lies with electronic configurations. Hydrogen atoms have one electron each. They combine into molecules of two so that they can share two electrons (one each). This is because the inner-most electron shell is at a lower energy state (and therefore more stable) when occupied...
The elements hydrogen and oxygen combine to form a compound whose composition is expressed by the formula H2O. The molecule of water has the structure shown here. Chemical substances that cannot be broken down into simpler ones are known as elements. The actual physical particles of which elemen...
What does wood combine with when it burns? A. Nitrogen and oxygen. B. Hydrogen and oxygen. C. Carbon dioxide and water vapor. D. Oxygen to produce carbon dioxide, water vapor, and heat. 相关知识点: 试题来源: 解析 D。解析:文章中提到木材燃烧时与氧气结合,产生二氧化碳、水蒸气和热量。A ...
A chemical change occurs when two or more substances are combined, atoms are rearranged, and a new substance is formed. For example, when you combine hydrogen and oxygen in the correct amounts, water results. Answer and Explanation: Become a Study.com member to unlock this answer!Create your...
For example, iron and oxygen combine to form rust. A chemical reaction is important for all living organisms like plant growth, fruit production, digestion, wound healing, and reproduction.Answer and Explanation: When potassium hydroxide combines with carbon dioxide, it produces potassium c...
splitwaterintohydrogenandoxygen,withnootherby-products.Historically,electrolysis requiredsomuchelectricitythatitmadelittlesensetoproducehydrogenthatway.Thesituationis changingfortworeasons.First,significantamountsofexcessrenewableelectricityhavebecome availableatgrid(输电网)scale;ratherthanstoringexcesselectricityinarraysof...
What happens in a hydrogen-oxygen fuel cell? Explain the 6 mechanisms used to catalyze reactions. Which metabolic reaction occurs when a cell uses energy? What is the function of anabolism and catabolism? What catabolic process leads to the formation of ketone bodies?
Similarly, hydrogen and oxygen, which are both gaseous elements can combine to form water, which is a liquid compound, not a gas, at room temperature. The process by which such combinations and transformations of elements into compounds take place is called achemical reaction. ...
Calcium is an alkaline earth metal and water is a compound. They react when combined. Answer and Explanation:1 Calcium hydroxide and hydrogen gas are generated when calcium reacts with water. This is a single displacement reaction. The equation is: ...
A hydrogen fuel cell bus has three main components: the fuel cell stack, the electric motor, and the hydrogen storage tanks. The fuel cell stack is made up of individual fuel cells that combine hydrogen and oxygen to produce electricity, heat, and water as byproducts. The electric motor is...