NAD

Newest questions and responses by NAD
  1. Chem

    The reaction for the industrial production of hydrogen cyanide is given below. 2CH4 + 2NH3 + 3O2 --> 2HCN + 6H2O What mass of NH3 is required for the synthesis of 1.5 × 105 kg of HCN if the reaction has a 97.5% yield?

    asked on September 27, 2016
  2. Chem

    The reaction for the industrial production of hydrogen cyanide is given below. 2CH4 + 2NH3 + 3O2 --> 2HCN + 6H2O What mass of NH3 is required for the synthesis of 1.5 × 105 kg of HCN if the reaction has a 97.5% yield?

    asked on September 27, 2016
  3. business math

    On 2 November 2006, Henry saved $1200 in an account that pays 8.6% per annum simple interest. Three years later, he added another $500 into the account. Find the amount in his account on 2 November 2012

    asked on July 25, 2016
  4. Math

    There are 45 students in a class of which 3/5of them are boys.how many girls ate there in the class?

    asked on July 20, 2016
  5. Algebra II

    What is the sum of the geometric series 12 E 2(1/2)^x x=0 4 0 2 3 PLEASE HELP Urgent

    asked on May 3, 2016
  6. statistics

    In a study of caffeine and stress, college students indicate how many cups of coffee they drink per day and their stress level on a scale of 1-10. The data appear below. Number of Cups of Coffee Stress Level 3 5 2 3 4 3 6 9 5 4 1 2 7 10 3 5 = 3.88 X= 5.13

    asked on November 25, 2013
  7. Chemistry

    A protein has a molecular weight of 98,300 grams/ mole. What will be the osmotic pressure if 0.128 grams of this protein I dissolved in 15.0 ml of water at 20 degrees calcias?

    asked on December 17, 2012
  8. Chemistry

    2. A 3.37 gram sample of a nonvolatile nonelectrolyte ( no ions) is dissolved in 23.7 grams of hexane (C6H14) at 25.0 degrees calcius. The vapor pressure of pure hexane at this temperature is 438 tort, and the vapor pressure of the solution is 419.3 torr.

    asked on December 17, 2012
  9. Chemistry

    1. The organic compound triphenylmethane (C19H16) when pure melts at 171.04 degrees c. When 1.92 grams of hexachlorobenzene (C6CL6) is mixed with 3.74 grams of triphenhlmethane, the melting point of the mixture is 163.19 degrees calcius. Calculate the

    asked on December 17, 2012
  10. General chemistry

    The density of the vapor of a compound at 95 degrees C and 827 mmhg is 7.41 grams/liter. Calculate the molecular weight.

    asked on December 9, 2012
  11. math

    Simplify (4x-6)/(3x^2-2x)*(3x^3-2x^2)/(4x^2-9)

    asked on September 10, 2012
  1. English

    Is it A ?

    posted on December 6, 2017
  2. Chem

    Yeah thank you, but i still can't figure it out :(

    posted on September 28, 2016
  3. PHYSICS

    I'm having the same problem

    posted on August 24, 2016