Jetta

Most popular questions and responses by Jetta
  1. chemistry

    a sample containing 1.50 mol neon gas has a volume of 8.00L.what is the new volume of the gas in liters when the following changes occur in the quantity of the gas at constant pressure and temperature? a.a leak allows on-half of the neon atoms to escape.

    asked on June 27, 2010
  2. chemistry

    calculate the pressure,in atmospheres, of 2.00 mol helium gas in a 10.0-L container at 27 celcius?

    asked on June 27, 2010
  3. chemistry

    calculate the pressure,in atmospheres, of 2.00 mol helium gas in a 10.0-L container at 27 celcius?

    asked on June 27, 2010
  4. chemistry

    How much 0.150 M sodium hydroxide would be required to just neutralize 15 mL of 0.175M hydrochloric acid? 15mL x 0.150M/0.175M=12mL correct!

    asked on June 29, 2010
  5. chemistry

    a sample of helium gas has a volume of 6.50L at a pressure of 845mm Hg and a temperature of 25 celcius.what is the pressure of the gas in atm when the volume and temperature of the gas sample are changed to the following: a. 1850 mL and 325K

    asked on June 27, 2010
  6. chemistry

    Why are optical isomers not found for CH2ClBr?

    asked on June 29, 2010
  7. math

    Multiplying and Dividing Rational Expressions: 2) x^2-8x+7/x^2+6x-7 = (x-7)/(x+7) 3) x^2-5x+6/x+4 times 3x+12/x-2 =3(x-3) 4)2x-3/5x+1 divided by 6x^2-13x+6/15x^2-7x-2=1 5) x^3-9x/x^2+11x+24 times x^2+7x-8/x^2-4x+3= x(x-3)(x-1)/(x+3)(x+8) 6) 4x-8/x^2-x-6

    asked on August 3, 2010
  8. math

    Multiplying and Dividing Rational Expressions: 2) x^2-8x+7/x^2+6x-7 = (x-7)/(x+7) 3) x^2-5x+6/x+4 times 3x+12/x-2 =3(x-3) 4)2x-3/5x+1 divided by 6x^2-13x+6/15x^2-7x-2=1 5) x^3-9x/x^2+11x+24 times x^2+7x-8/x^2-4x+3= x(x-3)(x-1)/(x+3)(x+8) 6) 4x-8/x^2-x-6

    asked on August 4, 2010
  9. chemistry

    Why are cis and trans isomers not possible for ClCH2CH2Cl? Because it is a single bonded compound and cis-trans isomerism is only possible when fre rotation about a bond is restricted or a double bond or cycle is essential for existence of cis-trans

    asked on June 29, 2010
  10. chemistry

    use the molar volume of a gas to solve the following at STP: a. the number of moles of O2 in 44.8 L O2 gas. b. the number of moles of CO2 in 4.00L CO2 gas. c. the volume(L) of 6.40g O2. d. the volume(mL) occupied by 50.0g neon.

    asked on June 27, 2010
  11. chemistry

    Why are optical isomers not found for CH2ClBr?

    asked on June 29, 2010
  12. chemistry

    why is C4H10 the simplest alkene that can have structural isomers? Because compounds wwith the same molecular formula but different structural formula are called isomers in C4H10

    asked on June 29, 2010
  13. chemistry

    solve for the new pressure when each of the following temperature changes occurs, with n and V constant: b. an aerosol can has a pressure of 1.40 atm at 12 celcius.what is the final pressure in the aerosol can if it is used in a room where the temperature

    asked on June 27, 2010
  14. math

    Multiplying and Dividing Rational Expressions: 1. 2x^4/x^5 times 6x/x^3 times x/4= 3/x^2

    asked on August 4, 2010
  15. math

    Multiplying and Dividing Rational Expressions: 1. 2x^4/x^5 times 6x/x^3 times x/4= 3/x^2

    asked on August 3, 2010
  16. chemistry

    why is unecessary to measure precisely 25.00mL of unknown acid into the beaker?

    asked on June 29, 2010
  17. chemistry

    A volatile liquid was allowed to evorate in a 43.298g flask that has a total volume of 252mL.the temperature of the water bath was 100 celsius at the atmospheric pressure of 776 torr.the mask of the flask and condensed vapor was 44.173g.calculate the molar

    asked on June 28, 2010
  18. math

    solve for X ? 1) 8-3x < 14 -3x/-3 < 6/-3 x=-2 2) 7x -3 > 4x +3 3x -3> 3 3x/3 >6/3 x>2 3) x-5 -8 x-4 4) x+ 7 30 x 6 are they correct..

    asked on July 15, 2010
  19. math

    2(x+4)^3(3x-15)^4=0 solve for x. is the answer 3,4

    asked on July 13, 2010
  20. math

    find the degree of 2x^5y^3+6x^2y^7 is the answer 14

    asked on July 13, 2010
  21. math

    how can i find the degree of 2x^5y^3+6x^2y^7

    asked on July 12, 2010
  22. chemistry

    a graduated cylinder weights 64.376g empty.when i measure 30.0mL into it weights 89.98g.what is the density of the liquid? 64.376g-89.98g=25.604g then i 25.604/30.0=.853

    asked on June 29, 2010
  23. chemistry

    calculate the densities of each of the following gases in g/L at STP: a. F2 b. CH4 c. Ne d. SO2

    asked on June 27, 2010
  24. chemistry

    11.31) solve for the new pressure when each of the following temperature changes occurs, with n and V constant: a. a gas sample has a pressure of 1200 torr at 155 celcius. what is the final pressure of the gas after the temperature has droped to 0 celcius?

    asked on June 27, 2010
  25. biology

    1. Which bond will comes apart in water? answer: ionic

    asked on September 15, 2010
  26. Biology

    Hydrogen= 1 proton, 0 Neutrons, 1 Electrons and 1 electrons in outer shell. is correct!

    asked on September 10, 2010
  27. math

    Radical Equation: Solve for x. 2x+6=1+2x-1

    asked on August 1, 2010
  28. math

    is 9x^2-36x+25 a perfect square? the answer is no

    asked on July 14, 2010
  29. math

    Find the degree of 7u^4v^2w^5 is the answer 11

    asked on July 13, 2010
  30. math

    Find the degree of 7u^4v^2w^5

    asked on July 12, 2010
  1. math

    are they correct?

    posted on August 4, 2010
  2. math

    would you tell me please are they correct?

    posted on August 4, 2010
  3. math

    is the answer 11

    posted on July 13, 2010
  4. math

    is the answer 14

    posted on July 13, 2010
  5. chemistry

    butane CH3-CH2-CH2-CH3 iso butane CH3-CH(CH3)-CH3

    posted on June 29, 2010
  6. chemistry

    would you please tell me the calculation....please

    posted on June 28, 2010
  7. chemistry

    is the answer for this one 7.22

    posted on June 28, 2010