# 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!!

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]

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?

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]

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?

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

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?

8. ## chemistry

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

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?

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

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

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.

13. ## Chemistry

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

UR CORRECT

posted on November 18, 2011

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

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