1. Chemisty

    How many milliliters of 5.50 M HCl must be diluted to make 350. mL of a 0.500 M solution?

    asked by Wyatt on April 10, 2012
  2. 12th grade chemistry

    How do I prepare 500 ml of a .100 mol/L solution of copper sulphate.

    asked by Kelsey on July 30, 2010
  3. Algebra

    I am having trouble with two problems. I can't seem to get a solid solution to either one of them. 3/y+5 + 6/7y add and simplify 5-r/8-r = 3/r-8 solve Can someone help me please? Thanks so much.

    asked by Aria on August 1, 2011
  4. Busniess

    what economic system iss the best solution in handling a crisis proportion?

    asked by Tali on January 12, 2011
  5. Algebra 2

    The point (4, 1) is a solution to which of the following systems of inequalities? a. y < 3x - 1 and y > -x + 1 b. y > 3x - 1 and y > -x + 1 c. y > 3x - 1 and y < -x + 1 d. y < 3x - 1 and y < -x + 1 I'm very confused:( I don't know how to solve this. Please

    asked by Fading on January 16, 2017
  6. Chemistry

    The \rm p \it K_{\rm a} of this reaction is 4.2. In a 0.74\it M solution of benzoic acid, what percentage of the molecules are ionized?

    asked by Joe on February 21, 2013
  7. Chemistry

    Which solution has a higher vapor pressure, 1 M NaCl or 1 M glucose(C6H12O6)?

    asked by Joe on July 27, 2010
  8. Chemistry

    I'm having trouble balancing this equation: SO3^2- --> S2O4^2- It's in a basic solution. Thanks.

    asked by C on April 7, 2013
  9. chemistry

    What is the concentration of a solution, in gsolute/100gsolvent, made using 2.29 g of KNO3 in 2.03 g of H2O?

    asked by Anna on January 24, 2014
  10. AP Chemistry

    What is the pH of a 0.41 M solution of pyridinium chloride (C5H5NH+Cl−)? (Kb for pyridine is 1.5×10−9.) Answer in units of pH

    asked by Gabriella on January 24, 2014
  11. math advanced functions grade 12

    Find the solution set to the following rational inequality, 240/x+8 > 20x/x+1

    asked by illiah on July 24, 2012
  12. science

    How much water should be added to 55.0 mL of 0.201 M HCl to dilute the solution to 0.155 M?

    asked by Lauren on April 18, 2011
  13. science

    How to cal. The range of π+arcsin(3x-4x^3).give the whole solution step wise

    asked by RALLZO on October 3, 2015
  14. Science

    Why is that instantaneous rate of reaction does not change when a part of the reacting solution is taken out?

    asked by Vikrant on June 10, 2016
  15. geometry

    what is the solution to this problem? -2=2x^2-7x negative two equals two times "x" squared minus seven "x".

    asked by anonymous on September 22, 2008
  16. math

    7x-3y+4z=18 13x+6y+8z=30 11x-9y-12z=16 Find x,y,z please show the solution pleaseee

    asked by Jean on October 4, 2015
  17. chemistry

    how much concentrated 12 M hydrochloric acid is needed to prepare 100 mL of a 2.0 M solution?

    asked by dellanie on March 28, 2012
  18. Chemistry

    If 25.9 mL of 300 M NaCl is diluted to 136 mL, what is the molarity of the dilute solution?

    asked by Kimber on October 25, 2012
  19. chem

    How is the number of moles of NaOH affected at the equivalence point of the solution?

    asked by me on October 18, 2009
  20. Algebra

    Write the solution to the inequality in set builder notation. 9t - 4 > 32 My answer is (t I t > 4)

    asked by Faye on September 16, 2014
  21. chemistry

    I have 120 ml of a 2M NAOH solution. If Ionly use 10 ml the molarity of the 10 ml is stil 2M, correct?

    asked by anonymous on February 10, 2015
  22. chemistry

    If 39.2 of 0.177 is required to neutralize completely 22.0 solution, what is the molarity of the acid?

