Tuesday

April 21, 2015

April 21, 2015

Total # Posts: 214

**Chemistry**

Difference between hydration and hydrogenation reactions? I have searched everywhere in my book and all I can come up with is: Hydorgenation is when atoms of hydrogen H2 are added to the carbons in a double or triple bond of alkenes or alkynes to form what we call alkanes. ...
*February 10, 2008*

**Chemistry**

Is there someone out there that can tell me if I answered this right or if I need to study some more? Thanks What is it that makes water such a good solvent for polar substances? Why is it called the universal solvent? Water is such a good solvent for polar substances because ...
*January 31, 2008*

**Math**

We have to simplify complex numbers and I was wondering whether I did these problems correctly. 1. 4i^2-2i^3 = -4+2i 2. (-i)^3 = i 3. (the square root of a -2)^6= -8 4.1/(2i)^3 = i/8
*December 16, 2007*

**science**

what is the relative humidity of a kilogram of air at 25 degrees celcious that contains 10grams of water vapor
*October 2, 2007*

**Chemistry**

srry I placed the question in the wrong spot. The equation is 2NH3 <=> N2 + 3H2 1 mole of NH3 injected intoa 1L flask 0.3 moles of H2 was found the concentration of N2 at equlibrium is 0.1M how do I find the concentration of NH3 at equlibrium? (N2) = 0.1 (H2) = 0.3 ...
*May 8, 2007*

**early childhood**

Can someone please help me with this? I think I have the right answer--just need verification. Which statement most accurately describes "normal" growth and development of the pre-school child? 1.It occurs at a uniform rate for all chidren. 2.It is a simple process. ...
*April 11, 2007*

**Early Childhood Ed. Question--Please Help!**

To capitalize on children's different learning styles, teachers should: 1.teach lessons using a multi-sensory approach. 2.use their own learning style to teach and let the children match them. 3.separate children by learning styles and seat children near others like ...
*April 7, 2007*

**Early Childhood Ed..**

Would creating a sensory-rich classroom enviroment be an appropriate way for a teacher to help young children learn about aesthetics? I think that would be an exciting idea, and that children would enjoy it.
*April 7, 2007*

**Math**

A physician prescribes 3.5 mg. of medication each day. How many micrograms is this dosage? Thanx for the help! 1mg is 1000mcg. I am told that mcg is a "modern" abbreviation for microgram. So, I say 3.5 x 1000= 3500 mcg Right? thank you! correct What´s the ...
*February 28, 2007*

**Math**

A perscription calls for 5 ounces of medication. For how many millimeters is te perscription? (Use 1 ounce = 29.57 mL.) if 1oz = 29.57mL then you simply multiply: 29.57 x 5 Good job! Nice you are helping!
*February 27, 2007*

**Math--I need help!**

I have these two questions on my assignment. Please help me. 80 mi. = _______ km. 9 cm. = _______ m. 9cm (1m/100cm)=??? 80miles (1 km/1600m) one mile = 1.6093 km so 80 times 1.6093 = what? one cm = 1/100 m or .01 m so 9 cm = 9 times .01 = what? 9 cm = 0.09 m. 80mi.= 128.72km. ...
*February 27, 2007*

**Kim spent $20.00 on grocries. She had $50.00. how much did Kim spend?**

Kim spen $50.00 subtracted by $20.00 witch is $30.00 left!
*February 27, 2007*

**help!!**

what is the antomym for prohibit http://www.thesaurus.com =)
*January 16, 2007*

**Calculus**

Does x^4 * e^x have a horizontal asymptote? Take the derivative to see if slope is zero. dU/dx = x^4 * e^x = 4x^3 * e^x + x^4 * e^x So, what happens as x approaches neg large ?
*October 27, 2006*