Introductory Courses

Need help with net equation

Need help with net equation

Pb(NO_3)_2 (aq) + 2Kl (aq) -> Pbl_2 (s) + 2KNO_3 (aq)
What is correct net equation?
If could go step by step really would be helpful, as always thanks for the help, maybe when I get more used to biology, I can start helping out others to

gamingwings   1241   2 Replies

gamingwings

serial dilutions C1 x V1 = C2 x V2

serial dilutions C1 x V1 = C2 x V2

Hello,
The question is calculate the amount of stock solution you need to make 5 mL of a 0.1mM solution from a 1.0 M stock, using the formula of C1 x V1 = C2 x V2. I know I should first change the 1.0 M to 1000.0 mM and the c stands for concentr

oldcollegelady   11655   3 Replies

bio_man

reading an absorption graph?

reading an absorption graph?

Hello again, can you tell me how to read an absorption chart. Maybe give me an example of a web site that shows me how? thanks

oldcollegelady   2276   1 Reply

bio_man

APbio lab cellular respiration

APbio lab cellular respiration

We did a lab in AP Bio and we placed germinated peas, dry peas with glass beads, and glass beads in seperate respirometers and recorded all the data and the good stuff but now i need help with these
1-Explain what the purpose of the glass bead r

rcanzius   2450   2 Replies

bio_man

What is polar/nonpolar?

What is polar/nonpolar?

What is polar/nonpolar?

gamingwings   14239   1 Reply

bio_man

Can you proofread my paper?

Can you proofread my paper?

For grammatical error or if it doesn't make sense, contirdict myself or confusing, etc?
Thanks

gamingwings   1913   5 Replies

bio_man

Help with writing lab summary

Help with writing lab summary

For the title it says. "The title should indicate what the laboratory report is about. It should be brief, start
with a key word, and indicate the nature of the investigation. "
What does nature of the investigation mean? I

gamingwings   1443   1 Reply

sarah!

Hi again, need help with effect of salt, ph, and detergents on cells

Hi again, need help with effect of salt, ph, and detergents on cells

Need help with effect of salt, ph, and detergents on cells.
generally speaking, which would have the highest and lowest effect on cells?

Thanks once again!

gamingwings   1426   2 Replies

gamingwings

How tough is a mosquito?

How tough is a mosquito?

I've been wondering about this, and I've noticed that sometimes if you hit a mosquito hard enough then you may look and see it splattered on the wall.

Therefore my question is this: If you swat a mosquito and it doesn't hit

Ryn1001   1084   1 Reply

bio_man

Does propanol, ethanol, or methanol do more damage (Biology)?

Does propanol, ethanol, or methanol do more damage (Biology)?

Hi there,

I am doing a report on the affect of alcohol on membranes. However, I am puzzled by the fact that I do not understand if I get a high absorbency number if it does more damage or less. My thought was that the higher, the more dama

gamingwings   2173   2 Replies

gamingwings

Does molecular size affect membrane damage?

Does molecular size affect membrane damage?

Does molecular size affect membrane damage?

Thanks!

gamingwings   1288   1 Reply

biology101

reaction between magnesium hydroxide and hydrochloric acid

reaction between magnesium hydroxide and hydrochloric acid

Hello,

The question is as follows that I need to know to study for my exam.
Rolaids is an antacid which contains magnesium hydroxide. Using this information, write the reaction that shows what happens when you take a Rolaids tablet to

oldcollegelady   6650   3 Replies

bio_man

Project help!

Project help!

Ok so I have to do a project on the freshwater biome of a pond/ lake. one of the things I need to do is describe a symbiotic relationship for my biome, but I can't find one anywhere! If anyone can help me with this please do, it's due the 2

Fandango   4647   3 Replies

bio_man

preparing unbuffered and buffered solutions of 20mM sucrose

preparing unbuffered and buffered solutions of 20mM sucrose

In the lab is the follwoing stock solutions:
0.1 M (100.0 mM) sucrose
0.2 M(200.0 mM) acetic acid
0.2 M(200.0 mM) sodum acetate
0.2 M (200.0mM) anhydrous sodium carbonate
0.2 M (200.0mM) sodium bicarbonate

The acet

oldcollegelady   5611   5 Replies

Biology Forums

bioloigy lab

bioloigy lab

I am trying to do this pre-lab stuff and the lab manual doesn't explain things well. Thanks if you can help.......Calculate the amount of 0.1 M sucrose solution and the amount of dH2O needed to prepare 100 mL of unbuffered 20 mM sucrose. I am fo

oldcollegelady   1198   3 Replies

bio_man

wrtiting a hypothesis

wrtiting a hypothesis

heyy! I am doing a science lab report and my problem is this:
1.   Are corn seeds of type I (no treatment) and type II (heat treatment) viable?
2.   Does the heat exposure affect corn seed viability?

is this hypothesis a good one?

myribaumann   1900   2 Replies

sarah!