Thursday
November 27, 2014

Posts by lulu78


Total # Posts: 22

physiology
The question is basically asking which one of the 5 are not involved with the blood homeostasis properties. I have since figured it out. the answer is A as it is not homeostasis/negative feedback. all the others can be reverse/taken to completion.
July 19, 2011

physiology
blood helps maintain homeostasis by all of these mechanisms EXCEPT: a. eliminates waste products b. protects about foreign substances c. transports nutrients and gases d. regulates pH e. clot formation I dont totally understand this question. I know that if O2 levels decrease ...
July 19, 2011

physiology
Discuss the similarities and differences between the skeletons of the upper and lower extremities and relate findings to function.
May 16, 2011

physiology
Discuss the similarities and differences between the pelvic and pectoral girdles and relate findings to function.
May 16, 2011

physiology
what are the parts of the cerebrum the receive and interpret somatic senory signals? I have searched my ext just cant find the answer.
April 22, 2011

CHEMISTRY
how many mls of glycerol (FW= 92.1; density=1.26g/ml) must be used to make 250ml of a 0.15 M solution
October 16, 2010

CHEMISTRY
i thought pi was 0.217? the answer in the text is 1.39*10^4g
October 15, 2010

CHEMISTRY
Lysozmyne is an enzyme that breks bacterial cell walls. A solution containing 0.150g of this enzyme in 210ml of solution has an osmotic pressure of 0.217kPa at 25*C. What is the molar mass of Lysozmyne? I cant find the chemical formula anywhere. I have used the osmotice ...
October 15, 2010

CHEMISTRY
Dr BOB can you explain this to me. I am so struggling with this subject. NO one has helped me on this one yet can anyone help me? during a typical breathing cycle the CO2 concentration in the expired air rises to a peak of 4.6% by volume. Calculate the partial pressure of the...
October 15, 2010

CHEMISTRY- boiling point
is the Kb 0.51 just standard BP of water? i think thats where i'm getting lost.
October 15, 2010

CHEMISTRY- boiling point
can you show me. i'm confused.
October 15, 2010

CHEMISTRY- boiling point
0.1m aqueous solution of HCl and 0.1m aqueous solution of C6H12O6. calculate the boiling point of each i know the eq. dTb=Kbm but i have no temperatures. this is the question
October 15, 2010

CHEMISTRY
so do i use the moles i would have from part A? surely not, becayse they just give me the mole fraction of the solution. what do i use? i have the answer of 0.472- dont know how to get it. i feel so dumb and have my exam on 23rd.
October 15, 2010

CHEMISTRY
thenkyou. i missed reading that pert on that page before. i knew it was something simple. i now have parts A and B but how do you work out C? i have the mole fraction of ethanol from part A. why is it not the same?
October 15, 2010

CHEMISTRY
At 63.5 degreesC, the vapour pressure of H2O is 23.3kPa and that of ethanol is 53.3kPa. A solution is made by mixing egual masses of H2O and C2H5OH. a. what is the mole fraction of ethanol in the solution? b. assuming ideal-solution behaviour, what is the vapour pressure of ...
October 15, 2010

CHEMISTRY
any help will do?
October 14, 2010

CHEMISTRY
Dr BOB can you explain this to me. I am so struggling with this subject. during a typical breathing cycle the CO2 concentration in the expired air rises to a peak of 4.6% by volume. Calculate the partial pressure of the CO2 at this point, assuming 1 bar of pressure. what is ...
October 14, 2010

CHEMISTRY
i have another question on this silly topic further up if your fresh and ready again.
October 14, 2010

CHEMISTRY
so the rest is good then?
October 14, 2010

CHEMISTRY
dumb question? why is it 100g not 0.1kg? the rest i get/got.
October 14, 2010

CHEMISTRY
i dont understand why i cant get this. I have the answers but i dont get them. i did 20g/65.4g/mol= 0.306mol, then 0.306mol/0.1kg= 3.058m, but the answer they have is 3.82m. then the next step still confuses me.
October 14, 2010

CHEMISTRY
brass is a subtitutional alloy consisting of a solution of copper and zinc. a particulae sample of red brass consisting of 80% copper and 20% zinc by mass has a density of 8750kg/m^3. a. what is the molality of zinc in the solid solution and B. what is the molarity of zinc in ...
October 14, 2010

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