What is this in standard form? Standard form is a way of writing down very large or very small numbers easily. 103 = 1000, so 4 × 103 = 4000 . So 4000 can be written as 4 × 10³ . The rules when writing a number in standard form is that first you write […]

What is an isotope of carbon? Isotopes of Carbon By far the most common isotope of carbon is carbon-12 (12C), which contains six neutrons in addition to its six protons. The next heaviest carbon isotope, carbon-13 (13C), has seven neutrons. Both 12C and 13C are called stable isotopes since they do not decay into other […]

What does reactive oxygen species ROS mean and what type of biological molecules are damaged by it? Listen to pronunciation. (ree-AK-tive OK-sih-jen SPEE-sees) A type of unstable molecule that contains oxygen and that easily reacts with other molecules in a cell. A build up of reactive oxygen species in cells may cause damage to DNA, […]

How do u pronounce pho? While most people would say poe or foe, it’s actually pronounced more like fuh. However, if you head to a restaurant and mispronounce it, the waiters will figure out what you’re saying because the mispronunciation is so common. There are many types of pho. How do you say gamma in […]

Which is required for karst topography to form? The development of all karst landforms requires the presence of rock which is capable of being dissolved by surface water or ground water. Although commonly associated with carbonate rocks (limestone and dolomite) other highly soluble rocks such as evaporites (gypsum and rock salt) can be sculpted into […]

How can you identify a saturated fatty acid? Saturated and unsaturated fatty acids If there are only single bonds between neighboring carbons in the hydrocarbon chain, a fatty acid is said to be saturated. When the hydrocarbon chain has a double bond, the fatty acid is said to be unsaturated, as it now has fewer […]

Is potassium alum a mixture? Potassium alum, potash alum, or potassium aluminium sulfate is a chemical compound: the double sulfate of potassium and aluminium, with chemical formula KAl(SO4)2. The compound is the most important member of the generic class of compounds called alums, and is often called simply alum. Can you overdo Kegels? Doing too […]