    asked by Ivy on May 7, 2011
  23. Algebra

    Can you please help? I am working System of Equations. I need to find the solution of each of the following systems: How do I solve...thank you Y = 5x -3 and Y = -3x +5

    asked by Jaraud on December 4, 2016
  24. math

    find general solution of y¡±-y¡¯=squre of sinx by variation parameter

    asked by amar on November 6, 2013
  25. Chemistry

    What voltage would be measured in a 1.00 x10-3M acetic acid solution (pH=3.88)? Assume aH+= [H+].

    asked by Glyn on October 21, 2014
  26. Chemistry

    If you want to prepare 2.0 liters of a .25 M solution of NH4Cl, how many grams of the salt should you weigh out?

    asked by J on November 29, 2015
  27. Chemistry

    If a box contain 256 water molecules and 1 Na+ ion , then what will be the Molarity of the solution.

    asked by Robin Jain on November 29, 2016
  28. math

    find the measure of an angle if it is 6 degree less than twice its complement with solution pls.

    asked by Sooyoung on January 13, 2015
  29. chemistry

    Why must thiosulfate solution be standarized every couple of days? Please explain with an equation. Thanks.

    asked by kalynn on January 30, 2012
  30. Science

    Preparation of M/20 oxalic acid solution and determine it strength. For practical

    asked by Piyush k. on December 27, 2018
  31. chemistry

    How many grams of water should be added to 25.0 g of NaCl to produce a 0.450 m solution?

    asked by CC on February 10, 2010
  32. science

    is dilution of a solution the answer to acid or base pollution in this world? why?

    asked by j on February 10, 2010
  33. ntc

    What is the solution using gauss jordan Elimination.. 2x-4y+5z=10 6x+8y+3z=12 X-7y-9z=63 Pls.help me to solve this problem

    asked by ella ramos on December 2, 2015
  34. algebra

    Solve this equation. Identify any extraneous solution. Show all steps. x = [3x + 40]

    asked by sharl on May 13, 2011
  35. Chemistry

    How many grams of HCl need to be dissolved in 0.5L of water to prepare a solution of pH 1.5? Does anybody know how to work this out? Thanks :)

    asked by Matt on February 13, 2013
  36. chemistry

    I have 50mL of0.2M of potassium permanganate solution.What is the Molarity of KMnO4?

    asked by linda on February 5, 2010
  37. Chem 1A

    Help please! How many moles of NaOH must be added to 1.0 L of 3.0 M HC2H3O2 to produce a solution buffered at each pH? 1) pH= 3.78 2) PH= 6.52

    asked by Mackenzie on March 15, 2012
  38. algebra

    is -2i square root of 2 a solution to x=8? lets check: (-2i sqrt 2)^2= -1^2 * 2^2 * i^2 *2 =-8 Answer: no.

    asked by Anonymous on November 8, 2006
  39. pysical science

    how do you find the density of a solution where the mass=60.75gms and the volume=45ml

    asked by len on May 12, 2011
  40. Math

    6x -5y =20 and 5y - 6x = -20 A) No Solution B) Infinity C) A Point Consistant or Inconsistant Depdendant or Independant

    asked by Susie on May 27, 2010
  41. Math

    Find the interval for b such thtat the equation has a t least one real solution. i. X^2+bx-6=0 ii. 2X^2+bx-7=0 iii. x^2+bx+3=0 iv. 3x^2+bx+5

    asked by Anonymous on January 19, 2015
  42. Science

    Solution of question The work done by the heart if it's beats 72times per minute

    asked by Muskaan Sachdev a on December 1, 2016
  43. math

    6x - 5y= 20 and 5y - 6x= -20 Is there a solution, infinity, A point Consistent or inconsistent dependent or independent

    asked by Susan on May 26, 2010
  44. Chemistry

    How many grams of HCl need to be dissolved in 0.5L of water to prepare a solution of pH 1.5? Does anybody know how to work this out? Thanks :)

    asked by Matt on February 13, 2013
  45. chemistry

    ewhat is the solubility of X in mol/dm3 if 25cm3 of its saturated solution contains 4.0g of X

    asked by emma4ever on March 15, 2012
  46. ALGEBRA

    what does it mean to state the solution in the problem if the equation is 2x^2-3x-4=0 (2x squared) and the graph is 2x^2-3x-4??? Can someone explain this to me?

