chemistry! URGENT

60,412 results, page 96

chemistry

what is the temperature (degree celcius) of 1.75g of o2 gas occupying 4.6l at 1.00 atm?

chemistry

2.06 X 10^25 formula units of aluminum sulfate would have what mass?

chemistry

To raise the temperature of 200.8 g of water from 50.00 °C to 60.00 °C requires how much heat?

Chemistry

What is the significance of the distance between two metals in the activity series?

chemistry PLEASE HELP

How many milligrams of sodium azide will produce 8.35 Liters of N2 at STP???

chemistry

What volume of oxygen is consumed when 9g of water is formed when butane is burnt?

chemistry

What mass of F2 is needed to produce 116 g of PF3 if the reaction has a 77.4% yield?

chemistry

how do you convert .99grams of copper to moles using the atomiuc weight

Chemistry

What is the oxidation state of Cr in each of the following compounds? (a) CrO (b) CrO3 (c) Cr2 O3

chemistry

does Adding A increased Q, so the net reaction proceeds to the left to decrease Q. a+b=ab

Chemistry

How many grams of NH3 can be produced if 105g of NH4OH are completey decomposed?

chemistry

0.315 M 2(NH4)SO4 and 0.488 M NH3 Calculate concentration of OH

chemistry

how many grams of KClO3 will dissolve in 1 liter of water at 50 degree celisus ?

chemistry

Calculate whether or not a precipitate will form if 1.40 mL of 0.62 M NH3 are added to 4.4 L of 1.0 10-3 M FeSO4.

Chemistry

How do you write a chemical equation for NH4NO3? Is it... NH3 + H2O= NH4 + OH

Chemistry

How many grams of H2SO4 are needed to make a 4.50 m solution in 300 g H2O?

chemistry

How many Liters of a 5.00 M Zn(NO3)2 would be needed to react with 200 g of (NH4)2S?

Chemistry

How many milliliters of 6.50 M HCl(aq) are required to react with 5.95 g of an ore containing 35.0% Zn(s) by mass?

chemistry

What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA–, A2–) at pH 8.98?

Chemistry

What do we mean when we say that concentrated nitric acid (HNO3) is 16 molar?

Chemistry

calculate the volume of 0.50 M NaOH needed to saturate 100.0 ml of 0.50 M Zn(NO3)2 with Zn(OH)2

Chemistry

calculate the volume of 0.50 M NaOH needed to saturate 100.0 ml of 0.50 M Zn(NO3)2 with Zn(OH)2

Chemistry

Calculate the volume of 0.3MHCL used to neutralise NaOH solution

organic chemistry

what type of feature will be observd in the ei mass spectrum of chlorobenzene?

chemistry

why spectrophotometric bioassay indirectly determine the concentration of glucose in solution

chemistry

Calculate the solubility of Mn(OH)2 in grams per liter when buffered at each of the following. (a) pH 7.7 (b) pH 9.6 (c) pH 11.3

Chemistry

Why can't NH_3_ donate a proton and act as a Bronsted-Lowry acid?

Chemistry

How many milliliters of 0.291 M HCl would be required to titrate 6.83 g KOH?

chemistry

What is the molar concentration of sodium ions in a 0.450 M Na3PO4 solution?

Chemistry

What are ways in which pka values for weak acids can be experimentally determined?

Chemistry

Calculate the mass of water that will be produced when 5.0 grams of H2 is reacted with excess O2.

Chemistry

Calculate the mass of water that will be produced when 5.0 grams of H2 is reacted with excess O2.

Chemistry

What is the effect of aqeour ammonia on (NH4)2SO4.FeSO4.6H2O?

Chemistry

How much 1.0 M NaOH would be required to completely neutralize 40.0 mL of 0.60 M HCl?

Chemistry

the pressure in a 10.0 L cylinder is raised from 483 mm Hg to 762 mm Hg. What is the new volume?

Chemistry

How many grams of CuSO4 * 5H2O are needed to prepare 100mL of a 0.10 M solution ?

Chemistry

Which is the strongest acid, CCl3COOH or CH2ClCOOH please explain WHY it is stronger.

Chemistry

I'm not really sure how to go about doing this problem... What is the pH of a 7.40 x 10-3 M solution of NH4Cl? Help is appreciated! Thank you

Chemistry

In a zinc-copper cell, Zn | Zn+2(1M) || Cu+2(1M) | Cu, which electrode is negative? a. Cu(s) b. Zn(s) c. Zn+2(aq) d. Cu+2(aq) Its A or C. Not sure. Please help.

Chemistry

If the temperature of 150.0g of water increased from 23.3C to 44.8C, how much heat was absorbed

General Chemistry II

Why is the Ksp value larger for NaNO3 and KNO3 than water?

chemistry

a salt shaker filled with 17.0g sodium chloride contain how many moles?

10th grade chemistry

How many grams of kno3 can be dissolved in 100g of h2o at 50°c

chemistry

how many atoms are present in a sample of water molecules with a mass of 1.800g

Chemistry

If the pressure is 10.0 atm, what is the temperature? If a 2.53-L container is filled with 169 g argon

chemistry

how does an increase in pressure affect the following reaction? C2H2(g)+H2(g) C2H4(g)

chemistry

effect of Bacl2 and HNO3 of (NH4)2so4.feso4.6ho2

Chemistry

What are the healthcare applications of biochemical, pharmaceutical and diagnostic chemical reactions?

chemistry

What is the charge carried by electrons as 0.120 mole of Cr(s) is oxidized to Cr3+(aq)?

chemistry

what is the word and balanced chemical equation for oxalic acid and marble?

chemistry

calculate the yield of CO2 if 30.g of C2H6 reacts with 14.0g of O2. Show work

Chemistry

Calculate the [H+] for: black coffee with a pH of 6.9 (Enter your answer as follows: 1.0E-2 for 0.010)

chemistry

How many mL of 0.100M HCl are needed to neutralize 49.0mL of 0.104M Ba(OH)2 solution?

