Group IV.: C, Si, Ge, Zr, Th, tetravalent; Ti, tetravalent and hexavalent; Sn, Pb, divalent and tetravalent; Ce, trivalent and tetravalent.
C, Si, Ti, Zr, Th, Sn; Fe, Ti.
Zr .?; ?.
Ry[(h - y) 2 ]/h (8) 4' =4G'- zR[(ahy)2+x2] - ZRRh 3 +3h 2 y+h)x 2 -y 2) -3 x2y + y3 ]/ h (9) and over the base y =o, dx/dv= -dx/dy = +Z R(111 2 - 3x 2)/h4 = - 1 R (s h2 -1-x 2).
ZIRCONIUM [[[symbol]] Zr, atomic weight 90 6 (0= 16)], a metallic chemical element.
Zirconium hydroxide, Zr(OH) 4, as thus obtained, is quite appreciably soluble in water and easily in mineral acids, with formation of zirconium salts, e.g.
The anhydrous oxide is with difficulty soluble even in hydrofluoric acid; but a mixture of two parts of concentrated sulphuric acid and one of water dissolves it on continued heating as the sulphate, Zr(S04)2.
When heated in a loosely covered crucible with magnesium the nitride Zr 2 N 3 is formed (Wedekind, Zeit.
The sulphate, Zr(S04)2, is a white mass obtained by dissolving the oxide or hydroxide in sulphuric acid, evaporating and heating the mass to nearly a red heat.
4, 5, 6); and, with one exception, have rooted cheek-teeth, the premolar-formula being zr 1 The infra-orbital foramen is also narrower, and the tympanic bulla is cellular.
If P, be the force at (Xr, Yr, Zr), acting,in the direction (1, m, n), the formulae (6) and (~) reduce to X = Z(P).
The hair-splitting distinction of the Byzantine doctors between veneration due to images (zr poo and the adoration (irpo s,do' vns XarpEvrtK)) due to God alone, was dropped, and the utility of pictures for the illiterate emphasized.
litre can also opt for five doors, a 2.0 liter turbo diesel engine and Stepspeed transmission on ZR 120 models.
This provides a much more sporting character and in some ways is surprising that it has not also percolated into at least the ZR.
Inside a cylinder ?1 = - I iR (' x + yi) 2a2 /(a2 +b 2 '), (Io) 92+1 i 2 i = I ZR (x + yi) 2b2 I (a2 +b 2), (21) and for the interspace, the ellipse being fixed, and a l revolving with angular velocity R (1 +11/11= - giRc 2 sh 2 (n-a+ i)(ch 2a+I)/sh 2 (a i -a), (12) 42+1,'21 = *iRc 2 sh 2(na+Ei)(ch 2a-1)/sh 2(a i - a), (13) satisfying the condition that 4/ 1 and ' // 2 are zero over n = a, and over n =a 1 constant values.
Chem., 1904, 42, p. 87) regards it as a dibasic acid, ZrOS04 S04H2, and that the crystalline sulphate is ZrOS04 S04H2.3H20 (not Zr(S04)2.4H20).
Users comment that what ZR offers in return is more than a compensation, but it's good to know if you are golfing in a very warm and wet environment.
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