    asked by ggift on September 10, 2009
  47. Math

    Use the substitution method to find solution sets (x,y) for the following systems of equations: 3x-5y=-11 6x+2y=26

    asked by Scott on June 20, 2009
  48. Cemistry

    Why do we have to heat KMnO4 solution when we have to do the titration with the oxalate ions for such reaction?

    asked by Tukana on May 18, 2010
  49. Chemistry

    What is the period 3 element whose 2+ ion is isoelectronic with neon? How can I find the solution? Thanks

    asked by Ceamus Angelina on April 6, 2018
  50. math

    solve the equations by finding the exact solution this is question from log 3=x-3

    asked by Andrzej on February 10, 2013
  51. Science

    Explain 2 reasons why salad dressing is not a solution I think one is it separates after a while of sitting is that right and I can't think of another

    asked by Hannah on February 12, 2010
  52. algebra

    for which values of a and b does the following pair of linear equation have an infinite number of solution ? 2x+3y=7 (a-b)x+(a+b)y=3a+b-2

    asked by somiya on July 16, 2012
  53. Biochemistry

    If you make up a solution of 100mL of 0.1 M Hepes in the basic form, what will be the pH? pKa = 7.55

    asked by Megan on September 8, 2014
  54. chemistry

    what is the molarity of the solution comtaining 2.5g of acetic acid in 75g of benzene

    asked by saira on April 7, 2016
  55. chemistry

    How much concentrated 12 M hydrochloric acid is needed to prepare 100.0 mL of a 2.0 M solution?

    asked by {RayRay} NEED HELP PLZ on May 11, 2010
  56. chem

    what is the ph of a solution in which 250.0 ml of .200 M HNO3 is added to 280.0 ml of .150 Ba(OH )

    asked by k on November 13, 2012
  57. chemistry

    Explain how to make a 1.5M solution of copper (II) sulfate with a volume of 250 mL.

    asked by valentina on February 6, 2011
  58. calculus

    Find the particular solution that satisfies the differential equation and the initial condition. f ''(x) = x^2, f '(0) = 8, f(0) = 8 f (x) = ?

    asked by Sam on April 7, 2016
  59. Algebra

    What is the solution of the linear-quadratic system of equations? {y = x^2 + 5x - 3 {y - x = 2 So confused about how to do this any help is appreciated.

    asked by Samantha Taylor Greenfield on November 22, 2013
  60. chemistry

    what is the pH of the solution formed when 25 mL of 0.173 M NaOH is added to 35 mL of 0.342 M HCl?

    asked by sarah on December 5, 2012
  61. Chemistry

    What pH is required to start precipitation of Fe(OH)3 from a 0.380 M solution of FeCl3? Ksp of Fe(OH)3 = 4.0e-29.

    asked by Pob on April 3, 2011
  62. Chemistry

    If I was to react a borax solution with a sulphuric acid to neutralise it, what products will I get?

    asked by Serre on January 1, 2009
  63. chemistry

    what is the molar solubility of Fe(OH)3 in a buffered solution with pH=8.2 at 25 degrees Celsius given ksp =4.0*10^-38.

    asked by cliff on December 4, 2015
  64. math

    Can someone please check my answers? Thank you! 1. is (-8,-9) a solution of 2x+4y=12 No 2. Solve using the multiplication principle. -1/2x=-9/10 answer: 9/5

    asked by deedra on January 5, 2009
  65. Chemistry

    The approximate pH of a 3.0 x 10-3 M solution of the strong acid H2SO4 is a) 3.5 b) 3.0 c) 2.5
 d) 2.2
 e) -3.0 i got C by -log(3.0e-3) is this correct?

    asked by Linda on March 14, 2012
  66. Math

    Use the given root to find the solution set of the polynomial equation. x^3 + 8x^2 -18x +20= 0 ; 1+i

    asked by Chelsea on February 1, 2012
  67. discrete math

    Find the solution to the following lhcc recurrence: an=3nan−1 for n2 with initial conditions a0=4.

    asked by cjones on April 20, 2012
  68. Chemisty

    How much KNO3 will you have to add to 100 g of water at 40° C to make a saturated solution?

