Ken

Most popular questions and responses by Ken
  1. chemistry

    1. Which example has particles that can be drawn closer to occupy smaller volume? a. fruit juice b. block of wood c. air inside the syringe d. ice cube 2. Which of the following phenomena does NOT involve the application of gas pressure? a. burning fuels

    asked on July 6, 2015
  2. Chem II

    Whih of the following liquids would make a good solvent for iodine? HCl H2O CH3OH NH3 CS2 How do you determine what will make a good solvent for something

    asked on June 4, 2008
  3. Chemistry

    a 0.250 mol sample of HX is dissolved in enough water to form 655mL of solution. If the pH of the solution is 3.44, what is the Ka of HX.

    asked on March 19, 2012
  4. Chem II

    Calculate the pH of the solution made by mixing 35.0 mL of 0.500 M ca(OH)2 with 45.0 mL of 0.710 MHCl

    asked on April 16, 2008
  5. chemistry

    Concerning the following reaction at equilibrium: 3Fe(s) + 4H2O(g) Fe3O4(s) + 4H2(g), increasing the concentration of the Fe(s) would: Answer A. Shift the equilibrium to the right B. Shift the equilibrium to the left C. No change D. Increase the value of

    asked on July 21, 2012
  6. chemistry

    A reaction with an equilibrium constant Kc = 1.5 x 10-25 would consist of which of the following at equilibrium: A. some reactants and products with products slightly favored B. essentially all products C. some reactants and products with reactants

    asked on July 21, 2012
  7. chemistry

    For the reaction at equilibrium: 3Fe(s) + 4H2O(g) Fe3O4(s) + 4H2(g), removing some of the product, Fe3O4(s), would: Answer A. Increase the value of the equilibrium constant, K B. No change C. Decrease the value of the equilibrium constant, K D. Shift the

    asked on July 21, 2012
  8. chemistry

    Kp for the reaction CO2(g) + C(s) 2CO(g) is 1.47 at 727°C. Calculate Kc at this temperature Answer A. 0.0179 B. 0.0246 C. 121 D. 87.7 E. 1.47

    asked on July 21, 2012
  9. geometry

    What is the area of a sector with a central angle of 210 degrees and a diameter of 4.6 m?

    asked on May 3, 2017
  10. math

    backpack discounted 10% on sale for $37.80

    asked on December 18, 2011
  11. chemistry

    A reaction with an equilibrium constant Kc = 1.5 x 1021 would consist of which of the following at equilibrium: A. some reactants and products with reactants slightly favored B. essentially all products C. essentially all reactants D. approximately equal

    asked on July 21, 2012
  12. Chem II

    A 0.10 M HF solution is 8.4% ionized. Calculate the H^+ ion concentration. Here is my line of thought. For every mole HF disolved yeilds one mole of H^+. Since there is ).10 M HF, and the solution is 8.4% ionized = 0.84 M. Is this correct?

    asked on June 18, 2008
  13. Chem II

    A 0.10 M HF solution is 8.4% ionized. Calculate the H^+ ion concentration. The "8.4% ionized" is throwing me. This is my line of thinking. For every mole HF disolved yeilds one mole of H^+. Since there is 0.10 M HF and the solution is 8.4% ionized = 0.84

    asked on June 18, 2008
  14. Geography

    I had 2 questions need to be done by the night, please help me 1. Calculate the noon sun angle for New Orleans, USA(30N), and for Helsinki, Finland(60N), on each of the following dates: march 21, june21, sep 22, dec 22,10/3 2. What are the zenith angle and

    asked on October 5, 2010
  15. Chem II

    In the question Consider a 0.90 M Al(NO3)3 solution. This solution has a nitrate ion concentration of . . . . How do you figure the nitrate ion concentration?

    asked on June 6, 2008
  16. Economics

    Willy's widgets, a monopoly, faces the following demand schedule (sales of widgets per month): Price $20 30 40 50 60 70 80 90 100 Quantity 40 35 30 25 20 15 10 5 0 Calculate marginal revenue over each interval in the schedule (for example, between Q = 40

    asked on November 26, 2006
  17. chemistry

    Hydrogen sulfide burns in oxygen to form sulfur dioxide and water. If sulfur dioxide is being formed at a rate of 0.19 mol L-1 s-1, what are the rates of disappearance of hydrogen sulfide and oxygen? rate of disappearance of O2? rate of disappearance of

