Mega prefix

Prefixes used for powers of 10 are 10 mega M 10 milli m micro jj. 

Prefix deca- kilo- mega- giga- tera- ... 

The value of R changes if we express the ideal-gas equation (Equation (1.13)) with different units. Table 2.3 gives values of R in various other units. We must note an important philosophical truth here the value of the gas constant is truly constant, but the actual numerical value we cite will depend on the units with which we express it. We met a similar argument before on p. 19, when we saw how a standard prefix (such as deca, milli or mega) will change the appearance of a number, so V = 1 dm3 = 103 cm3. In reality, the number remains unaltered. 

One of the ways we will learn to express quantities in Chapter 1 is by using prefixes such as mega for million (I06), micro for one-millionth (10-6). and atto for 10-18. The illustration shows a signal due to light absorption by just 60 atoms of rubidium in the cross-sectional area of a laser beam. There are 6.02 X 1023 atoms in a mole, so 60 atoms amount to 1.0 X 10-22 moles. With prefixes from Table 1-3, we will express this number as 100 yoctomoles (ymol) or 0.1 zeptomole (zmol). The prefix yocto stands for I0-24 and zepto stands for 10-21. As chemists learn to measure fewer and fewer atoms or molecules, these strange-sounding prefixes become more and more common in the chemical literature. 

Prefixes can be used with all of the primary and secondary units to change their values by powers of ten (Table 1.2). Note the abbreviations for the units. Capitalization is important meters and moles per liter (molar), or mill- and mega-, differ only by capitalization. There are prefixes for some of the intermediate values (for example, centi- is 10-2) but the common convention is to prefer these prefixes, and write 10 mm or.01 m instead of 1 cm. 

The use of the prefix symbol M is a cause of much confusion in the natural gas business. In standard SI Units, M means mega and... 

How does adding the prefix mega- to a unit affect the quantity being described ... 

Prefix peta- tera- giga- mega- milli- micro- nano- pico- femto- atto- ... 

Size, in computer terms, uses idiosyncratic units in addition to the bit and byte. Outside the world of computing, the prefixes kilo, mega, giga, and tera ordinarily refer to 10, 10, 10, and 10, respectively. However, when used with byte, they refer instead to 2, 2 , 2, and 2 . That is, a kilobyte is not 1000 bytes but 1024 bytes. The reason is that addresses, the numbers that refer to the location of digital data, are binary numbers, so a kilobyte is the total number of bytes that can be addressed by a ten bit address, and it carries the kho prefix because it is the power of 2 closest to 1000. Likewise a megabyte is 1,048,576 bytes because it is the power of 2 closest to 1,000,000, and represents the number of locations addressable by 20 bits. 

Prefix deca hecto kilo mega giga tera... 

State the numbers or fractions represented by the following metric prefixes, and write their abbreviations giga, mega, kilo, centi, milli, micro, nano, and pico. (For example, kilo is 10 and is represented by k.)... 

Write the numbers represented by the following prefixes (a) mega-, (b) kilo-, (c) deci-, (d) centi-, (e) milli-, (f) micro-, (g) nano-, (h) pico-. 

L Avogadro constant inductance Lagrange function angular momentum M molar (as in 0.1 M solution) mega (SI prefix for 10 ) methionine ... 

Place the following metric prefixes in order from the smallest value to the largest value deci, kilo, centi, micro, mega, milli, giga, nano. 

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