Sentences with phrase «of hydrogen atoms»

Whenever a pair of hydrogen atoms is missing the adjacent carbon atoms must form a double bond which produces a weak link in the carbon chain.

All fatty acids consist for the most part of a chain of carbon atoms with varying numbers of hydrogen atoms attached to them.

In the universe that consisted of hydrogen atoms alone, the sum total of occasions of experience must have been minimal in cosmic history.

It is a distance smaller than the width of a hydrogen atom.

The diamond - like structural unit consists of six - sided rings of carbon atoms bonded together in chains surrounded by a halo of hydrogen atoms.

Now, oddly, a pair of physicists has found that the same formula emerges from a routine calculation in the physics of the hydrogen atom — the simplest atom there is.

One unit is designed for conventional MRI scans based on magnetic properties of hydrogen atoms.

This is the first detection of the predicted flux of hydrogen atoms, which may one day provide early warning of approaching solar storms.

A caption incorrectly referred to hydrogen molecules, instead of hydrogen atoms.

When the researchers studied other hydrogen - based materials, about one - third of the hydrogen atoms were missing there too.

Water contains lots of hydrogen atoms, with mass of 1 atomic mass unit.

The word «saturated» here refers to the number of hydrogen atoms surrounding each carbon atom.

What makes one fat different from another is the length and shape of the carbon chain and the number of hydrogen atoms connected to the carbon atoms.

The fundamental question to ask about cosmic evolution is why the universe that at one time consisted of hydrogen atoms and nothing else didn't just stay that way?

The properties of the hydrogen atom are known with high accuracy.

While the nucleus of a normal hydrogen atom has a single subatomic particle called a proton, the nuclei of the hydrogen atoms in heavy water have both a proton and a neutron — another type of subatomic particle that weighs the same as a proton.

MRI detects the nuclei of hydrogen atoms in the water in a sample.

For perspective, the diameter of a hydrogen atom is about 1.0 Angstroms.

To use your molecular weight example, the calculated mass of the hydrogen molecule, H2, depends on the accuracy of the measured mass of the hydrogen atom, but also on the accuracy of the hypothesis: «the mass of a molecule is the sum of the masses of its constituent atoms».

This yields a theoretical description of how external light rays affect the energy levels of the hydrogen atoms trapped inside the fullerenes.

To directly determine the positions of hydrogen atoms within AAT, the ORNL - led team turned to neutron diffraction techniques.

Experiments with this DNA origami positioning device showed that it could be capable of precisely placing molecules, adjusting the distance between them in steps as small as the radius of a hydrogen atom.

«This study highlights how neutrons are an unrivaled probe for identifying the location of hydrogen atoms in biological systems, providing us with an unprecedented level of structural detail for this important enzyme,» LADI - III beamline scientist Matthew Blakeley said.

I just decided to drink water, but the thoughtless plunge of hydrogen atoms into my stomach's acid bath turned me away.

Miao and his team used a technique known as scanning transmission electron microscopy, in which a beam of electrons smaller than the size of a hydrogen atom is scanned over a sample and measures how many electrons interact with the atoms at each scan position.

While creationists claims is like finding a hydrogen atom among several universes worth of hydrogen atoms.

Another case was Prout's theory that the atoms of all elements are composed of hydrogen atoms, which implied that the atomic weights of all elements should be whole numbers (integers).

Remote observations of hydrogen atoms by NASA's Odyssey spacecraft in 2002 hinted that ice might be locked in the top metre of soil at lower latitudes.

The emergence of chemistry had a transformative effect on the universe because of a peculiar property of atomic hydrogen: If you take a big cloud of hydrogen atoms and let it collapse, it gets hotter and hotter until all the bound - up energy keeps it from shrinking any further.

Looking at Comet ISON's chemical fingerprints — its ratio of carbon dioxide to water, its mix of different kinds of hydrogen atoms, the kind of dust grains it contains — will indicate where it formed 4.56 billion years ago, and thus put the wandering - Jupiter theory to the test.

The form of hydrogen atoms preserved in molecules left behind by these organisms in the sediments tracks the rainfall intensity.

After fixing the molecular engine to the car's chassis and shining a light on it, Tour's team confirmed that the engine was running by using nuclear magnetic resonance to monitor the position of the hydrogen atoms within it.

Given that higher alkanes have weaker C — H bonds, this is a lower limit, and it may be that abstraction of a hydrogen atom from larger hydrocarbons can also contribute to MSA in air.

Central to the study is the idea that rocks that appear dry to the human eye can actually contain water — in the form of hydrogen atoms trapped inside natural voids and crystal defects.

One of the pictures accompanying the Daily Mail article showed the hexagonal shapes of five carbon rings as well as the positions of the hydrogen atoms around these rings.

«We take a molecule of the natural gas constituent methane (CH4) and replace one of its hydrogen atoms with a bromine atom to form methyl bromide (CH3Br),» explains Pérez - Ramírez.

Fusion, the nuclear reaction that powers the sun, involves fusing pairs of hydrogen atoms together to form helium, accompanied by enormous releases of energy.

Their reaction is created by colliding two plasma balls made of hydrogen atom cores at one million miles per hour.

Entities manifesting vitality and consciousness are examples of societies of occasions that do not conform as rigidly to their past as do the occasions of a hydrogen atom or the Rocky Mountains.

The question I now put and leave as a question for the moment is this: is anything else going on in the self - organization of snow flakes and the self - organization of hydrogen atoms that led to the universe and us?

Processing towards life is my metaphor for cosmic evolution from a relatively undifferentiated universe right after the big bang, for example a universe consisting of hydrogen atoms only.

Scientists can classify water samples, and compare their histories, by learning how many of those hydrogen atoms are deuterium.

This technique exploits the fact that the clouds in question, the progenitors of stars, are composed primarily of hydrogen atoms.

Clumpiness begot more clumpiness, as gravity pulled more matter into these dense regions, and clouds of gas, composed mostly of hydrogen atoms, began to assemble.