Which of the following is an example of oxidation? Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Iron and steel rust when they come into contact with water and oxygen – both are needed for rusting to occur. What are three […]
What is Schottky defect with diagram?
What is Schottky defect with diagram? A Schottky defect is an excitation of the site occupations in a crystal lattice leading to point defects named after Walter H. In ionic crystals, this defect forms when oppositely charged ions leave their lattice sites and become incorporated for instance at the surface, creating oppositely charged vacancies. Why […]
What happens in the upper mantle?
What happens in the upper mantle? The upper mantle begins just beneath the crust and ends at the top of the lower mantle. The upper mantle causes the tectonic plates to move. Crust and mantle are distinguished by composition while the lithosphere and asthenosphere are defined by a change in mechanical properties. Why is the […]
How do you start writing a hypothesis?
How do you start writing a hypothesis? Developing a hypothesis Ask a question. Writing a hypothesis begins with a research question that you want to answer. Do some preliminary research. Formulate your hypothesis. Refine your hypothesis. Phrase your hypothesis in three ways. Write a null hypothesis. What is a good sentence for hypothesis? Their hypothesis […]
Is aluminum hard to machine?
Is aluminum hard to machine? Fortunately, compared with other construction materials, aluminum is relatively easy to machine. It responds well to most fabrication methods, including milling, drilling, cutting, punching and bending. What is the lowest grade of aluminum? Grade 1050 aluminium Is aluminum toxic to the human body? Oral exposure to aluminum is usually not […]
Do you pinch skin for IM injection?
Do you pinch skin for IM injection? Insert needle at an 45o angle to the skin. Pinch up on SQ tissue to prevent injecting into muscle. Aspiration before injection is not required. What size needle is used for a subcutaneous injection? 5/8″ needle What are the 3 types of injections? The three main types of […]
What methods are used in primary treatment of wastewater?
What methods are used in primary treatment of wastewater? There are three basic biological treatment methods: the trickling filter, the activated sludge process, and the oxidation pond. A fourth, less common method is the rotating biological contacter. What is the main goal of primary treatment in a modern sewage treatment plant? The objective of primary […]
How many acres is good for a house?
How many acres is good for a house? “Typically, custom homeowners are looking for at least one-half acre or larger for their lot. The trend among custom home buyers is for larger (greater than one acre) lots. How big of a tractor do you need for 10 acres? Subcompact tractors typically have between 25 and […]
Does equilibrium constant depend on pressure?
Does equilibrium constant depend on pressure? Equilibrium constants are not changed if you change the pressure of the system. The only thing that changes an equilibrium constant is a change of temperature. If there are the same number of molecules on each side of the equation, then a change of pressure makes no difference to […]
Which system of Signalling is used on a single line?
Which system of Signalling is used on a single line? Electric token To provide for this, the electric train token system was developed. Each single-line section is provided with a pair of token instruments, one at the signal box at each end. What is single line and double line? A double-track railway usually involves running […]