Friday

October 31, 2014

October 31, 2014

Total # Posts: 33

**college statistics**

7. Mary goes into the supermarket. The probability that she buys (a) regular coffee is .30, (b) decaffeinated coffee is .40, and (c) that she buys both is .30. What is the probability that she buys regular coffee, decaffeinated coffee, or both?
*October 10, 2013*

**college statistics**

2. A researcher has developed a new questionnaire for measuring dominance and would like to estimate the population parameters for the test scores. The questionnaire is administered to a sample of n = 25 subjects. This sample has an average score of mean = 43 with SS = 2400. ...
*October 10, 2013*

**statistics**

6. Out of eight numbers, what is the probability of drawing a two on the first draw and a three on the second draw using sampling with replacement?
*October 10, 2013*

**statistics**

5. Find the weighted mean of the following two samples. Sample 1: n = 5 and the mean = 20 Sample 2: n = 15 and the mean = 10.
*October 10, 2013*

**statistics**

2. A researcher has developed a new questionnaire for measuring dominance and would like to estimate the population parameters for the test scores. The questionnaire is administered to a sample of n = 25 subjects. This sample has an average score of mean = 43 with SS = 2400. ...
*October 10, 2013*

**chem quantity**

a sample of soil containing hydrated barium chloride potassium chloride plus inert material weighd 0.8076g. tha sample was then dissolvd in water n treated with silver nitrate.tha resulting precipitate was collectd n found to weigh 0.5846g. calculate tha percentage of precipitate
*September 15, 2013*

**ECE**

To become a successful obeserver of young children, which of the following techniques is most effective?
*December 8, 2012*

**simple intrest**

25000 at 7% compounded semi anually for 10 years.
*November 22, 2012*

**geometry**

Xenia is ordering a cake for her friend’s wedding. She knows that there will be 110 guests at the wedding, and she is trying to decide how large a cake to order. She has been told that each guest should get a piece of cake that is 4 inches by 4 inches. She would like to ...
*June 29, 2012*

**geometry**

Jackson is creating a water garden surrounded by a triangular patch of grass. If the pond will take up the space indicated by the circle, how many square feet of sod will he need to complete the garden (use 3.14 for and round your answer up to the next foot)? the triangle is 6...
*June 29, 2012*

**Math**

15
*May 31, 2012*

**phisics**

A projectile is fired horizontally from a gun that is 45m above flat ground, emerging from the gun with speed 250m/s How long does the projectile remain in the air? At what horizontal distance from the firing point does it strike the ground?.What is the magnitude of the ...
*October 10, 2011*

**chemisty**

4. N2+3H2----2Nh3 k=1.2 at a T=375C you initially have 0.249mol of N2. 3.21*10^-2mol of H2, and 6.42*10^-4 mol of NH3 in a 3.5L container a.what is the equation to determine the reaction quotient, Q b.determine the reaction quotient Q c. compare Q and K. determine which way ...
*March 20, 2011*

**chemistry**

A+B ---- C deltaH=-100kj and temp.=25C which direction would the reaction shift if.. a. the concentration of A was decreased b. the concentration of C was increased c. The temp. was increased to 100C
*March 20, 2011*

**algebra**

I need to solve Y+15=18
*February 23, 2011*

**College Chemistry..Urgent!**

THE EQUILIBRIUM CONSTANT FOR A REACTION IS 2.48 AT 25 DEGREES CELSIUS. WHAT IS THE VALUE OF ΔG°(KJ)AT THIS TEMPERATURE? (R=8.314 J/K mol)
*December 8, 2010*

**COLLEGE CHEMISTRY**

THE EQUILIBRIUM CONSTANT FOR A REACTION IS 2.48 AT 25 DEGREES CELSIUS. WHAT IS THE VALUE OF ΔG°(KJ)AT THIS TEMPERATURE? (R=8.314 J/K mol)
*December 7, 2010*