Chemistry

What are the Six possible ratios for the equation for the formation of potassium chloride?

Chemistry

What are the Six possible ratios for the equation for the formation of potassium chloride?

chemistry

What is the final temperature of 1370 g of water, originally at 20.9°C, if it absorbs 47.6 kJ of heat?

Organic Chemistry

How do I make an IR Spectrum of C6H12S2 (Allyl Propyl Disulfide)

chemistry

the amount of K2Cr2O7 required to prepare 100ml of its 0.05N solution

chemistry

C3H8(g)+5O2(g)-->3CO2(g)+4H2O(l) what reactant is oxidized and which is reduced?

chemistry

What is the minimum volume of 10.0 M H2SO4 necessary to react completely with 16.2g of Na2CrO4?

chemistry

how many grams of carbon dioxide can be produced when 15.g of oxygen is reacted with 25.g of c2h2

chemistry

Balance the following redox reaction. MnO4 (aq) + Fe (s) --> Mn2+ (aq) +Fe2+ (aq)

chemistry - thank you:)

What volume of H2SO4 0.04 M is required to completely neutralize 200 mL of Al(OH)3 0.02M?

Chemistry

What is the concentration of NO− 3 after mixing? Answer in units of mol/L

Chemistry Help Please

The concentration of hydroxide ions in a solution of nitric acid 0.2 M is: a. 2 x 10-14 M b. 5 x 10-14 M c. 5 x 10-7 M d. 2 x 10-1 M IS IT D)?

Chemistry

Calculate the osmotic pressure at 22 °C of a 0.25 M solution of a) dextrose, b) magnesium chloride.

chemistry

diffusion helps detecting leakages in cylinders or gas stoves

Chemistry

Assume you are starting with a 10x solution. how would you make it a 7.5x dilution?

Chemistry

What is the mole fraction and mass percent of NaCl when the molality is 1.71m?

chemistry

try comparing the e values with of silver and i think you will see a reason why..

Chemistry

What is the volume of a sample of helium that has a mass of 5.13x10^-3 and a density of 0.17847g/L

chemistry

you will be presented with three crystallographic direction drawn in a unit cell.

Chemistry

What are the oxidation numbers for sulfur in the half reaction SO2 --> H2SO4 ?

chemistry

If 7.50 mL of 0.100M HCl is mixed with 12.5mL of NaOH. What is the concentration of the base

chemistry

If 37.0 mL of HCl is used to neutralize 25.0 mL of 0.09345M LiOH. What is the concentration of the acid

chemistry

If 37.0 mL of HCl is used to neutralize 25.0 mL of 0.09345M LiOH. What is the concentration of the acid

chemistry

I need the half reactions for this redox reaction: 2KClO3-----> 2KCl + 3 O2

chemistry

36.5g of hcl are dissolved in 180g of h2o. what is the mole fraction of the solute

Chemistry

636 grams of Na2CO3(s) are disolved in 3.0 liters of aqueous solution

chemistry

What causes a tip that allows us to see the precessional period in NMR?

Chemistry

How many milliliters of 2.00 M HCl(aq) are required to react with 7.55 g of an ore containing 36.0% Zn(s) by mass?

chemistry

what is the wavelength of the radiation absorbed when an electron move from n=2 to n=5 for a helium +1 ion?

chemistry

calculate the de broglie wavelength of He atom at 27 degree celsius & v=2.4*1000

Chemistry

Calculate the equilibrium constant, k a reaction with delta G= -32.5 kj/mol at 25 degrees C

Chemistry

What mass of AgI can be produced from a 0.512g sample that assays 20.1% ALI3?

Chemistry

need help to balance half reaction in basic solution IO3 to I2

Chemistry

Help? How many moles of LiF would be required to produce a 2.5 M solution with a volume of 10.5 L?

chemistry

what is the concentration of a 250 ml solution that contains 44 grams of magnesium fluoride

chemistry

how many grams of oxygen are required to burn completely 570g of octane?

chemistry

Dissolve 0.590/(mol)of citric,C-6-8H-O7),in 135(1Kg)of water.

chemistry

Dissolve 0.590/(mol)of citric,C-6-8H-O7),in 135(1Kg)of water.

chemistry

Dissolve 0.590/(mol)of citric,C-6-8H-O7),in 135(1Kg)of water.

Chemistry

What is the density of 3.40 Liters of Hydrochloric acid (HCl) that has a mass of 24.5 grams?

chemistry

The subject is stoichiometry. How many moles of NH3 can be produced from 12.0mol of H2 and excess N2?

chemistry

What mass of nitric acid, in grams, can be made from 113g g of ammonia?

chemistry

the density aniline c6h5nh2 is 1.02g/mL how many molecules are present in 1.00Lsample

chemistry

CAN NaOH(aq)+Co2 yield NaHCO3 PLEASE ANSWER DEEPLY!!!!!!!!!!!!!!!

Chemistry

What are the benefit of letting the solutions of HCl(aq) and NaOH(aq) sit overnight?

Chemistry

How many atoms of hydrogen are in a mixture of 3.49x10^23 molecules of H2O and 78.1g of CH3OH?

Chemistry

Calculate the number of phosphorus atoms in 17.0g sample of calcium phosphate

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