    asked on September 4, 2015
  18. Physics

    Town A lies 20 km north of town B. Town C lies 13 km west of town A. A small plane flies directly from town B to town C. What is the displacement of the plane. Please explain how you got the answer

    asked on September 13, 2017
  19. Chem II - Equilibrium

    A 2.00 mol sample of nitrogen dioxide was placed in an 80.0L vessel. At 200 degrees C, the nigrogen dioxide was 6.0% decomposed according to the equation: 2NO2 in equilibrium 2NO + O2 Calculate the value of Kc for this reaction at 200 degrees C. I have

    asked on March 6, 2008
  20. chemistry who step by step for me

    1.2g mixture of na2c03 and k2c03 was dissolved in water to form 100cm3 of solution, 20 cm3 of this solution required 40cm3 of 0.1 hcl for neutralization. Calculate the weight na2c03 and k2c03 in the mixture? My calculation 20cm3/100cm3 = 0.2 x/53 +

    asked on June 22, 2014
  21. history

    How did Mexican Cession shape the growth of the United States? (Select all that apply.) a. It promoted migration west. b. It promoted cultural hegemony. c.It eliminated nationalism. d. It spread Christianity.

    asked on December 16, 2018
  22. Chem II

    When you are given the question: Arrange the following aqueous solutions in order of increasing boiling points. 0.050 m Mg(NO3)2; 0.100 m ethanol; and 0.090 m NaCl. I know the formula for boiling point, but I don't know where to get the Kb. Am I headed in

    asked on June 6, 2008
  23. chemistry

    give the oxidation number of nitrogen in the following: 1. NH2OH 2. N2F4 3. NH4+ 4. HNO2

    asked on November 4, 2008
  24. Chem II

    What is the vapor pressure at 23 degrees C of a solution of 1.20 g of naphthalene, C10H8, in 25.6 g of benzene, C6H6? The vapor pressure of pure benzene at 23 degrees C is 86.0 mmHg; the vapor pressure of naphthalene can be neglected. Calcluate the vapor

    asked on February 14, 2008
  25. chemistry

    one litre of a sample hard water contain 4.44mg cacl2 and 1.9mg of mgcl2. What is the total hardness in terms ppm of cac03?

    asked on June 29, 2014
  26. Chemistry

    Given the equation: 6CO2(g) + 6H2O(l) -> C6H12O6(s) + 6O2(g) What is the minimum number of liters of CO2(g), measured at STP, needed to produce 32.0 grams of oxygen? 1) 264 L 2) 32.0 L 3) 192 L 4) 22.4 L How do I solve?

    asked on June 14, 2009
  27. Physics

    A merry-go-round is a common piece of playground equipment. A 6.42m diameter merry-go-round with a mass of 648.0kg is spinning at 39.4rpm. John runs tangent to the merry-go-round at 6.36m/s, in the same direction that it is turning, and jumps onto the

    asked on January 26, 2016
  28. geometry

    In triangle ABC, BC=40m , AB=50m and Angle A=53 degree. Determine the area of a triangle.

    asked on June 9, 2010
  29. Chem II

    Would either of the following reactions go almost completely to product at equilibrium? a)2NO + 2H2 at equil N2 + 2H2O Kc = 6.5 x 10 113 b)COCl at equil CO + Cl Kc = 3.6 x 10 -16 How do you figure this out?

    asked on March 6, 2008
  30. Math

    If trapezoids have the same area, would they always have the same perimeter?

    asked on November 28, 2018
  31. Chemistry

    Glycine amide hydrochloride (BH+) FM 110.54, pKa 8.20 Glycine amide (B) FM 74.08 b.) How many grams of glycine amide should be added to 1g of glycine amide hydrochloride to give 100ml of solution with pH 8? I tried using the henderson-hasselbalch equation

    asked on October 30, 2011
  32. science 8

    Waht is the reason for the seasons experiment?

