Chemistry Chick

Popular questions and responses by Chemistry Chick
  1. Chemistry

    Calculate the osmotic pressure of a 6.0 × 10-2 M solution of NaCl at 20°C (293 K). Okay when I set up problem MRT....I get something totally different from the answer 2.9 atm. Could u please show me your set up to get to 2.9 atm? Thanks a billion!!

    asked on October 29, 2011
  2. chemistry

    If 5.20 g of HCl is added to enough distilled water to form 3.00 L of solution, what is the molarity of the solution? [Use molecular weight: HCl, 36.46 amu]

    asked on October 29, 2011
  3. Chemistry

    Calculate the concentration (% W/V) of NaCl solution that was made by dissolving 15.0 g of sodium chloride in enough water to make 300.0 mL of solution. Okay the answer is 5.00%....however I keep getting 0.0500%....Why? and which one is the correct answer?

    asked on October 29, 2011
  4. Chemistry

    In the industrial synthesis of ammonia, the equilibrium constant expression may be written as: Keq= [NH3]^2/[N2][H2]^3 Calculate the value of this equilibrium constant, if the equilibrium concentration of nitrogen in the reaction mixture at 600°C if [N2]

    asked on November 18, 2011
  5. Chemistry

    Ethylene glycol has a specific heat of 0.578 cal/(g×°C). If 23.2 g of ethylene glycol absorbs 75.6 cal of heat energy, what will the temperature increase be?

    asked on November 29, 2011
  6. Chemistry

    Calculate the molarity of a solution if 300.0 mL of it contains 16.8 g of KNO3. [Use formula weight: KNO3, 101.11 amu]....Question do I need to convert 300.0 mL to L? My initial set up looks like this: (16.8g/101.11amu)/300.0 mL my answer turns out to be

    asked on October 29, 2011
  7. Chemistry

    A candy sample is completely combusted in a bomb calorimeter. The calorimeter contains 982 g of water, and the measured temperature increase is 2.62°C. What is the fuel value of the candy sample in nutritional Calories?

    asked on November 17, 2011
  8. chemistry

    Calculate the osmotic pressure of a 6.0 × 10-2 M solution of NaCl at 20°C (293 K).

    asked on October 29, 2011
  9. Chemistry

    Consider the reversible reaction: A(g)-2B(g)At equilibrium, the concentration of A is 0.381 M and that of B is 0.154 M. What is the value of the equilibrium constant, Keq?

    asked on November 29, 2011
  10. Chemistry

    I am stuck in the PLUG-N-CHUG PART. Here is what I get when I plug-n-chug...1.75 x 10-5 + log[0.164M/0.225M] I get the pH as 4.62 not confident in answer....please guide me to correct answer

    asked on November 17, 2011
  11. Chemistry

    A buffer solution contains HC2H3O2 at a concentration of 0.225 M NaC2H3O at a concentration of 0.164 M. The value of Ka for acetic acid is 1.75 × 10-5. Calculate the pH of this solution using the Henderson-Hasselbalch equation. Could you please show

    asked on November 17, 2011
  12. chemistry

    Calculate the concentration (% W/V) of NaCl solution that was made by dissolving 15.0 g of sodium chloride in enough water to make 300.0 mL of solution.

    asked on October 29, 2011
  13. Chemistry

    Calculate the osmolarity of a 2.0 × 10-3 M Na3PO4 solution. Na3PO4 is an ionic compound and produces an electrolytic solution.

    asked on October 29, 2011
  1. Psychology Please Help!!

    UR CORRECT

    posted on November 18, 2011
  2. Psychology Please Help!!

    a. the norms upon which the test was developed did not reflect her background.

    posted on November 18, 2011
  3. Science

    1 K = 1 °C = 1.8 °F = 1.8 °R

    posted on November 18, 2011
  4. 4th grade

    75-3(8)=51

    posted on November 18, 2011
  5. speech

    Helplessly looking at the fresh batch of cupcakes you removed from the oven, you notice their nakedness. Stepping back from the cupcakes, you ask yourself what will they where?

    posted on October 29, 2011
  6. speech

    Imagine the soft, potent smell of cupcakes baking in your oven. As the warm aroma saturates the home, the mind quickly begins formulating designs for the cupcakes......

    posted on October 29, 2011
  7. Chemistry

    Okay I think i figured it out...the answer given for this problem: 0.533M is incorrect! The right answer is: 0.553M b/c u do have to convert 300 mL into L. so problem looks like this: (16.8g/101.11)/0.3L

    posted on October 29, 2011