**College Chemistry**

The eqm. Constant for a reaction is 2.48 at 25°C. what is the value of ΔG° (kJ) at this temperature? (R=8.314 J/k mol)
*December 6, 2010*

**College Chemistry**

The eqm. Constant for a reaction is 2.48 at 25°C. what is the value of ΔG° (kJ) at this temperature? (R=8.314 J/k mol)
*December 6, 2010*

**College Chemistry **

The question was written properly & I DID it copy word for word. And how you explained it, doesn't help.
*December 2, 2010*

**College Chemistry **

a 1.00-L solution saturated at 25°C with calcium oxalate (CaC2O4) contains 0.0061 g of CaC2O4. The solubility constant (Ksp) for this salt is [CaC2o4= 128.09 g/mol] a) 6x10^ -3 b) 4.6x10^ -8 c) 2.3x10^ -9 d) 1.5x10^-4 if you could please work it out for me, thank you
*December 2, 2010*

**College Chemistry Help Asap!**

Determine the values of Kp that correspond to the following values of Kc a)CO(g) + Cl2(g) <===> COCl2(g) Kc= 1.2 x 10^3 at 668 K b)2 NO(g)+ Br2(g)<===> 2 NOBr(g) Kc= 1.32 x 10^-2 at 1000 K c) 2 COF2(g)<===> CO2(g)+ CF4(g) Kc= 2.00 at 1000 degrees Celsius
*November 15, 2010*

**College Physiology**

At the venular end of the capillary, the hydrostatic pressure is? A) higher than the osmotic pressrue B) lower than the osmotic pressure C) equal to the osmotic pressure D) higher than the hydrostatic pressure at the arteriolar end of the capillary
*November 10, 2010*

**college chemistry**

What is the pH of the solution obtained by diluting 500 mL of 0.0200 M NH3 (aq) to 1.000 L ?
*November 9, 2010*

**College Chemistry Help Please!**

what is the pH of a solution that is 0.200 M in methylamine, CH3 NH2 CH3NH2+ H20<======> CH3NH3+ + OH- Kb= 4.2 x 10 ^-4
*November 9, 2010*

**COLLEGE CHEMISTRY**

Calculate the pH of a 0.052 NH4Cl aqueous solution
*November 9, 2010*

**College Chemistry**

Determine the values of Kc that correspond to the following values of Kp (a) SO2Cl2(g)--->SO2(g) + Cl2(g) Kp= 2.9 x 10^-2 at 303 K (b) 2 NO2 (g)--->2NO(g)+O2(g) Kp= 0.275 at 700 K (c)CO(g) + Cl2(g)---> COCl2(g) Kp= 22.5 at 395 degree Celsius
*October 27, 2010*

**Chemistry**

A 1.00-kg sample of Sb2S3(s) and a 10.0-g sample of H2(g) are allowed to react in a 25.0-L container at 713 K. At equilibrium, 72.6 g H2S(g) is present. What is the value of Kp at 713 K for this reaction? Sb2S3(s) + 3 H2(g) <----> 2Sb(s) + 3 H2S(g)
*October 27, 2010*

**chemistry**

A reaction starts with 1.00 mol each of PCl3 and Cl2 in a 1.00-L flask. When equilibrium is established at 250 degree Celsius in the reaction PCl3(g)+ Cl2(g)--> PCl5(g), the amount of PCl5 present is 0.82 mol. What is Kc for this reaction?
*October 26, 2010*

**geometry**

If AC = 20 centimeters, and BC = 16 centimeters, which does AB equal?
*October 5, 2010*

**Biology**

sex linked
*March 20, 2008*

**English**

What type of sentence is this? On July 4, 1976, the nation’s bicentennial, 10,741 American flags were flown over the U.S. Capitol, the largest number ever flown there in one day. It's a simple sentence with two appositives. Can you please help me with my english essay?
*March 6, 2007*

**MATH**

8%of 25 = ? 25 times .08 = your answer
*November 2, 2006*

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