    asked on December 16, 2014
  33. chemistry step by step for me thank a lot

    What is the weight of ca(oh)2 required for 10 litre of water remove temporary hardness of 100 ppm due to ca(H03)2 The answer 0.74 Thank all tutors for your help Pls show step by step for me

    asked on July 6, 2014
  34. Chemistry

    If performing a potentiometric halide titration with Ag+: 1. Is siver nitrate a primary standard? Explain. 2. What is the purpose of using a bisulfate buffer? 3. Have 1.0000 grams of unknown, containing .3000g KCl and .7000g KI. You dissolve in 100 mL of

    asked on December 2, 2011
  35. math

    A wheel made 660 revolutions at 44 8/9 revolutions per minutes. how many minutes did it rotate

    asked on October 21, 2014
  36. chemistry

    Kp for the reaction is 1.47 at 727°S CO2(g) + C(s) 2CO(g) Calculate Kc at this temperature

    asked on July 21, 2012
  37. Chem II

    Which of the follwoing gives the molarity of 17.0% by mass solution of sodium acetate (molar mass = 82.0 g/mol) in water. The density of the solution is 1.09 g/mL. OK - I know that to figure molarity is moles divided by liters. This is confusing me because

    asked on June 4, 2008
  38. math

    Trig Identities prove sinx+1 \ 1-sinx = (tanx+secx)^2

    asked on January 3, 2018
  39. Chem II

    The equilibrium constant, Kp for the reaction PCl5 PCl3 + Cl2 is 1.05 at 250 degrees C. The reaction is started with PCl5, PCL3 and Cl2 at 0.177, 0.223, and 0.111 atm at 250 degrees C. When the reaction comes to equilibrium, the pressure of _________ PCl3

    asked on June 16, 2008
  40. physics

    A ball is attached to a string with length of L. It swings in a horizontal circle, with a constant speed. The string makes an angle (theta) with the vertical, and T is the magnitude of the tension in the string. 1)Determine the Mass of the Ball.

    asked on November 4, 2007
  41. Chemistry

    The volume of a sample of a gas collected over water at 32 Celsius and 752 torr is 627 ml. What will the volume of the gas be when dried and measured at STP? (Vapor pressure of water at 32 Celsius = 35.7 torr)

    asked on December 6, 2016
  42. chemistry step by step for me Bob

    A sample of peanut oil weighing 2g is added to 25ml of 0.4M koh. After saponification is complete, 8.5ml of 0.28M hes04 is needed to neutralize excess of koh. The saponification number of peanut oil. The right answer 146.75 Bob solve it for me step by step

    asked on July 4, 2014
  43. Statistics

    A sociologist interested in cultural differences compared women of two ethinic groups on a Role Approval Index (high scores mean high degrees of approval of one's social role). The results are as follows: Ethnic Group A: N = 15 M= 55 S2 = 6.5 Ethnic Group

    asked on October 16, 2009
  44. Math

    if 8000 is invested in a long-term trust fund with an interest rate of 5% compounded continuously what is the amount of money in the account after 15 years?

    asked on January 10, 2019
  45. AP Chemistry

    For each of the following pairs of half-cells, determine the overall electrochemical reaction that proceeds spontaneously. Na+ | Na, Ni2+ | Ni

    asked on October 26, 2015
  46. Chemistry

    What is the HCl concentration if 65.8mL of 0.300M NaOH is required to titrate a 15.0mL sample of the acid?

    asked on December 18, 2014
  47. chemistry please step by step for me

    what volume of hcl solution of density 1.2g/cm3 and containing 36.5% by weight hcl, must be allowed to react with zinc in order to liberate 4g of hydrogen I know this calculate this part, but I do not get the answer 333.3ml 1.2g/ml x 1000 x 0.365/36.5 =

    asked on July 4, 2014
  48. English 2 Animal Farm

    Explain why an enemy or scapegoat is necessary for the animals. Why does the enemy have to change? if there were no enemy, what would that mean for any society, including that animal of AnimalFarm?

    asked on May 15, 2012
  49. Chemistry

    A blood serum sample containing Na+ gave an emission signal of 4.27 mV. A small volume of concentrated standard Na+ was then added to increase the Na+ concentration by 0.102 M, without significantly diluting the sample. This "spiked" serum sample gave a

    asked on December 12, 2011
  50. chemistry step by step for me

    100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density is 1.25g/ml. 50ml of 20.8% bacl2 and 100ml of 938% h2s04 solutions are mixed. Molarity of cl ions in

    asked on November 16, 2014
  51. economics

    Willy’s widgets, a monopoly, faces the following demand schedule (sales of widgets per month): Price

    asked on November 26, 2006
  52. chemistry

    What volume of hcl solution of density 1.2g/cm3 and containing 36.5% by weight hcl, must be allowed to react with zinc in order to liberate 4g of hydrogen The answer 333.3ml Who helps me step by step for me

    asked on July 4, 2014
  53. chemistry

    The radioactive isotope, phosphorus-32, has a half-life of 14.26 days. How much phosphorus-32 will remain after 60 days? Please help.

