What is an express term? Express terms are the terms of the agreement which are expressly agreed between the parties. Ideally, they will be written down in a contract between the parties but where the contract is agreed verbally, they will be the terms discussed and agreed between the parties. What is a vitiating factor? […]

What happens when you burn magnesium in the presence of oxygen? When magnesium reacts with oxygen, it produces light bright enough to blind you temporarily. Magnesium burns so bright because the reaction releases a lot of heat. As a result of this exothermic reaction, magnesium gives two electrons to oxygen, forming powdery magnesium oxide (MgO). […]

What is cooled lava called? When lava comes out of a volcano and solidifies into extrusive igneous rock, also called volcanic, the rock cools very quickly. Crystals inside solid volcanic rocks are small because they do not have much time to form until the rock cools all the way, which stops the crystal growth. What […]

How does the periodic table help us understand elements? The table can be used to predict the properties of elements, even those that have not yet been discovered. Columns (groups) and rows (periods) indicate elements that share similar characteristics. The table makes trends in element properties apparent and easy to understand. What do we know […]

What is the best reply for SUP? “What’s up?” or here (West Midlands of England) commonly just “sup” is a general greeting, you can response with answers like “Not much”, “Nothing”, “Alright” etc. In this context, the response is just a return of the greeting, or a confirmation that all is going normally. How do […]

What is the maximum percentage of propane in air that would still support combustion? Any percentage of propane in a propane/air mixture between 2.15% and 9.6% will be sufficient for propane to burn. However, an improper air/gas mixture can produce Carbon Monoxide (CO) that is a deadly product of incomplete combustion. Is LPG being phased […]

Why is peer review important? Peer review has become the foundation of the scholarly publication system because it effectively subjects an author’s work to the scrutiny of other experts in the field. Thus, it encourages authors to strive to produce high quality research that will advance the field. What is the purpose of peer review […]

At what pressure does CO2 turn to dry ice? At pressures below 5.13 atm and temperatures below −56.4 °C (216.8 K; −69.5 °F) (the triple point), CO2 changes from a solid to a gas with no intervening liquid form, through a process called sublimation. The opposite process is called deposition, where CO2 changes from the […]

Is h2so4 a Polyprotic acid? Several important acids can be classified as polyprotic acids, which can lose more than one H+ ion when they act as Bronsted acids. Diprotic acids, such as sulfuric acid (H2SO4), carbonic acid (H2CO3), hydrogen sulfide (H2S), chromic acid (H2CrO4), and oxalic acid (H2C2O4) have two acidic hydrogen atoms. What is […]

What happens to pressure as you move towards the center of the Earth? How does pressure change as you go from the surface to the center of the Earth? Pressure increases. The layer of hot, solid material between Earth’s crust and core. What happens to pressure and density as you move toward the interior of […]