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Dr Michael Eric Tunstall
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∙ 11y ago
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When was silver invented?
it was never invented.
Who invented the chemical?
scientist invented the chemical
When was the first toothpaste invented?
I invented the toothpaste
Who invented the ferrous metal?
No one invented ferrous metal. It is iron (Fe) which is an element, this was discovered not invented.
When where the first oxygen tanks invented?
The first thing similar to an oxygen tank that was invented was invented in 1868
What is entonox?
Entonox is a mixture of two gases: nitrous oxide (N2O) and oxygen (O2).
What is entonox and what is it used for?
It's a mixture of nitrogen and oxygen gasses - it's used as an anaesthetic in hospitals.
Which two gases and in what ratio do entonox cylinders contain?
This anesthetic gas mixture contain 50 % nitrous oxide (N2O) and 50 % oxygen (O2).
What gas do people use when having a baby?
Pain relieving gas is often used to relieve labour pain. Entonox is a mixture of oxygen and nitrous oxide (laughing gas). It is designed to provide as good a pain relief as possible without causing undue sleepiness. The gas works quickly, but takes about 30 to 45 seconds to have an effect.
Who invented the abacus when it was invented why it was invented and who invented it?
jv
When was the CD player invented and who invented it?
The CD was invented in 2001 Thomas clamps invented it.
When invented resistor?
invented in 500BC before electricity was invented
When was the phone chargers invented?
Gloria Mejia invented it and she invented it in 1998
When was snickerdoodles invented and where?
When and where were snickerdoodles invented Why were snickerdoodles invented
When was the washboard invented?
who invented the washboard?
Is the computer invented or not?
Yes, the computer is invented.
What is the past participle of invented?
Invented is the past participle of the verb invent. verb /past /past participle = invent /invented /invented
