第1题 The two elements water is made are oxygen and hydrogen.A、that B、which C、of which D、with which 第2题 The crime was discovered till 48 hours later,gave the criminal plenty of time to get away.A、which B、that C、so D、what 第3题 The International Studies University,in 1951...
There a lot of organic compounds present in nature due to the versatility of carbon to form bonds with itself and with other elements. It can form bonds with hydrogen, oxygen, nitrogen, sulfur, etc.Answer and Explanation: Alkyl halides are organic compounds composed of an alkyl ...
What three elements can hydrogen bond with to create the IMF of hydrogen bonding between molecules? Dipole-Dipole Interactions: Adipole-dipole interactionis a type of intermolecular forces of attraction that exists in polar molecules. This is based on electrostatic in...
3.Help develop a cure for breast cancer 3.帮助开发乳腺癌的治疗方法。 4.Analyse the elements hydrogen and radium 4.分析氢和镭元素 5.Design a new range of wrist accessories 5.设计一系列新的手腕配件 6.Design clothes fo...
Iron is one of the commonest elements found within the Earth. You probably know the element oxygen. It is the element that we b___in all the time. And elements can combine (结合) to make new things l___H2O. This is hydrogen and oxygen put together, also known as w___! Learning ...
Why is hydrogen important as a future clean energy source? A fuel is a chemical that can be ‘burnt’ to provide useful energy. Burning normally means that chemical bonds between the elements in the fuel are broken and the elements chemically combine with oxygen (often from the air). ...
A substance which cannot be decomposed into different kinds of matter by any means at present employed; as, the elements of water are oxygen and hydrogen. Element One of the ultimate parts which are variously combined in anything; as, letters are the elements of written language; hence, also...
1. How can energy be extracted from hydrogen? A large amount of hydrogen is available in nature. Hydrogen is not available freely but in combination with other elements. Different processes have to be used to separate hydrogen from different elements and can be used to generate energy for produ...
The goal of electrolysis is to split up water into its two elements, hydrogen and oxygen. Rather than use platinum, the team used a catalyst of cobalt phosphide nanoparticles placed on carbon to form a fine black powder. The cobalt phosphide catalyst, which encouraged the chemicals to interact...
The basic structure of silicone is made up of polyorganosiloxanes, where silicon atoms are linked to oxygen to create the «siloxane» bond.