Science & Mathematics - 28 November 2006

2006-11-28 10:30:36 · 3 answers · asked by Anonymous in Mathematics

Normal Saline is said to have a pH of 5.5. Please explain chemically why this is the case

2006-11-28 10:30:20 · 7 answers · asked by johnk 1 in Chemistry

( I just want to compare my anwer with some of you)

if four-seventh of the students at a certain university are male, and the female enrollment is 3600, what is the total enrollment?

2006-11-28 10:29:37 · 4 answers · asked by Nathan D 1 in Mathematics

2006-11-28 10:29:24 · 1 answers · asked by Anonymous in Mathematics

if infinity is an uncountable number then what is one number before it?
My wife says its equally uncountable, but if that was the case then it would continue until such a point as you could identify where inifinty was. so what is the number before infinity?

2006-11-28 10:29:20 · 20 answers · asked by D1G1T4L5W1F35_HUSBAND 2 in Mathematics

For my entire life, I've wanted to be a physician. However, I'm facing several problems. For my undergraduate degree, I was thinking of persuing Culinary Art, as cooking is my second passion, but I am facing opposition from my parents. Now, I have spoken to several physicians that have undergrad degrees in nonscience disciplines, and they highly recommend it. I've also read that the medical school admissions like to see these types of degrees, because they prefer to maintain a diverse population of students. I will, of course, take the additional required classes for medical school. I'm a strong student, especially in the sciences, so I'm not worried about struggling in med school. I was hoping that I could get some advice from any physicians or medical students. Any input (from anyone) regarding my situation would be greatly appreciated.
Thank You

2006-11-28 10:26:59 · 7 answers · asked by scapulagirl1990 2 in Medicine

2006-11-28 10:26:56 · 1 answers · asked by Bhaumik P 1 in Astronomy & Space

what is it called when a number has two vertical lines on either side of it? For example |-4| or |4| what is this called, or what does it mean/do?

2006-11-28 10:25:37 · 15 answers · asked by rejectedplushie 1 in Mathematics

could you tell me stuff like :
A)color
B)streak
C)specific gravity
D)Hardness
E)crystal system
F)cleavage
G)fracture

2006-11-28 10:24:00 · 3 answers · asked by ♪♫Lynn♫♪ 5 in Chemistry

2006-11-28 10:22:41 · 5 answers · asked by malindaharvey1 1 in Medicine

2006-11-28 10:22:27 · 3 answers · asked by bahaa s 1 in Geography

Calculate the percent yield (%) if 18.862 g of BaSO4 precipitates
when 2.150 L of 0.0600 M BaI2 and 1.980 L of 0.0501 M MgSO4 (aq) are mixed.

2006-11-28 10:22:26 · 2 answers · asked by simonkf2002 1 in Chemistry

a) 4arccos(3x) + 2x sqrt (1-9x^2)
b) 3arccos(4x) + 2x sqrt (1+9x^2)
c) 4arccos(3x) + 6 sqrt (x^2-9x^4)
d) 3arccos(4x) + 6x sqrt (1+9x^2)
e) 4arccos(3x) + 2 sqrt (1-9x^2)


How in the world do you know? I get the first part you take the arccos of 3x and then you plug it in for theta 4arccos. But I don't understand the rest. I tried using double angle formulas but got nowhere. Thanks.

2006-11-28 10:22:10 · 2 answers · asked by Anonymous in Mathematics

a) H2SO4 and HSO4-
b) H3O+ and OH -
c) HClO and HCl
d) HCl and Cl -
e) HF and F -

2006-11-28 10:21:41 · 2 answers · asked by simonkf2002 1 in Chemistry

For statements a) through d) use the reaction:


Cu(s) + 2Ag+(aq) --> 2Ag(s) + Cu2+(aq)



a) Cu is the oxidizing agent

b) Ag+ is the oxidizing agent

c) Cu is oxidized

d) Ag+ is oxidized

e) HCl(g) + NH3(g) --> NH4Cl(s) is a redox reaction

f) O3(g)(aq) + NO(g) --> O2(g) + NO2(g) is a redox reaction

2006-11-28 10:20:32 · 2 answers · asked by simonkf2002 1 in Chemistry

2006-11-28 10:19:39 · 2 answers · asked by brittanimorris_85 1 in Mathematics

2006-11-28 10:18:35 · 10 answers · asked by johnk 1 in Medicine

2006-11-28 10:18:21 · 9 answers · asked by hacboat 1 in Earth Sciences & Geology

2006-11-28 10:17:29 · 7 answers · asked by giojoshjosiah 1 in Botany

Is it 4
and by a triple bond is it 6
am i right

2006-11-28 10:17:28 · 4 answers · asked by Ballerina 1 in Chemistry

Consider an experiment in which two marbles are drawn from an urn at the same time. If the urn contains 3 white marbles and 2 red marbles, what is the probability that both marbles will be white? (I appreciate the answers, but someone respond back with an explanation to the answer)

2006-11-28 10:16:40 · 4 answers · asked by Nathan D 1 in Mathematics

When a cloud comes back down, what makes it convert into rain, hail, or snow?

2006-11-28 10:16:23 · 10 answers · asked by gone 4 in Weather

which compound will precipitate?

2006-11-28 10:16:20 · 1 answers · asked by simonkf2002 1 in Chemistry

has to do with math

2006-11-28 10:13:07 · 3 answers · asked by richyrichchick 1 in Mathematics

2006-11-28 10:12:08 · 0 answers · asked by jay 3 in Biology

There are two general types of heat; “Sensible” and “Latent.” Sensible Heat describes a process where the temperature changes as heat is added or removed. The definition of “Heat Capacity” plays a significant role in sensible heat; it is the ability of a substance to store heat. For pure water, the heat capacity is 1 cal / g °C (1 calorie per every gram of water per every degree change in Celsius), or in words; if I have 1 gram of water and I want to raise it 1°C, I must add 1 Calorie of heat.

2006-11-28 10:11:57 · 4 answers · asked by sunshine 1 in Physics

2006-11-28 10:09:36 · 6 answers · asked by Shante R 1 in Mathematics

2006-11-28 10:09:35 · 3 answers · asked by Katpil 1 in Zoology

i've been given the assignment of studying an "end of the world" scenario, and i chose the sun's solar flare directly striking the Earth. If you know anything or can provide me any resources, it would be much appreciated.

2006-11-28 10:07:40 · 4 answers · asked by itsjeremy6 2 in Astronomy & Space

2006-11-28 10:07:32 · 8 answers · asked by Katpil 1 in Astronomy & Space