Why do both volcanoes and earthquakes occur in Japan? The volcanoes belong to the Pacific Ring of Fire, caused by subduction zones of the Pacific plate beneath continental and other oceanic plates along its margins. Besides intense volcanic activity, Japan is one of the places in the world most affected by frequent, and sometimes devastatingly […]
How do pressure belts affect climate?
How do pressure belts affect climate? When the air sinks it creates an area of high pressure. Winds blow from areas of high to low pressure, which transfers the air from where it is sinking to where it is rising. This continual transfer of wind maintains the pressure belts of high and low pressure which […]
How do you know if a gas is ideal?
How do you know if a gas is ideal? For a gas to be “ideal” there are four governing assumptions: The gas particles have negligible volume. The gas particles are equally sized and do not have intermolecular forces (attraction or repulsion) with other gas particles. The gas particles move randomly in agreement with Newton’s Laws […]
Why is alkaline hydrolysis preferred?
Why is alkaline hydrolysis preferred? Hydrolysis using dilute alkali There are two big advantages of doing this rather than using a dilute acid. The reactions are one-way rather than reversible, and the products are easier to separate. Why is hydrolysis reversible? Hydrolysis is a reversible reaction, meaning that the alcohol and acid groups can react […]
What is sodium-22 used for?
What is sodium-22 used for? use of sodium Of the radioactive artificial isotopes, sodium-22 (2.6-year half-life, the longest half-life of a sodium isotope) is used as a radioactive tracer for natural sodium. Sodium-24 (15-hour half-life) is limited in use by its short life and is produced by irradiation in a nuclear reactor. Is sodium-22 stable? […]
How do you increase the mechanical advantage of a screw?
How do you increase the mechanical advantage of a screw? Screws move objects to a greater depth (or higher elevation) by increasing the force applied to the screw. The mechanical advantage of a screw is always greater than 1 because the output force applied by the screw is greater than the input force applied to […]
When was the last magnetic reversal?
When was the last magnetic reversal? The reversal was dated to approximately 15 million years ago. In August 2018, researchers reported a reversal lasting only 200 years. But a 2019 paper estimated that the most recent reversal, 780,000 years ago, lasted 22,000 years. How long does it take for Earth magnetic field to reverse? about […]
Can a room be cooled indefinitely by leaving the door of the refrigerator open?
Can a room be cooled indefinitely by leaving the door of the refrigerator open? No, the room can’t be cooled by leaving the door of an electric refrigerator open. In fact the temperature of the room rises because the refrigerator extracts heat from the freezing chambers and rejects it to the surrounding air in the […]
What does a concave lens look like?
What are the 3 kinds of solubility?
What are the 3 kinds of solubility? Based on the concentration of solute dissolves in a solvent, solutes are categorized into highly soluble, sparingly soluble or insoluble. Does base increase solubility? The anion in sparingly soluble salts is often the conjugate base of a weak acid that may become protonated in solution, so the solubility […]