Total # Posts: 313
how would you make a 4% percent paraformaldehyde solution? Work: starting from 20% (diluted with PBS) V1C1=V2C2 (100)(20)=(x)(4) x=500 so add 496 ml of PBS (accounting for 4% paraformaldehyde) or would you add 500ml of PBS Thank you
September 16, 2007
american history please help very important
I need to do very good on this and i have to find 4 events before ferdands murder that led up/contributed to the start of world war 1. And i have to give specific examples. Please help me out!!!! It would mean so much
September 15, 2007
Too make a 4% solution of paraformaldehyde from a 20 % solution. C1V1=C2V2 (20)(10ml)= (4)(x) x= 50ml so I would need to add 45ml of PBS and 4ml of the paraformaldhyde. Is that right.
September 9, 2007
I wanted to double check how to go about creating a 1% solution and a 4% solution. I know that it is 1 part to 99 and 4 part to 96. so I add 1ml of solution and then water and the same for the four percent. I wanted to know if you also had any good site to understand making ...
September 6, 2007
If your baby does not like cold apple juice, it should be heated. That isn't really a dangling modifier because "it should be heated" comes directly after "juice." However, to make the sentence clearer, you could say, Apple juice should be heated if ...
July 13, 2007
What is the tourism like in El Salvador? Thank you for using the Jiskha Homework Help Forum. Here are some sites for you to visit: 1. http://www.lonelyplanet.com/worldguide/destinations/central-america/el-salvador 2. http://www.puntamango.com/tours_cultural.asp 4. http://www....
May 15, 2007
Can someone please help me with this question?: What is the United States doing to improve Iraq's infrastructure? Trying to pay citizens there to rebuild it as fast as some of the other citizens destroy it. Guess who is paying? So, the US is paying citizens of Iraq to ...
December 16, 2006
Find the zeroes of the function y=3x^3-3x So I factored that to y=3x(x^2-1) but am not sure about the zeroes. I know that 0 and 1 are zeroes, but am not sure how to get a zeroe from x^2. Thanks. Factor it again to get 3x (x+1)(x-1) The zeroes are where any factor is zero, ...
December 14, 2006
Acetylcholine is known to increase the contractility of smooth muscle. And norepinephrine is known to decrease the contractility of smooth muscle. Oxytocin is a hormone that causes uterine contractions. Correct? I did an experiment with a lab rat. We removed the ovaries and ...
December 11, 2006
why do good oxidizing agents easily reduce? Good (strong) oxidizing agents are easily reduced. What you said I think differs slightly from that. If they are strong oxidizing agents, they easily oxidize other ions and in doing so the oxidizing agent is reduced. If this isn'...
December 4, 2006
I was just wondering if it would make any difference if one were to use calcium bromide solution instead of sodium bromide solution. It depends on what you are using if for.
December 3, 2006
I need help finding action-packed words... and several other things cause the mid-term marks are gonna be tomorrow so I gotta boost my mark up before I fail... Action-packed verbs are those that are very specific and vivid -- that is, they give the reader a "living" ...
November 8, 2006