Oxygen was discovered independently by Joseph Priestley and Karl Scheele in 1774.
No, oxygen-17 and oxygen-18 are different isotopes of oxygen. They differ in the number of neutrons each atom contains. Oxygen-17 has 8 protons and 9 neutrons while oxygen-18 has 8 protons and 10 neutrons.
4 liters of oxygen is 100% oxygen because the volume is entirely filled with oxygen.
An oxygen conserving device delivers oxygen to the user only when they inhale, as opposed to continuously flowing oxygen. This helps to reduce the amount of oxygen wasted during exhalation and increases the efficiency of oxygen delivery.
Most oxygen molecules are composed of two atoms of oxygen, and we frequently refer to oxygen as O2 (or O2) for this reason. Oxygen can also exist as the molecule called ozone, which is O3. Ozone is unstable, and will revert to O2 in a few minutes.
From areas of high oxygen concentration to low oxygen concentration, diffusion occurs as oxygen molecules move down their concentration gradient, from where there is more oxygen to where there is less oxygen. This process enables the cells in the body to take in oxygen and use it for cellular respiration, supporting various physiological functions.
well he got descoverd in the 1895and so did some other people
olivia
sarah malcome
1743
usher
1920
1974
flamsteed
J.J Thomson
1898 in United Kingdom
Alfred wegener
Argon was isolated in 1894.