    asked by Hannah on August 1, 2011
  69. chemistry

    Please I need help in knowing how to solve this. I know I need to take the antilog of something but don't know what.What is the values of [H3O+] for a solution with [OH−]=1×10−5M?

    asked by chelsea on November 22, 2013
  70. College algebra

    use interval notation to express the solution set of the inequality |2x + 3|> or equal to 9

    asked by Jess on February 1, 2012
  71. chemistry

    how many grams of ammonium sulfate are needed to make a .25 M solution at a concentration of 6M?

    asked by mora on May 11, 2010
  72. chemistry

    What is the molarity of a 28.9 g of CaCl2 dissolved in water to make up 0.78L of solution?

    asked by Anonymous on June 3, 2014
  73. Chemistry

    What is the molecular mass of a substance X if 1.00 L of a solution containing 4, 5 g of X has an osmolality of 0.337 mmHg the 30° C?

    asked by Caline on April 14, 2016
  74. chemistry

    How can you precipitate BaCrO4(s) from a solution of barium nitrate and potassium dichromate?

    asked by FB1907 on June 30, 2012
  75. chemistry

    Considering a 1.0M of each solution, which has the greatest osmolarity? 1. FeCl3 2. K2O 3. HCl 4. HC2H3O2

    asked by Gina on May 11, 2011
  76. chemistry

    what is the concentration, in % m/m of a solution prepared from 50.0g sodium chloride and 150.0g of water

    asked by tim on April 5, 2011
  77. Chemistry 1200

    0.238 M glucose (C6H12O6) in water (Assume the density of the solution is 1.00 g/mL.)

    asked by Rukky on January 25, 2011
  78. algebra

    Express your answers as simplifier, improper fraction if necessary [3(a+3)]=29 the solution set is { }

    asked by maribel on January 25, 2015
  79. algebra

    can someone please check my answer to this problem? solve for indicated letter. n=m+d, for m the solution is m= (n+d)/m is this correct?

    asked by Anonymous on September 26, 2009
  80. Chemistry

    How much water must be added to 24.0 grams of salt ot make a solution that is 12.0% by mass?

    asked by Beth on April 9, 2011
  81. Chemistry

    what is the molality of a solution prepared by dissolving 13.0 g of Ba(NO3)2 in 450 g of water?

    asked by Mad on April 17, 2012
  82. Business

    Which economic system is the best solution to handling a crisis of epic proportion?

    asked by Jay on June 16, 2010
  83. chemistry

    What is (a)PH(b) POH of a solution wholes hydrogen ion consentration is 5.00x10-4?

    asked by Anonymous on March 20, 2012
  84. calculus

    the equation cosx=x has a solution in what interval?...the answer is given as [0,pi/2] can someone please explain why?? thnks

    asked by sylvia on November 13, 2008
  85. Calculus I

    Using Newton's Method, determine the first approximation to the solution of: e^(4x)= 10-2x starting with x=0 what is x1= ??? P.S. ( the 1 is a subscript )

    asked by Matthew on April 8, 2011
  86. social studies

    A _______ uses metal plates and a conducting solution to produce current

    asked by nerd nada on June 1, 2010
  87. Chemistry

    How many grams of Mg are needed to react completely with 3.80 L of a 2.50 M HF solution? Mg + 2HF --> MgF^2 + H^2

    asked by Lexa on April 6, 2011
  88. Chemistry

    How many grams of NaF should be added to 612 ml of 0.4 M HF (Ka = 6.8 x 10-4) to produce a buffer solution where pH = 3.10?

    asked by Ashley on April 12, 2013
  89. Science

    Why is that instantaneous rate of reaction does not change when a part of the reacting solution is taken out?

    asked by Sheba on September 14, 2009
  90. Can someone help me Math problem!!