    asked on September 3, 2015
  54. Math

    Given A = (7, 1, 3), C = (4, -2, 3), B = (5, 1, 2), and D = (6, m, n), find m and n so that segments BD and AC have the same midpoint. Is ABCD a parallelogram? Please help!

    asked on November 29, 2018
  55. Physics

    A car mass of 950 kg is initially travelling at 60km/h. Determine the final speed of the car when the speed increases so that it's kinetic energy increased by 165 kJ.

    asked on April 26, 2017
  56. chemistry step for step thank a lot

    10L of hard water required 5.6g of lime for removing hardness. Hence temporary hardness in ppm of cac03. The answer 1000 I think ppm= 1mg/1L 10L x 100g/mol cac03 = 1000 Who check it for me step by step Thank all tutors for your help. How many ml of a 0.05M

    asked on July 5, 2014
  57. Physics

    A pinhole camera has a small circular aperture of diameter D. Light from distant objects passes through the aperture into an otherwise dark box, falling on a screen at the other end of the box. The aperture in a pinhole camera has diameter D = 0.600 mm.

    asked on March 17, 2013
  58. Physics

    A rock, which weighs 350 lb in air, weighs 226 lb when submerged in fresh water (62.4 lb/ft3). The volume of the rock is:

    asked on December 16, 2010
  59. Chem II - Equilibrium

    6.75 g of SO2Cl2 was placed in a 2.00L flask. At 648 K 0.0345 moles of SO2 was present. Kc for the reaction SO2Cl2 SO2 + Cl2 is _____ 3.83 x 10 -2 4.71 x 10 -3 1.12 x 10 -2 6.12 x 10 -4 Ok, on this one, I think I am missing something. Don't I need Kc if I

    asked on June 17, 2008
  60. chemistry

    50ml of 20.8% bacl2 and 100ml of 9.8% h2s04 solutions are mixed. Molarity of cl ions in the resulting solution wt of ba =137 I do not still understand step by step clearly Thank a lot

    asked on November 23, 2014
  61. calculus

    sorry to ask a second question so soon, but i'm just not getting this one. if f(x)= 3x lnx, then f'(x)=? i used f'(x)=3x(D lnx) + D (3x) (lnx) f'(x)=3x (1/x) + 3 (lnx) so... f'(x)=3+3lnx or 3(1+lnx). unfortunately that isn't one of the possible answers

    asked on March 2, 2013
  62. Math

    A cone is inscribed in a sphere of diameter 32 cm. Angle between height and slant height of the cone is 30. Find the volume of the cone

    asked on November 29, 2018
  63. Physics!!!Please Help!

    -Steam at 100 ¡ãC is mixed with 166.4 g of ice at ¨C32.8 ¡ãC, in a thermally insulated container, to produce water at 44.6 ¡ãC. Ignore any heat absorption by the container. -Cwater = 4186. J/(kg ¡ãC) -Cice = 2090. J/(kg ¡ãC) -Lf,water = 3.33

    asked on April 10, 2013
  64. Chemistry

    In a chromatography experiment, a solution was prepared by mixing 12.98 mg of isopropanol plus 10.00 mL of an unknown containing some acetone, and diluting to 25.00 mL. Signal of 5.97 and 6.38 were observed for the acetone and isopropanol, respectively. In

    asked on December 13, 2011
  65. Physics

    Monochromatic x-rays (λ = 0.166 nm) from a nickel target are incident on a potassium chloride (KCl) crystal surface. The spacing between planes of atoms in KCl is 0.314 nm. At what angle (relative to the surface) should the beam be directed for a

    asked on March 17, 2013
  66. Chem II - Equilibrium

    For the reaction at 430 degree C, H2 + I2 2HI Kc = 54.3. Initially 0.714 moles of H2 and 0.984 miles of I2 and 0.886 moles of HI are placed in a 2.40 L vessel. The equilibrium concentration of H2 and I2 are _____. Ok, I tried this by changing the moles to

    asked on June 16, 2008
  67. Chem II

    Calculate the pH and percent ionization for the solution made up of 0.035 M NH3 and 0.015 M NH4Br.

