e m π e r a t u r e) (o f) (67 g) (f r o m) (25 o C) (t o) (35 o C)$
2665	求比热值	What (is)(the)(spiecific)(heat)(of)(the)(subsce)(if)(270cal)(increases)(the)(tempierature)(of)(28g)(from)(10 次数 C)(to)(20 次数 C)	What $(i s) (t h e) (s π e c i f i c) (h e a t) (o f) (t h e) (s u b s c e) (i f) (270 c a l) (i n c r e a s e s) (t h e) (t e m π e r a t u r e) (o f) (28 g) (f r o m) (10 ° C) (t o) (20 ° C)$
2666	求比热值	What (is)(the)(specific)(heat)(of)(the)(substan(ce))(if)(365cal)(increases)(the)(temperature)(of)(62g)(from)(25 次数 C)(to)(40 次数 C)	What $(i s) (t h e) (s p e c i f i c) (h e a t) (o f) (t h e) (s u b s \tan (c e)) (i f) (365 c a l) (i n c r e a s e s) (t h e) (t e m p e r a t u r e) (o f) (62 g) (f r o m) (25 ° C) (t o) (40 ° C)$
2667	求比热值	What (is)(the)(spiecific)(heat)(of)(the)(substan(c)e)(if)(180cal)(increases)(the)(tempierature)(of)(63g)(from)(40 次数 C)(to)(55 次数 C)	What $(i s) (t h e) (s π e c i f i c) (h e a t) (o f) (t h e) (s u b s \tan (c) e) (i f) (180 c a l) (i n c r e a s e s) (t h e) (t e m π e r a t u r e) (o f) (63 g) (f r o m) (40 ° C) (t o) (55 ° C)$
2668	平衡	FeS_2+Na_2O_2=Fe_2O_3+Na_2SO_4+Na_2O	$F e S_{2} + N a_{2} O_{2} = F e_{2} O_{3} + N a_{2} S O_{4} + N a_{2} O$
2669	求pH（酸碱）值	0.1MNa_3PO_4 solution	$0.1 M N a_{3} P O_{4}$ solution
2670	求出标准温度和压力下的密度	TcEs	$T c E s$
2671	求出标准温度和压力下的密度	Ti	$T i$
2672	求出质子数量	Ni	$N i$
2673	求pH（酸碱）值	an (aqueous)(solution)(is)(labeled)(as)*0.25m(NaCL)	an $(a q u e o u s) (s o l u t i o n) (i s) (l a b e l e d) (a s) \cdot 0.25 m (N a C L)$
2674	求pH（酸碱）值	Calculate (the)(pH)(of)a(buffer)(solution)(that)(contain)0.25M(benzoic)(acidand0.15M)(sodium)(benzoate)	Calculate $(t h e) (p H) (o f) a (b u f f e r) (s o l u t i o n) (t h a t) (c o n t a i n s) \cdot 0.25 M (b e n z o i c) (a c i d a n d \cdot 0.15 M) (s o d i u m) (b e n z o a t e)$
2675	求pH（酸碱）值	Calculate (the)(pH)(of)a(solution)(of)(4.0M)(HF)	Calculate $(t h e) (p H) (o f) a (s o l u t i o n) (o f) (4 M) (H F)$
2676	求pH（酸碱）值	Determine the pH of a*0.40MCH_2CO_2H solution	Determine the $p H$ of $a \cdot 0.4 M C H_{2} C O_{2} H$ solution
2677	求pH（酸碱）值	Determine the pH of a*0.40MCH_3CO_2H solution	Determine the $p H$ of $a \cdot 0.4 M C H_{3} C O_{2} H$ solution
2678	求pH（酸碱）值	Determine the pOH of a*0.0034MHNO_3 solutions.	Determine the pOH of $a \cdot 0.0034 M H N O_{3}$ solutions.
2679	求pH（酸碱）值	H_2O solution	$H_{2} O$ solution
2680	求pH（酸碱）值	what (is)(the)(molarity)(of)a(solution)(tha)(contain)28(g)(of)(KOH)in2L(of)(water)	what $(i s) (t h e) (m o l a r i t y) (o f) a (s o l u t i o n) (t h a) (c o n t a i n s) \cdot 28 (g) (o f) (K O H) i n \cdot 2 L (o f) (w a t e r)$
2681	求pH（酸碱）值	How (many)(gal)(of)(distilled)(water)(must)(be)(mixed)*50(gal)(of)30%(alcohol)(solution)(to)(obtain)a25%(solution)	How $(m a n y) (gal) (o f) (d i s t i l l e d) (w a t e r) (μ s t) (b e) (mi x e d) \cdot 50 (gal) (o f) 30 % (a l c o h o l) (s o l u t i o n) (t o) (o b t a i n) a 25 % (s o l u t i o n)$
2682	求pH（酸碱）值	0.500MNH_3 solution	$0.5 M N H_{3}$ solution
2683	求pH（酸碱）值	0.64MH_3Bn_3 solution	$0.64 M H_{3} B n_{3}$ solution
2684	求pH（酸碱）值	0.76MH_2Sn_4 solution	$0.76 M H_{2} S n_{4}$ solution
2685	判断该化合物是否溶于水	HO	$H O$
2686	判断该化合物是否溶于水	HOH	$H O H$
2687	判断该化合物是否溶于水	HOO	$H O O$
2688	判断该化合物是否溶于水	IBr	$I B r$
2689	判断该化合物是否溶于水	K_2O	$K_{2} O$
2690	判断该化合物是否溶于水	K_3PO_4	$K_{3} P O_{4}$
2691	判断该化合物是否溶于水	KHO	$K H O$
2692	判断该化合物是否溶于水	MgF_2	$M g F_{2}$
2693	判断该化合物是否溶于水	Mn(OH)	$M n (O H)$
2694	判断该化合物是否溶于水	LiBr	$L i B r$
2695	判断该化合物是否溶于水	LiCl	$L i C l$
2696	判断该化合物是否溶于水	LiF	$L i F$
2697	判断该化合物是否溶于水	LiH	$L i H$
2698	判断该化合物是否溶于水	NaHCO_3	$N a H C O_{3}$
2699	判断该化合物是否溶于水	name the following compound Ca(NO_3)_2	name the following compound $C a {(N O_{3})}_{2}$
2700	判断该化合物是否溶于水	NaNo_3	$N a N o_{3}$