Example sentences of "two [noun sg] " in BNC.
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| 1 | The same ship had brought two 16-pounder , two 12-pounder and two eight-pounder [ 7.3 , 5.5 and 3.6-kg ] guns , which were now to prove their value . |
| 2 | The water molecule , H 2 O , has two hydrogen atoms attached to the big oxygen atom at angles that discourage the formation of equilateral triangles . |
| 3 | For example , when one oxygen and two hydrogen atoms combine to form a molecule of water , there is a release of energy . |
| 4 | Yet chemists would guess , were it not for the evidence of their own senses , that a material containing two hydrogen atoms and one of oxygen in each of its molecules should be a gas at Earthly temperatures — like carbon dioxide , with one atom of carbon and two of oxygen , or nitrogen dioxide , with two atoms of oxygen and one of nitrogen . |
| 5 | Green 's molecules consists of a central tungsten atom to which are attached two five-atom carbon rings ( cyclopentane molecules ) and two hydrogen atoms . |
| 6 | When the compound is subjected to light it absorbs energy and two hydrogen atoms are lost ( elimination ) . |
| 7 | Like Green 's compound , this iridium compound contains two hydrogen atoms that can be eliminated by light . |
| 8 | This molecule has a central tungsten atom surrounded by two five atom carbon rings and two hydrogen atoms . |
| 9 | The spectrum he detected signalled the presence of a new molecular species , tight had caused the parent molecule to lose its two hydrogen atoms and rearrange so that the two carbon rings sandwiched the tungsten atom . |
| 10 | The two hydrogen atoms and the one oxygen atom which make up the water molecule form strong covalent bonds ( Figure 7 , p.102 ) . |
| 11 | So in the early 1920s some people conjectured that it may be possible that helium — element number two in the periodic table of the elements — could be built from two hydrogen atoms . |
| 12 | They set out to create the conditions where two hydrogen nuclei ( ‘ protons ’ ) could get close to each other , collide and join to make a nucleus of helium . |
| 13 | None of this was known in 1926 when Paneth and Peters attempted to join two hydrogen protons to make helium , as the discovery of the neutron only occurred in 1932 . |
| 14 | Carbon dioxide is the most soluble of the gases because as it dissolves it does n't just go through a physical solution it goes through a chemical conversion such that carbon dioxide dissolving in water forms carbonic acid which , in water will dissociate into a hydrogen iron and a hydrogen bicarbonate iron which can further dissociate this is why I 've got a nice wide blackboard and you 've only got a piece of A four paper so you end up with a carbonate iron two hydrogen ions This system is a dynamic equilibrium . |
| 15 | Sulphuric acid releases two hydrogen ions per molecule , that is 2H + + |
| 16 | If Davy and Berzelius were right that chemical combination was electrical , the union of positive and negative atoms , then a combination of two hydrogen or oxygen atoms into H 2 or O 2 was impossible , for instance ; and yet such union seemed to be required for the H 2 O hypothesis . |
| 17 | Metallic hydrogen is expected to be produced at very high pressures because the molecules of molecular hydrogen ( H 2 ) will be forced so close together that each of the two hydrogen atoms in the H 2 molecule is attracted to atoms in neighbouring molecules as much as to its partner . |
| 18 | Khumalo 's allegations were strengthened by similar claims by two gang members who said that the security forces had recruited , trained and armed them to carry out attacks on ANC supporters . |
| 19 | And the two Express newspapers are the Tories ' most loyal supporters in Fleet Street . |
| 20 | The house has two meditation rooms the gompa with an assortment of footwear at the door reminding newcomers of traditional courtesy . |
| 21 | What makes the Khmer Rouge so strong is its vision for Cambodia , which is pure , radically nationalistic and free of the corruption , petty power struggles and personal jealousies that bedevil the other two resistance factions and the Hun Sen government in Phnom Penh . |
| 22 | They are much stronger than the other two resistance groups , led by Prince Norodom Sihanouk and Mr Son Sann . |
| 23 | An elasticated compression strap prevents the contents moving around and two chest straps , attached to the shoulder straps , keep the sack firmly on your back . |
| 24 | The 68-year-old former Clerk of Works at Harrow Council in London does not smoke , drink or gamble and has suffered two heart attacks . |
| 25 | He does n't smoke or drink , and even if he wanted to , two heart attacks and a by-pass operation have made the decision for him . |
| 26 | He has had two heart attacks and two major by-pass operations . |
| 27 | His mother had suffered two heart attacks before the third one had killed her . |
| 28 | That turned out not to be so , as when South cashed the ace of diamonds at trick three down tumbled the king and jack , allowing declarer to take in total five diamond tricks , two heart tricks , and four spade tricks . |
| 29 | He was in Belfast in 1990 , but two heart attacks put him out of action for a while . |
| 30 | In recent years she 's suffered two heart attacks and been treated for cancer and she says she ca n't stand much more of the strain . |