    asked on April 14, 2008
  68. chemistry Ben

    50ml of 20.8% bacl2 and 100ml of 9.8% h2s04 solutions are mixed. molarity of cl ions in the resulting solutions is At.wt of ba = 137 100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of

    asked on November 16, 2014
  69. Physics

    A car of mass 1200kg starts from rest, accelerates uniformly to a speed of 4.0 meters per second in 2.0 seconds and continues moving at this constant speed in a horizontal straight line for an additional 10 seconds. the brakes are then applied and the car

    asked on December 4, 2012
  70. Calculus I

    *Optimization problem* [I don't know how to get to the answer] Problem: You have a cylindrical can with radius 4cm and height 10cm. Inside is a marble with a radius that has to be larger than 0 but less than 4 cm (even the largest marble will fit

    asked on November 12, 2012
  71. Chemistry

    How many grams of glycine amide (FM 74.08) should be used with 1.0 gram of glycine amide HCl (FM 110.54, pKa=8.20) to give 100 mL at pH 8.0? The buffer equilibrium reaction is: GlycineAmideHCl GlycineAmide + H+ which has the general form: BH+ B + H+ I'm

    asked on October 30, 2011
  72. Chemistry

    03 + 3I- + H20 --> O2 + I3^- + 2OH- A 1.00-L bulb of air containing O3 produced by an electric spark was treated with 25mL of 2M KI, shaken well, and left closed for 30 minutes so that all O3 would react. The aqueous solution was then drained from the

    asked on October 24, 2011
  73. Physics

    An object moving with uniform acceleration has a velocity of 13.0 cm/s in the positive x-direction when its x-coordinate is 2.73 cm. If its x-coordinate 2.95 s later is −5.00 cm, what is its acceleration? cm/s^2 Express the position of the object in

    asked on March 21, 2018
  74. math

    The density function for a femur can be modeled as ρ(x)=80+πcos(πx)+3x grams per centimeter, −25≤x≤25. (a) Calculate the total mass of a femur. (b) Find the center of mass of a femur.

    asked on February 21, 2016
  75. physics

    Calculate the pressure exerted on the floor by the heel if it has an area of 1.45 cm2 and the woman's mass is 58.0 kg. Express the force in N/m2 and lb/in

    asked on February 3, 2014
  76. Chemistry

    1. According to the collision theory of chemical reactions: A. High energy collisions result in few successful reactions as there isn’t sufficient time for the products to react. B. High energy collisions lead to the successful formation of products. C.

    asked on October 16, 2012
  77. Chemistry

    Sulfite (SO3^2-) in wine was measured by the following procedure: 50.0ml of wine were added 5.00ml of solution containing (0.8043 g KIO3 + 5 g KI)/100ml. Acidification with 1.0ml of 6.0 M H2SO4 quantitatively converted IO3^- into I3^-. I3^- reacted with

    asked on October 24, 2011
  78. Chemistry

    An unknown molybdate (MoO4^-2) solution (50.00ml) was passed through a column containing Zn(s) to convert molybdate into Mo^3+. One mole of MoO4^-2 gives one mole of Mo^3+. The resulting sample required 22.11 ml of 0.01234 M KMnO4 to reach a purple end

    asked on October 17, 2011
  79. chemistry

    how Many grams of copper(11) acetate monohydrate will you ned to prepare 10 mL of a 0.01 M solution?

    asked on December 1, 2010
  80. Chem II

    A first-order reaction is 35.5% complete in 4.90 minutes. The rate constant of the reaction is _____

    asked on June 13, 2008
  81. physics

    An automobile accelerates from rest at 0.9 m/s 2 for 25 s. The speed is then held constant for 18 s, after which there is an acceleration of −5.8 m/s 2 until the automobile stops. What total distance was traveled? Answer in units of km

    asked on November 17, 2016
  82. physics

    A sign with a mass of 1000.0 kg is suspended from a wall with a cable that is attached to the wall at a point 3 m above a horizontal beam that causes the sign to be a distance of 4 m from the wall. What is the tension in the cable?

    asked on October 12, 2009
  83. 11 th World History

    What exactly is nationalism and why did it grow as much as it did in the 19th century?

    asked on April 2, 2009
  84. Chem II

    Help me understand how to figure the i in the van't Hoff factor. MgSO4. Would the i = 5? If not, what and how?