    Determine whether the ordered pair is a solution of the linear inequality. 9)x5x-12;(-6,1) Can someone help me with these two question please!!?

    asked by that emo girl! on January 29, 2018
  91. Gaussian Elimination Method

    Write the system of equations as an augmented matrix. Then solve for x and y. -3x-y=11 -9x-2y=34 Solution =

    asked by Devin on December 15, 2016
  92. Chemistry

    What is the concentration of a solution which contains 1 mole of CaCl2 dissolved in 2000mL of solutions?

    asked by KT on June 1, 2010
  93. mathes for management

    Use gauss Jordan elimination method to find solution set of 4x+5y+3z=23 3x+2y+z=10 2x+5y-z=9

    asked by legesse on December 13, 2016
  94. 8th grade

    Why the Virginia Plan wasn't a suitable solution to the problem of representation?

    asked by justina on November 13, 2008
  95. physics

    What is the concentration (in g/100ml ) of a solution which has 2,8g of NaCI dissolved into 88.0ml of water?

    asked by keria on January 20, 2012
  96. Chemistry

    What is [H+], [OH-], pH, and pOH for a 0.048mol/L solution of the weak benzoic acid, C6H5COOH?

    asked by Vader on December 9, 2013
  97. Science/Chemistry

    please help... What is the molarity of 3.68mL of a solution containing 0.0025 moles of calcium chloride?

    asked by Fisher on March 21, 2012
  98. Math

    If the 4-digit number 4AB2 is divisible by 44, what are the values of A & B? (Solution pls...)

    asked by MNHS_HELP on January 26, 2015
  99. Chemistry

    How many milliliters water are needed to make a 0.171 M solution that contains 1.00 g of NaCl?

    asked by Rob on April 11, 2013
  100. Algebra

    Rational Expressions. 1.) 2x^2-8x 8x^2 _______ / ____ x^2-16 (x+4)^2 Solution: x+4 ___ x Is this correct?

