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15 is: The eighth composite number and the sixth semiprime and the first odd and fourth discrete semiprime; [1] its proper divisors are 1, 3, and 5, so the first of the form (3.q), [2] where q is a higher prime. a deficient number, a lucky number, a bell number (i.e., the number of partitions for a set of size 4), [3] a pentatope number, [4 ...
Infant formula An infant being fed from a baby bottle. Infant formula, also called baby formula, simply formula (American English), baby milk or infant milk (British English), is designed and marketed for feeding to babies and infants under 12 months of age, usually prepared for bottle-feeding or cup-feeding from powder (mixed with water) or liquid (with or without additional water).
The melting point of α-crystalline regions is given as 185 [14] [15] to 220 °C, [14] [16] the density as 0.936 to 0.946 g·cm −3. [ 17 ] [ 18 ] The β-modification is in comparison somewhat less ordered, as a result of which it forms faster [ 19 ] [ 20 ] and has a lower melting point of 170 to 200 °C.
Silicon is a chemical element; it has symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, lead, and flerovium are below it. It is relatively unreactive.