thad

Most popular questions and responses by thad
  1. chem help

    i just don't know where to begin/how a) Write a balanced chemical equation for: potassium carbonate + magnesium chloride b) Write a balanced chemical equation for: sulfuric acid + calcium carbonate c) Write a balanced chemical equation for: sodium sulfate

    asked on January 15, 2013
  2. chemistry quick help!

    In the balanced double replacement reaction of calcium chloride CaCl2 and aluminum sulfate Al2(SO4)3, how many grams of calcium sulfate can be produced if you start the reaction with 4.19 grams of calcium chloride and the reaction goes to completion?

    asked on January 25, 2013
  3. chemistry

    Carbonic acid, H2CO3, decomposes into water and a gas. Write the molecular equation for this decomposition. Remember to include the states of the reactants and products. Carbonic acid is an aqueous solution.

    asked on January 9, 2013
  4. chemchemchem

    Using the equation 2H2 + O2 ==> 2H2O, determine how many grams of water is produced when 13 moles of oxygen is consumed.

    asked on January 25, 2013
  5. honors chemistry

    Ammonia gas and hydrogen chloride gas from solid ammonium chloride. NH3(g),HCl(g) Balanced Equation:

    asked on January 9, 2013
  6. chemistry

    Write the balanced equation of the reaction described below. Include the states (s, l, aq, g) for the reactants and products. When aqueous calcium chloride and sodium phosphate are mixed, solid calcium phosphate and acqueous sodium chloride are produced.

    asked on January 15, 2013
  7. Math

    Wong's left at 7:00. It took him one and a half hours to check in at the airport. His house is an hour drive from the airport. At what time did Wong leave his house to get to the airport?

    asked on November 23, 2011
  8. Finance

    Rock Company acquired land 8 years ago for 2.2 million. Today it is valued at 5.8 million. Rock plans to build a new factory on the site which is estimated to cost 21.5 million plus addition building site preparation costs of 3.2 million. What is the

    asked on December 2, 2013
  9. Chemistry

    What is the largest amount of H2O in grams that can be formed when 6.10 g of H2 reacts with 6.10 g of O2, based on 2 H2 + O2 = 2 H2O

    asked on January 31, 2013
  10. Finance

    Firm is contemplating the purchase of a new warehouse inventory management system which will cost 3,600,000 at the end of its 8 year life. The warehouse management system will be depreciated straight line to 300,000 over its 8 year life. It is estimated it

    asked on December 2, 2013
  11. chem. quick help

    Ni(OH)2(s) + H2SO4 = 2H2O + NiSO4 so i balance this problem but I don't know the states of matter except the first one

    asked on January 16, 2013
  12. Chem hwk

    In the balanced double replacement reaction of calcium chloride CaCl2 and aluminum sulfate Al2(SO4)3, how many grams of calcium sulfate can be produced if you start the reaction with 18.97 grams of calcium chloride and the reaction goes to completion?

    asked on January 28, 2013
  13. Finance

    You purchase a machine for $50,000, depreciated straight-line to a salvage value of $20,000 over its 6 year life. If the machine is sold at the end of the 6th year for $27,000, what is the after-tax cash flow from the sale, assuming your tax rate is 40%?

    asked on December 2, 2013
  14. Chem help

    Radiowaves travel at the speed of light, which is 3 X 10^8 m/s. If a certain radio station broadcasts at a frequency of 1191 kHz, what is the wavelength of these waves? in meters? C=lamda V lamda= v/c so 1191/3e8 but it doesnt work..?

    asked on February 11, 2013
  15. Chemistry

    MIke and Shayne reacted sodium chloride with silver nitrate as indicated in the reaction below: AgNO3(aq) + NaCl(aq) → AgCl (s) + NaNO3 (aq) The actual yield of their silver chloride was 0.365 g. According to their calculations, they should have

    asked on January 31, 2013
  16. chem

    How many moles of Ca(OH)2 are produced when 9.19 grams of CaH2 and 7.90 grams of H2O react ?

    asked on January 30, 2013
  17. quick chem

    Which of the following wavelengths of light has the highest energy? 1. 10 mm 2. 650 nm 3. 10 µm 4. 0.1 nm 5. 10 cm

    asked on February 11, 2013
  18. chemistry final step

    If you have 24.98 grams of P and 74.99 grams of O2, how many moles of each compound do you have present? so I got .805 of P (limiting) and 2.343 O2 (excess) how do i do this step ? If you have 24.98 grams of P and 74.99 grams of O2, how many moles of each

    asked on January 30, 2013
  19. Chem hwk

    Using the equation N2 + 3H2 yields ==> 2NH3 , determine how many grams of ammonia will be produced when 233 grams of hydrogen is consume

    asked on January 25, 2013
  20. Chemistry! HELP!

    Explain why the shape of a molecule depends on the electron pairs around the central atom.

    asked on November 28, 2011
  21. weekly riddle

    yyyyur,yyyyyub,icury+y4?

    asked on March 13, 2008
  22. History

    How did divergent towards land, its ownership and its uses, impact the development of English and Spanish societies?

    asked on November 8, 2011
  23. World History

    How were the rights of individuals regarded in the English and Spanish colonies?

    asked on November 8, 2011
  1. chemistry quick help!

    that answer is also wrong though what am I missing?

    posted on January 25, 2013
  2. chemchemchem

    it doesn't. It just tells me to try again.

    posted on January 25, 2013
  3. chemistry quick help!

    so 4.19/111?

    posted on January 25, 2013
  4. chemchemchem

    but my site says that's wrong..

    posted on January 25, 2013
  5. math help

    I'm sorry but you've posted a huge number of questions in the last 30 minutes...can't you try some of them yourself?

    posted on January 25, 2013
  6. chemchemchem

    13 X 18? 234?

    posted on January 25, 2013
  7. Math

    19-3+x=5x 16+x=5x 16=4x x=4

    posted on January 25, 2013
  8. chemistry quick help!

    6 mols? so 4.19x6?

    posted on January 25, 2013
  9. chemistry

    but that's my problem I don't know how to get Na balanced

    posted on January 15, 2013
  10. chemistry

    but that's wrong because sodium is not balanced

    posted on January 15, 2013
  11. 4th grade

    You replace the n with any number you want.

    posted on October 25, 2010