Science & Mathematics - 1 December 2006

Pure potassium hydrogen phthalate is used for the standardization of the sodium hydroxide solution. Suppose that the potassium hydrogen phthalate is not completely dry. Will the reported molar concentration of the sodium hydroxide solution be too high, too low, or unaffected because of the moistness of the potassium hydrogen phthalate? Explain.

2006-12-01 13:22:40 · 1 answers · asked by ZG786 1 in Chemistry

2006-12-01 13:19:52 · 4 answers · asked by Atavan H{e}len 1 in Chemistry

Need sample Please

2006-12-01 13:14:10 · 7 answers · asked by ladybughulagirl 2 in Astronomy & Space

2006-12-01 13:14:05 · 5 answers · asked by Ashley 2 in Chemistry

Will anything bad happen (fire)?

2006-12-01 13:12:55 · 13 answers · asked by TJ L 1 in Other - Science

2006-12-01 13:09:00 · 2 answers · asked by Anonymous in Engineering

Are the planes x+3y-z=2 and 3x-y=11 perpendicular?Explain.

2006-12-01 13:08:31 · 2 answers · asked by kondiii 1 in Mathematics

Because before when i wasn't eating very healthy food, my erection size was huge
+ it was very strong.

But when i started to eat healthy food my erection size is alot smaller and has no hardness

what do you think is the cause of this? are there any explaintions for this?
Also what could i do to imprpve my erection/erections?

And please no stuipd answers, serious only. cheers =]

2006-12-01 13:08:21 · 9 answers · asked by Anonymous in Biology

The minimum theoretical stopping distance of a fork/lift truck traveling at 16km/hr is 8.5m. however tests have shown that if it stops that quickly it will weither lose its load or tip forward and in fact the minial stoppping distance is 10m. Therefore:

a) explain why a suddent stop will cause the load to shift forward and why the whole truck may tip at the same time? and

b) explain why it is dangerous to drive a fork lift truck with its load raised use equations.

2006-12-01 13:08:18 · 4 answers · asked by susiebondi 1 in Physics

2006-12-01 13:08:01 · 19 answers · asked by tricia l 2 in Other - Alternative

Xc = _1_
piefC

Capacitive Reactance (Xc) in Ohms
Frequency (f) in Hz
Capacitance (C) in Farads in a electrical circuit
Taking 2pie as equal to 6.284

a) how i make 'f' the subject?

b) how do i calculate f when Xc = 318.47 Ohms, C = 1uF (equivalent to 1x10exp-6F)

im really stuck :(

2006-12-01 13:05:09 · 4 answers · asked by Anonymous in Engineering

Hi,

I taking pre-calculus right now and its driving me crazy!!! The section were on (verifying trigonometric identities) is making my head hurt. Is there a simple way to do them? My pre-calc teacher is saying that i should start with the complicated side and work it through. The problem is that i don't understand how to get what. My homework is driving me crazy HELP!.

If anyone is out there that can explain how to do this, I really appreciate your help. Thank you.

2006-12-01 13:02:04 · 5 answers · asked by Fastidious. 2 in Mathematics

2006-12-01 12:54:53 · 6 answers · asked by Vee 5 in Botany

If 27% of the bases in a certain segment of DNA were adenine, what would be the percentage of (Hint: Which base will have the same percentage as adenine):
a)thymine -
b)cytosine -
c)guanine -

2006-12-01 12:49:43 · 6 answers · asked by Anonymous in Biology

astronomy

2006-12-01 12:48:34 · 4 answers · asked by badfish 1 in Astronomy & Space

Can someone get me started on this? I do not want you to actually solve the equation. Thank you!

2006-12-01 12:47:45 · 5 answers · asked by AlaskaGirl 4 in Mathematics

Need to figure out what the answer is to set this to zero in order to include it in a 4 page term paper. Help please? I'm not good at this format of a problem. Thanks!

2006-12-01 12:46:59 · 5 answers · asked by Knight_of_Sarcasm 2 in Mathematics

I have read a chapter of Biology and still not able to answer this question. Can someone help?

2006-12-01 12:44:07 · 4 answers · asked by Anonymous in Biology

How Do they research

2006-12-01 12:43:03 · 15 answers · asked by snissari 2 in Physics

If a section of DNA that was transcribe has the sequence:
A – T – C
What would be the corresponding:
a)codon on mRNA
b)anticodon on tRNA
I have a finish reading a chapter in my biology book, but I am still not sure how to answer this question. Can someone smart help me out here?

2006-12-01 12:42:19 · 4 answers · asked by Anonymous in Biology

2006-12-01 12:40:59 · 8 answers · asked by Anonymous in Zoology

2006-12-01 12:39:10 · 18 answers · asked by kruella 2 in Biology

A cylinderical shaped metal rod is used to conduct heat. When the temperature at one end is 100 degree Celsius and at the other end is 20 degree Celsius, heat is transferred at a rate of 16 J/s. The rod is then stretched uniformly to twice its original length. If again it has ends at 100 degree Celsius and 20 degree Celsius, at what rate will heat be transferred between it ends?

