Thursday

December 18, 2014

December 18, 2014

Total # Posts: 108

**chemistry**

Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C . Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons) with a ...
*February 4, 2008*

**math**

I need to make up ten numbers that are divisible by 2,3,4,5,6,8,9,10. Please help.
*January 17, 2008*

**FRACTIONS**

IF 20 COUNTERS ARE A WHOLE SET, WHAT FRACTION OF THE SET IS 16 COUNTERS?
*December 10, 2007*

**science**

A 52.0 kg male dancer leaps 0.37 m high. (a) With what momentum does he reach the ground? (c) As the dancer lands, his knees bend, lengthening the stopping time to 0.050 s. Find the average force exerted on the dancer's body. (d) Compare the stopping force with his weight...
*December 9, 2007*

**math**

13-b/6=2-0.5b/4 I cross muliptiled and I got 12-3b=52-4b. I'm stuck. What do I do now?
*November 1, 2007*

**Math**

Find all positive integers a<b<c (a is less than or equal to b, b is less than or equal to c) such that: arctan (1/a) + arctan (1/b) + arctan (1/c) = (pi/4)
*October 6, 2007*

**Literature**

Has anyone read the Strange Case of Dr Jekyll and Mr Hyde and/or The Time machine ?? if so,please let me know..as i have some questions thank you
*September 16, 2007*

**lattice math**

Why should we estimate before solving a problem? We should estimate before solving a problem to make sure our answer is close to the real answer. Here's a simple problem. Suppose we want to find wnat a 6% tax on a $10 purchase would be. When you do the math, the answer ...
*October 3, 2006*