Tuesday

September 16, 2014

September 16, 2014

Total # Posts: 10

**Chemistry**

Calculate the density of a substance in pennyweights that has a volume of 0.287hogsheads and a mass of 55.25kg. 1 pennyweight= 1.55g 1 hogshead=238.5 liters 1 peck=9.091 liters Answer in pw/pk.
*September 28, 2013*

**math**

can someone please explain to me what happens to the mean and standard deviation of the distribution of sample means as the size of the sample decreases?
*February 11, 2013*

**CHEMISTRY URGENT!**

a sample of oxygen that occupies 1.00 x 10^6mL at 575mmHg is subjected to a pressure of 1025atm. what will the final volume of the sample be if the temperature is held constant? how do uu set up the equation
*February 3, 2013*

**chemistry**

a sodium hydroxide solution was prepared according to the procedure outlined in this weeks experiment. This sodium hydroxide solution was standardized by by titration against exactly 10mL of a 0.28M hydrochloric acid solution. In three titrations, the volumes of the sodium ...
*November 25, 2012*

**chemistry**

__NH3(g) + __ O2(g) → __ N2(g) + __ H2O(g) When the reaction above is completely balanced, the coefficient for NH3 will be (a) 2. (b) 3. (c) 4. (d) 6.
*January 13, 2012*

**statistics**

A researcher wants to select 6 participants from the following data set using systematic sampling. The 12th participant is randomly selected. x=(1,2,3,4...48) 1. Find all of the selected participants. 2. How would youre answer differ if the last participant were randomly ...
*August 29, 2011*

**college math**

I assume it's .80300000
*January 6, 2009*

**college math**

convert to decimal notation. 8.03 x 10^7
*January 6, 2009*

**college algebra**

thank you
*November 26, 2008*

**college algebra**

Describe two laws of exponents and provide an example illustrating each law. Explain how to simplify your expression. How do the laws work with rational exponents? Provide the class with a third expression to simplify that includes rational (fractional) exponents
*November 26, 2008*

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