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Very small stains or smears, usually unidentifiable but nowadays, any CSI can whip up a computerized printout listing the material(s) that made the trace, smear or stain.
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∙ 15y ago
Trace quantities refer to very small amounts or concentrations of a substance present in a sample or system. These amounts are typically at levels that are difficult to detect or measure accurately using standard methods. The term is often used in chemistry and environmental studies to describe the presence of impurities or contaminants.
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What are base quantities and derived quantities?
Base quantities are the quantities on the basis of which other quantities are expressed. The quantities that are expressed in terms of base quantaties are called derived quantities.
What are derived quantities?
All other quantities which described in terms of base quantities are called base quantities.
Types of physical quantities?
Physical quantities can be broadly categorized as scalar or vector quantities. Scalar quantities have only magnitude, like mass or temperature, while vector quantities have both magnitude and direction, like velocity or force. Other types of physical quantities include derived quantities (obtained from combinations of base quantities) and dimensionless quantities (without units).
How are the fundamental and derived quantities related?
Fundamental quantities are independent of other physical quantities, while derived quantities are based on combinations of fundamental quantities using mathematical operations. Derived quantities cannot exist without fundamental quantities as they rely on them for their definition and calculation.
How many types of quantities?
there are three types of quantities:-1.Scalar quantities - Scalarsare quantities that are fully described by a magnitude (or numerical value) alone.2.vector quantities - Vectorsare quantities that are fully described by both a magnitude and a direction.3.Tensor quantities - tensors are quantities that are fully described by magnitude, direction and the plane thecomponent acts on.
What is the difference between a macro-mineral and a trace element?
Macro-minerals are essential minerals that the body needs in relatively large amounts, such as calcium, magnesium, and potassium. Trace elements, on the other hand, are essential minerals that the body needs in much smaller amounts, such as iron, zinc, and selenium. Both macro-minerals and trace elements are important for various bodily functions and overall health.
An element that is essential for the survival of an organism but only in minute quantities?
trace elements
Trace elements are those required by an organism in only minute quantities Which of the following is a trace element that is required by humans and other vertebrates?
iodine
Microorganisms require large quantities of this nutrient for use in cell structure and metabolism?
Trace Element By, Microprocessor Christofer Garcia
What element is a trace element?
A trace element is an element that is present in very small amounts in the environment or within living organisms. Examples of trace elements include zinc, copper, and selenium. While they are required in minute quantities, they play important roles in various biological processes.
Humans are exposed to trace quantities of toxic chemicals in food (Points: 1)?
YES, it is frequently possible.
Explain Trace metals Heavy metals Give examples?
Poisoning and disease can occur due to human exposure to trace quantities of heavy metals. Common trace metals include mercury (Hg), arsenic (Ar) and lead (Pb).
Is ozone located anywhere else besides the ozone layer?
Yes, ozone is found in trace quantities in earth's atmosphere. it is a greenhouse gas.
What is the most scarce metal?
Francium of the naturally occurring ones along with Promethium and Technetium which have only recently been found in trace quantities in nature
What are the 2 main groups of minerals in food?
The minerals found in food can be categorized into two groups; macrominerals, and trace minerals. Macrominerals are usually found in large quantities in food, and are required in larger quantities for the body. Trace minerals are found in small amounts in food, and are needed in smaller amounts in the diet. Macrominerals: Sodium, potassium, chloride, calcium, phosphorus, magnesium, sulfur. Trace minerals: Iron, zinc, iodide, selenium, copper, fluoride, chromium, molybdenum, manganese.
What are examples of food rich in minerals?
Some examples of foods rich in minerals include leafy green vegetables (such as spinach and kale) for iron and calcium, nuts and seeds (such as almonds and chia seeds) for magnesium and zinc, and seafood (such as salmon and shrimp) for iodine and selenium.
What molecules are in mild steel?
A combination of two elements, iron and carbon, where other elements are present in quantities too small to affect the properties, such as trace amounts of sulphur.