The answers that are given to me are:
4 J/s
8 J/s
32 J/s
2 J/s
64 J/s
16 J/s
1 J/s

2006-12-01 12:36:41 · 2 answers · asked by mastersource2005 5 in Engineering

A cylinderical shaped metal rod is used to conduct heat. When the temperature at one end is 100 degree Celsius and at the other end is 20 degree Celsius, heat is transferred at a rate of 16 J/s. The rod is then stretched uniformly to twice its original length. If again it has ends at 100 degree Celsius and 20 degree Celsius, at what rate will heat be transferred between it ends?

The answers that are given to me are:
4 J/s
8 J/s
32 J/s
2 J/s
64 J/s
16 J/s
1 J/s

2006-12-01 12:35:59 · 2 answers · asked by mastersource2005 5 in Physics

Help guys. PLeeeeeeeease

2006-12-01 12:35:54 · 6 answers · asked by Anonymous in Mathematics

5 (part 1 of 3)
A block is at rest on the incline.The coefficients of static and ki-
netic friction are ¹s = 0:49 and ¹k = 0:42, respectively.
The acceleration of gravity is 9:8 m/s2. The mass is 31 kg.
The angle of the incline is 23 degrees. What is the frictional force acting on the 31 kg mass? Answer in units of N.
(part 2 of 3)
What is the largest angle which the incline can have so that the mass does not slide down the incline? Answer in units of degrees.
(part 3 of 3)
What is the acceleration of the block down the incline if the angle of the incline is 33 ± ? Answer in units of m/s2.

2006-12-01 12:34:21 · 1 answers · asked by kavita 1 in Physics

I work in a school of Mongolia. I need a financail aid to study in America. I think that it will improve my life. I have two children 6 years boy and 3 year girl. Mongolia is one of the developing countries. I have not that much money to study in America. Please help me.

2006-12-01 12:32:29 · 3 answers · asked by boldisu 1 in Mathematics

There is a chemical that has been used for well over one hundred years and its use must be stopped! The Association for Environmental Activism is dedicated to seeing that its use comes to a swift end. Dihydrogen monoxide (DHMO) is colorless, odorless, tasteless and kills thousands of people every year. Most of these deaths are caused by accidental inhalation of DHMO, but the dangers of dihydrogen monoxide do not end there.

Prolonged exposure to its solid form causes severe tissue damage. Symptoms of DHMO ingestion can include excessive sweating and urination, possibly a bloated feeling, nausea, vomiting, and body electrolyte imbalance.

Contamination is reaching epidemic proportions in many modern societies. Dozens of arid countries have spent millions of dollars in research money to extract it in its pure form from our planet's oceans. Quantities of dihydrogen monoxide have been found in almost every stream, lake, and reservoir in America today. But the pollution is global, and the contaminant has even been found in Antarctic ice. DHMO has caused millions of dollars of property damage in the midwest and recently in California.

Despite the danger, dihydrogen monoxide is often used as an industrial solvent, in nuclear power plants, in the production of styrofoam and as a fire retardant.

Pharmaceutical companies have put DHMO to use in large quantities in conjunction with many forms of cruel animal research. It has been linked to the distribution of pesticides and is often sprayed on crops of all kind. Even after washing, produce remains contaminated by this chemical.

Nutritionists have recognized DHMO as an additive in certain food products for decades but have been reluctant to speak out to the public about the vast quantities of this chemical being used in most foods.

Companies dump waste DHMO into rivers and the ocean, and nothing can be done to stop them because this practice is still legal. The impact on wildlife is extreme, and we cannot afford to ignore it any longer!

The horror must be stopped!

Our government has refused to ban the production, distribution, or use of this damaging chemical due to its "importance to the economic health of this nation." In fact, the Navy and other military organizations are conducting experiments with DHMO, and designing multi-billion dollar devices to control and utilize it during warfare situations.

Hundreds of military and civilian research facilities receive tons of it through a highly sophisticated underground distribution network. Many store large quantities for later use. It's not too late! Act NOW to prevent further contamination. Find out more about this dangerous chemical. What you don't know can hurt you and others throughout the world!


The Facts:
Also called hydroxl acid or dihydrous oxide, it is a component of acid rain.
It contributes to the "greenhouse effect."
It may cause severe burns as a vapor.
It contributes to the erosion of our beautiful natural landscape.
Accelerates corrosion and rusting of many metals and may be affecting your car.
Causes electrical failure and decreased effectiveness of automobile brakes.
It has been found in excised tumors of terminal cancer patients.

The Deadly Statistics:
In the year 2000, according to the Children's Safety Zone,
There were a total of 210 reported DHMO related incidents.
64 Deaths. Out of those 64, 28 were children and 36 were adults.

2006-12-01 12:31:26 · 12 answers · asked by Anonymous in Chemistry

The percentages to the left equal to 100%. So, based on the grade numbers to the right, what is the final average grade in TOTAL?

25% = 80%
25% = 85%
25% = 80%
10% = 78%
10% = 100%
5% = 96.89%

Thanks!!!!!

2006-12-01 12:27:45 · 4 answers · asked by Anonymous in Mathematics

2006-12-01 12:27:39 · 4 answers · asked by ken 1 in Chemistry