    asked on June 6, 2008
  85. Chem II

    For the reaction at 430 degree C, H2 + I2 2HI. Kc = 54.3. Initially 0.714 moles of H2 and 0.984 moles of I2 and 0.886 molrd of HI are placed in a 2.40 L vessel. The equilibriuim concentration of H2 and I2 is _____. This is what I did. I changed all the

    asked on June 25, 2008
  86. ECONOMICS

    Willy’s widgets, a monopoly, faces the following demand schedule (sales of widgets per month): Price

    asked on November 26, 2006
  87. Chemistry

    Cola drinks have a phosphoric acid content that is described as `from 0.057% to 0.084% of 75% phosphoric acid, by mass." Estimate the pH range of cola drinks corresponding to this average range of H3PO4 content. I am having trouble with the wording of this

    asked on February 3, 2015
  88. chemistry step by step for me clearly

    Al2(s04)3 solution of a molal concentration is present in 1 litre solution of 2.684g/cc. How many moles of bas04 would be precipitated on adding bacl2 in excess. The answer 6M I want some tutors to explain for me step by step clearly. I do not still

    asked on July 12, 2014
  89. chemistry step by step thank a lot

    Al2(s04)3 solution of a molal concentration is present in 1 litre solution of 2.684g/cc. How many moles of bas04 would be precipitated on adding bacl2 in excess? the answer 6M Who helps me step by step for me clearly I am thankful to all tutors

    asked on July 11, 2014
  90. chemistry step by step thank a lot

    342gm of 20% by mass of ba (OH)2 solution sq gr 0.57 is reacted with 1200ml of 2M hn03. If the final density is same as pure water then molarity of the ion in resulting solution by nature of the above solution is dentified 0.888m Who solve it for me step

    asked on July 6, 2014
  91. Chemistry

    How do I start an ICE table from the following information: BrCl3(g)+ Cl2(l) -> BrCl5(g) where Kp=7.8*10^-6 and there is originally 0.215 atm BrCl3, 725g Cl2, 0.115 atm BrCl5 - Can pressures be used as initial concentrations?

    asked on October 2, 2012
  92. chemistry

    The solubility of silver chloride can be increased by dissolving it in a solution containing ammonia. AgCl (s) Ag+ (aq) + Cl- (aq) K1 = 1.6 x 10-10 Ag+ (aq) + 2NH3 (aq) Ag(NH3)2+ (aq) K2 = 1.5 x 107 What is the value of the equilibrium constant for the

    asked on July 21, 2012
  93. Calculus

    while shopping for wine for his wedding, Kepler noticed that the price of a barrel of wine (here assumed to be a cylinder) was determined solely by the length d of a dipstick that was inserted diagonally through a hole in the top of the barrel to the edge

    asked on November 7, 2010
  94. pre algebra

    matthew mixes pretzels that sell for $1.50 a pound with cereal that sells for $3.00 per pound. he wants to make 12 pounds of mixture to sell for $2.00 a pound. how many pounds of each should he use?

    asked on February 9, 2018
  95. math

    A flower displays contains tulips, roses, and carnations. For every 10 tulips, there are 4 roses and 6 carnation. The display contains 100 flowers. How many of the flowers are tulips?

    asked on March 3, 2017
  96. Physics

    An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic waves that travel 1530 m/s in seawater. How deep is the water directly below the vessel if the time delay of the echo to the ocean floor and back is 7 s? Answer in units of m. Is it

    asked on October 4, 2016
  97. Trig right triangle

    A ship leaves port at 6 am and heads due east at 20 knots. At 10 am, to avoid a storm the ship changes course to N 47°. Find the ships distance from port at 4 pm.

    asked on November 17, 2015
  98. chemistry

    1. Which example has particles that can be drawn closer to occupy smaller volume? a. fruit juice b. block of wood c. air inside the syringe d. ice cube 2. Which of the following phenomena does NOT involve the application of gas pressure? a. burning fuels

    asked on July 10, 2015
  99. math

    a 150g-iron ball at 95 Celsius is dropped into a cavity in a block of ice.the cavity is then found to contain 21 g of water . CALCULATE THE HEAT OF FUSION OF ICE (The specific heat capacity of iron is 0.11 cal/g x C degrees.)

    asked on January 27, 2015
  100. chemistry step by step for me. Thank a lot

    342gm of 20% by mass of ba(oh)2 solution sq gr .57 is reacted with 1200ml of 2m hn03. if the find density is same as pure water then molarity of the ion in resulting solution by nature of the above solution is dentified. The answer 0.888M Who helps me to

    asked on July 19, 2014

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