They should ban this stuff
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15 January 2004, 10:44 PM
#12
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carl - I honestly should know that! However, after a number of years in the 'real world' it's shocking how much of my degree I've forgotten 
. Standard nomenclature lists the positive ion/group first, and uses the largest or precursor group as the stem of the name. Hence the logic of naming hydrogen first (no real precursor in this case).
. Standard nomenclature lists the positive ion/group first, and uses the largest or precursor group as the stem of the name. Hence the logic of naming hydrogen first (no real precursor in this case).
16 January 2004, 07:17 AM
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Depends which way you look at it, the oxide ion is assigned a charge of -2 so it is no more valid to group it OH -1 and H +1 or the H2 as a +2 and O as -2
Also, the molecule is symetrical so it makes no odds!
...O...
../.\..
.H...H.
I think in practise it is accepted that H2O is an oxide of hydrogen, although hydrides is valid in a binary compound consisting of only two elements.
[Edited by ajm - 1/16/2004 7:40:16 AM]
Also, the molecule is symetrical so it makes no odds!
...O...
../.\..
.H...H.
I think in practise it is accepted that H2O is an oxide of hydrogen, although hydrides is valid in a binary compound consisting of only two elements.
[Edited by ajm - 1/16/2004 7:40:16 AM]
16 January 2004, 09:45 AM
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Each year, Dihydrogen Monoxide is a known causative component in many thousands of deaths and is a major contributor to millions upon millions of dollars in damage to property and the environment. Some of the known perils of Dihydrogen Monoxide are: Death due to accidental inhalation of DHMO, even in small quantities.
Prolonged exposure to solid DHMO causes severe tissue damage.
Excessive ingestion produces a number of unpleasant though not typically life-threatening side-effects.
DHMO is a major component of acid rain.
Gaseous DHMO can cause severe burns.
Contributes to soil erosion.
Leads to corrosion and oxidation of many metals.
Contamination of electrical systems often causes short-circuits.
Exposure decreases effectiveness of automobile brakes.
Found in biopsies of pre-cancerous tumors and lesions.
Often associated with killer cyclones in the U.S. Midwest and elsewhere.
Thermal variations in DHMO are a suspected contributor to the El Nino weather effect.
Blimey! need a drink after reading all that
Prolonged exposure to solid DHMO causes severe tissue damage.
Excessive ingestion produces a number of unpleasant though not typically life-threatening side-effects.
DHMO is a major component of acid rain.
Gaseous DHMO can cause severe burns.
Contributes to soil erosion.
Leads to corrosion and oxidation of many metals.
Contamination of electrical systems often causes short-circuits.
Exposure decreases effectiveness of automobile brakes.
Found in biopsies of pre-cancerous tumors and lesions.
Often associated with killer cyclones in the U.S. Midwest and elsewhere.
Thermal variations in DHMO are a suspected contributor to the El Nino weather effect.
Blimey! need a drink after reading all that
16 January 2004, 11:15 AM
#20
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LOL 
Here's a link to a story about a school kid who used this in a school science project.
"In 1997, Nathan Zohner, a 14-year-old student at Eagle Rock Junior High School in Idaho Falls, based his science fair project on a report similar to the one reproduced above[DHMO]. Zohner's project, titled "How Gullible Are We?", involved presenting this report about "the dangers of dihyrogen monoxide" to fifty ninth-grade students and asking them what (if anything) should be done about the chemical. Forty-three students favored banning it, six were undecided, and only one correctly recognized that 'dihydrogen monoxide' is actually H2O -- plain old water. Zohner's analysis of the results he obtained won him first prize in the Greater Idaho Falls Science Far; garnered him scads of attention from newspapers, magazines, radio and TV stations, universities, and congresspeople; and prompted the usual round of outcries about how our ignorant citizenry doesn't read critically and can be easily misled. In other words, a tempest in a teapot."
Chris
Here's a link to a story about a school kid who used this in a school science project.
"In 1997, Nathan Zohner, a 14-year-old student at Eagle Rock Junior High School in Idaho Falls, based his science fair project on a report similar to the one reproduced above[DHMO]. Zohner's project, titled "How Gullible Are We?", involved presenting this report about "the dangers of dihyrogen monoxide" to fifty ninth-grade students and asking them what (if anything) should be done about the chemical. Forty-three students favored banning it, six were undecided, and only one correctly recognized that 'dihydrogen monoxide' is actually H2O -- plain old water. Zohner's analysis of the results he obtained won him first prize in the Greater Idaho Falls Science Far; garnered him scads of attention from newspapers, magazines, radio and TV stations, universities, and congresspeople; and prompted the usual round of outcries about how our ignorant citizenry doesn't read critically and can be easily misled. In other words, a tempest in a teapot."
Chris
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