chemistry! URGENT

59,982 results, page 96

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

AP Chemistry

assuming a density of 1.0 g/mL, calculate the molarity and mole fraction of 3.0% h2o2

Chemistry

What is the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298 K?

Chemistry

What is the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298 K?

Chemistry

How many years will it take for 88g tritium to decay to an 11g sample?

Chemistry 12

Calculate the mass of K2CRO4 needed to make 3.00 L of a 0.0200 M solution.

Chemistry

Is boron trichloride a Giant covalent or Simple molecular substance?

chemistry

What mass of oxygen is needed for the complete combustion of 5.00×10−3g of methane?

chemistry -lab

what would be the percent yield if 2.2 grams of aspirin is formed?

chemistry

What mass of magnesium chloride is formed in the reaction between 7 g of Mg and 7.9 g of Cl2

AP Chemistry

write an oxidation- reduction reaction for the reactants OCl- and S2O3-2

Chemistry

How many grams of NaCl are contained in 500ml of normal saline solution which is 0.85%(w/v).

chemistry

HI(aq)+KOH(aq)→H2O(l)+KI(aq) express this as a complete ionic equation

chemistry

How do you draw the structure of the reaction of 1-hexene with h2o in the presence of acid

chemistry

What is formed when zinc carbonate reacts with concentrated hydrochloric acid?

Chemistry

How could 2 molecular compounds react to create a precipitate and an aqueous solution?

Chemistry

Which of the following groups are indicative of anionic polymerization? a)F b)Cl c)COOCH3 d)H e)CH2CH3

CHEMISTRY BALANCING CHEMICAL EQUATION

H2SO4 + NaOC = Na2SO4 + H2O

Chemistry

I do not understand why this cannot go to equilibrium? Na2CO3(aq)+HCl(aq)->H2O(l)+CO2(g)+NaCl(aq)

Chemistry (DrBob222)

Is the relationship between delta G and Temperature inverse or direct?

Chemistry

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

chemistry

How can you convert the number of atoms of these isotopes 35Cl and 37Cl to percentage?

chemistry

how many grams of chromium are required to react with 125 mL of 0.75M CuSO4?

chemistry

What is the symbol equation of iron nails with copper sulfate solution.

Chemistry

A sample of NH3 gas occupies 75.0 liters at STP. How many molecules is this?

Chemistry

What would be the temperature change if 3.0g of water absorbed 15J of heat?

chemistry

if a coin with 3.0 cm diameter, 0.2 cm thickness weighs 10.377g, what are its volume and density?

chemistry

calculate the percentages by mass of the component element in sodium trioxonitrate(v)

Chemistry

What volume of oxygen at 25 degrees celsius and 93.5 kPa will use up 57.1 g of butane?

chemistry

3H2+N2=2NH3 if 2.70 g of H2 reacts with jugful of N ,how many grams of NH3 is formed?

chemistry

how many grams of sodium oxalate, Na2C2O4, could be obtained from 213 g of C6H6?

analytical chemistry

How much NaOH (in grams) would there be in 0.25 litre of a 0.3M solution?

Chemistry

write a sentence for the following reaction PCl5(s)=PCl3(s)+Cl2(g)

chemistry

What is the molality of a solution composed of 28.4 g of methanol CH3OH and 250 g of water

Chemistry

How do I calculate moles from the given litres and mass of the substance (in grams)?

Chemistry

How do I calculate moles from the given litres and mass of the substance (in grams)?

Chemistry

The Maximum number of electrons that may occupy the third electron shell is A)2 B)8 C)10 D) 18

Chemistry

What atom is indicated by the following electron configuration. 1s^22s^12p^1 ?

Chemistry

Calculate [OH−] for 1.90mL of 0.190M NaOH diluted to 1.50L .

Chemistry

A solution has 189 grams of HNO3 dissolved in 1000L of water. What is pH?

Chemistry

How has crude oil changes the country (positive and negative points)

Chemistry

What would be the volume of 5.0 moles of gas at STP? Can you explain how to do it please?

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