    asked by Anonymous on September 23, 2009

Pages

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
  21. 21
  22. 22
  23. 23
  24. 24
  25. 25
  26. 26
  27. 27
  28. 28
  29. 29
  30. 30
  31. 31
  32. 32
  33. 33
  34. 34
  35. 35
  36. 36
  37. 37
  38. 38
  39. 39
  40. 40
  41. 41
  42. 42
  43. 43
  44. 44
  45. 45
  46. 46
  47. 47
  48. 48
  49. 49
  50. 50
  51. 51
  52. 52
  53. 53
  54. 54
  55. 55
  56. 56
  57. 57
  58. 58
  59. 59
  60. 60
  61. 61
  62. 62
  63. 63
  64. 64
  65. 65
  66. 66
  67. 67
  68. 68
  69. 69
  70. 70
  71. 71
  72. 72
  73. 73
  74. 74
  75. 75
  76. 76
  77. 77
  78. 78
  79. 79
  80. 80
  81. 81
  82. 82
  83. 83
  84. 84
  85. 85
  86. 86
  87. 87
  88. 88
  89. 89
  90. 90
  91. 91
  92. 92
  93. 93
  94. 94
  95. 95
  96. 96
  97. 97
  98. 98
  99. 99
  100. 100
  101. 101
  102. 102
  103. 103
  104. 104
  105. 105
  106. 106
  107. 107
  108. 108
  109. 109
  110. 110
  111. 111
  112. 112
  113. 113
  114. 114
  115. 115
  116. 116
  117. 117
  118. 118
  119. 119
  120. 120
  121. 121
  122. 122
  123. 123
  124. 124
  125. 125
  126. 126
  127. 127
  128. 128
  129. 129
  130. 130
  131. 131
  132. 132
  133. 133
  134. 134
  135. 135
  136. 136
  137. 137
  138. 138
  139. 139
  140. 140
  141. 141
  142. 142
  143. 143
  144. 144
  145. 145
  146. 146
  147. 147
  148. 148
  149. 149
  150. 150
  151. 151
  152. 152
  153. 153
  154. 154
  155. 155
  156. 156
  157. 157
  158. 158
  159. 159
  160. 160
  161. 161
  162. 162
  163. 163
  164. 164
  165. 165
  166. 166
  167. 167
  168. 168
  169. 169
  170. 170
  171. 171
  172. 172
  173. 173
  174. 174
  175. 175
  176. 176
  177. 177
  178. 178
  179. 179
  180. 180
  181. 181
  182. 182
  183. 183
  184. 184
  185. 185
  186. 186
  187. 187
  188. 188
  189. 189
  190. 190
  191. 191
  192. 192
  193. 193
  194. 194
  195. 195
  196. 196
  197. 197
  198. 198
  199. 199
  200. 200
  201. 201
  202. 202
  203. 203
  204. 204
  205. 205
  206. 206
  207. 207
  208. 208
  209. 209
  210. 210
  211. 211
  212. 212
  213. 213
  214. 214
  215. 215
  216. 216
  217. 217
  218. 218
  219. 219
  220. 220
  221. 221
  222. 222
  223. 223
  224. 224
  225. 225
  226. 226
  227. 227
  228. 228
  229. 229
  230. 230
  231. 231
  232. 232
  233. 233
  234. 234
  235. 235
  236. 236
  237. 237
  238. 238
  239. 239
  240. 240
  241. 241
  242. 242
  243. 243
  244. 244
  245. 245
  246. 246
  247. 247
  248. 248
  249. 249
  250. 250
  251. 251
  252. 252
  253. 253
  254. 254
  255. 255
  256. 256
  257. 257
  258. 258
  259. 259
  260. 260
  261. 261
  262. 262
  263. 263
  264. 264
  265. 265
  266. 266
  267. 267
  268. 268
  269. 269
  270. 270
  271. 271
  272. 272
  273. 273
  274. 274
  275. 275
  276. 276
  277. 277
  278. 278
  279. 279
  280. 280
  281. 281
  282. 282
  283. 283
  284. 284
  285. 285
  286. 286
  287. 287
  288. 288
  289. 289
  290. 290
  291. 291
  292. 292
  293. 293
  294. 294
  295. 295
  296. 296
  297. 297
  298. 298
  299. 299
  300. 300
  301. 301
  302. 302
  303. 303
  304. 304
  305. 305
  306. 306
  307. 307
  308. 308
  309. 309
  310. 310
  311. 311
  312. 312
  313. 313
  314. 314
  315. 315
  316. 316
  317. 317
  318. 318
  319. 319
  320. 320
  321. 321
  322. 322
  323. 323
  324. 324
  325. 325
  326. 326
  327. 327
  328. 328
  329. 329
  330. 330
  331. 331
  332. 332
  333. 333
  334. 334
  335. 335
  336. 336
  337. 337
  338. 338
  339. 339
  340. 340
  341. 341
  342. 342
  343. 343
  344. 344
  345. 345
  346. 346
  347. 347
  348. 348
  349. 349
  350. 350
  351. 351
  352. 352
  353. 353
  354. 354
  355. 355
  356. 356
  357. 357
  358. 358
  359. 359
  360. 360
  361. 361
  362. 362
  363. 363
  364. 364
  365. 365
  366. 366
  367. 367
  368. 368
  369. 369
  370. 370
  371. 371
  372. 372
  373. 373
  374. 374
  375. 375
  376. 376
  377. 377
  378. 378
  379. 379
  380. 380
  381. 381
  382. 382
  383. 383
  384. 384
  385. 385
  386. 386
  387. 387
  388. 388
  389. 389
  390. 390
  391. 391
  392. 392
  393. 393
  394. 394
  395. 395
  396. 396
  397. 397
  398. 398
  399. 399
  400. 400
  401. 401
  402. 402
  403. 403
  404. 404
  405. 405
  406. 406
  407. 407
  408. 408
  409. 409
  410. 410
  411. 411
  412. 412
  413. 413
  414. 414
  415. 415
  416. 416
  417. 417
  418. 418
  419. 419
  420. 420
  421. 421
  422. 422
  423. 423
  424. 424
  425. 425
  426. 426
  427. 427
  428. 428
  429. 429
  430. 430
  431. 431
  432. 432
  433. 433
  434. 434
  435. 435
  436. 436
  437. 437
  438. 438
  439. 439
  440. 440
  441. 441
  442. 442
  443. 443
  444. 444
  445. 445
  446. 446
  447. 447
  448. 448
  449. 449
  450. 450
  451. 451
  452. 452
  453. 453
  454. 454
  455. 455
  456. 456
  457. 457
  458. 458
  459. 459
  460. 460
  461. 461
  462. 462
  463. 463
  464. 464
  465. 465
  466. 466
  467. 467
  468. 468
  469. 469
  470. 470