Most popular questions and responses by Danna
  1. chemistry

    Consider the titration of 40.0 mL 0.250 M ethylamine, C2H5NH2, with 0.350 M HCl. Determine each of the following and sketch the titration curve. Kb of ethylamine = 5.6x 10-4 a. The volume of added acid required to reach the equivalence point. b. The

    asked on July 31, 2016
  2. chemistry

    what volume of carbon dioxide is formed when 11 of CS2 reacts with 18 L O2 to produce carbon dioxide gas and sulfur dioxide gas at STP?

    asked on May 13, 2013
  3. Chemistry

    what is the highest boiling point to the least HF,HCL, NACL, F2

    asked on April 23, 2011
  4. geometry

    how much water can be held by a cylindrical tank with a radius of 12 feet and a height of 30 feet? is it 33912 cubic feet? or perhaps 2260.8 cubic feet?

    asked on June 15, 2011
  5. geometry

    a cube shaped box is 6 inches wide and the rectangular box is 10 inches long, 4 inches wide, and 4 inches high. how much greater is the volume of the cube shaped box than the rectanglar box?

    asked on June 15, 2011
  6. Chemistry

    Consider the following reaction: PCl3 + 3H2O -----> P(OH) + 3HCl if 4.00L of PCl3 react with an excess of H2O at STP, how many grams of HCl would be formed?

    asked on May 10, 2011
  7. social studies

    what caused king philip's war?

    asked on October 8, 2008
  8. Africa

    what is a key technological that began around 500 bce?in the sub saharan africa? a.yam civilization b.iron smelting c.writing d.monumental archetecture please help- playing a world game with my sis!

    asked on October 30, 2011
  9. Math

    cindy is making a fruit juice drink . the recipe calls for 5 parts apple juice and 3 parts pineapple juice. cindy puts 2 1/2 cups of apple juice into a pitcher .cindy wants the juice drink in her pitcher to taste the same as the drink in the recipe . how

    asked on September 27, 2016
  10. English

    We're supposed to write a Reader's Response Journal on a passage from the book The Alchemist. I was wondering if mine sounded alright. Does it need any work? Is it sloppy or weak? ANY tips appreciated. :) ~~~ The King of Salem explained that a person’s

    asked on September 4, 2009
  11. world history

    please help me, everyone!(: 1.what 3 types of land are best suited for agriculture a. tundra, alluvial plains, and lowlands b. swamplands, alluvial plains, and uplands c. swamplands, forests, and steppes d. alluvial plains,prairies,and uplands next- 2.e

    asked on June 15, 2011
  12. Economics

    what is the purpose of the market system

    asked on April 12, 2011
  13. Evening classes

    I have a question that has a incomplete Table and i have the equation y= -Xsquare+ x + 2.

    asked on April 28, 2009
  14. financial matter

    the ouside factors upon which the conclusions drawn from the statements are reliant

    asked on April 27, 2009
  15. world history

    please, please, please help me with my question! 1. el nino affects the andean region by A.causing seasonal rains to come at the wrongtime b.decreasing the temperture c.causing drought d.causing torrential rains

    asked on June 15, 2011
  16. math

    what is the prime factorization of 68?

    asked on September 4, 2008
  1. chemistry

    confused on how to use the henderson-hasselbach equation. I am having trouble with part C. I got a pH of 10.75 for part C. Not sure if i'm doing it correctly

    posted on July 31, 2016
  2. math

    Why is it important to line up desimals numbers by their place value when you add or subtract them

    posted on December 1, 2015
  3. Chemistry

    What is the magnitude of the energy of a bond formed between a potassium ( ) cation and an iodide ( ) anion? The ionic radii of K and I pm , are 152pm and 206pm, respectively. Assume the Born exponent is 10.

    posted on June 5, 2014
  4. world history

    1. is definatly c. right?

    posted on June 15, 2011
  5. world history

    umm... 3.charles darwin supported evolution,2.el nina is torrental rains, 1.d?,4.a?, and 5. of course is probably d. because the more the social network got started the economic sales probably shot way up?

    posted on June 15, 2011
  6. english

    it means that you can look at a persons beauty on the outside and not look at who a person is on the outsidetil you take the time to get to know them better. hope i helped(:

    posted on June 15, 2011
  7. world history

    thankyou ms.sue this helped me alot.

    posted on June 15, 2011
  8. Business

    my employees help me wait on people(waiters or waitreeses)or help my parents keep up the cooking in the back.my managers are to follow the guidlines oftheir roles and help their underguides learn to know what they do. all the employhees and managers are to

    posted on June 15, 2011