
NiCl2·2H2O + 2 PPh3 + 2
HC(OC2H5)3 →
[NiCl2(PPh3)2] + 2
HC(O)OC2H5 + 4
C2H5OH
and
NiCl2·2H2O + dppe + 2
HC(OC2H5)3 →
[NiCl2(dppe)] + 2 HC(O)OC2H5 + 4
C2H5OH
where Ph = C6H5 and dppe =
Ph2PCH2CH2PPh2.
MW
of [NiCl2(PPh3)2]=
654.2 g/mol
MW of NiCl2·2H2O= 165.6 g/mol
MW of PPh3= 262.3 g/mol
Mw of Triethyl orthoformate
HC(OC2H5)3 = 148.2 g/mol
density of triethyl orthoformate
HC(OC2H5)3 = 0.891 g/ mL
If 0.186 g of NiCl2:2H20 reacts with 0.577 g of PPhz...
For the equilibrium 2PH3(g) ⇌ P2(g) +3H2(g), the equilibrium partial pressures are PPH3=0.049 atm, PP2=0.498 atm, and PH2=0.776 atm at 738K. Calculate Kp.
Which reagents could be combined to make the following molecule? so pph3 o e @ $ $ - 9
QUESTION 19 For the equilibrium 2PH3(g) ⇌ P2(g) +3H2(g), the equilibrium partial pressures are PPH3=0.029 atm, PP2=0.699 atm, and PH2=0.557 atm at 738K. Calculate Kp. *Please report 3 significant figures. Numbers only, No unit. No scientific notation.
(8) Let E C R" and G C R" be open. Suppose that f E G and g G R', so that h = go f : E → R. Prove that if f is differentiable at a point x E E, and if g is differentiable at f (x) E G, then the partial derivatives Dihj(x) exist, for all and j - ...., and 7m に! (The subscripts hi. g. fk denote the coordinates of the functions h, g....
Need only part e,f and g. Need only part e,f and g. Need only
part e,f and g. Need only part e,f and g. Need only part e,f and g.
Need only part e,f and g. Need only part e,f and g. Need only part
e,f and g. Need only part e,f and g. Need only part e,f and g. Need
only part e,f and g. Need only part e,f and g. Need only part e,f
and g. Need only...
E, F, and G in a sample space S. Assume that Pr[E]=0.5, Pr[F]=0.45, Pr[G]=0.55, Pr[E∩F]=0.3, Pr[E∩G]=0.3,and Pr[F∩G]=0.25. Find the following probabilities Pr[E∪F] = Pr[F′∩G]= Pr[E′∩G′]=
Consider the overall balanced chemical equation:
Ni(NO3)2·6H2O + 2 NaY + 2
PPh3 + 6
HC(OC2H5)3 →
[NiY2(PPh3)2] + 2 NaNO3
+ 12 C2H5OH + 6
HC(O)OC2H5
where Ph = C6H5 and Y = SCN or NCS
(ambidentate ion).
MW of Ni(NO3)2·6H2O = 290.8
g/mol
MW of NaSCN= 81.07 g/mol
MW of PPh3= 262.3 g/mol
MW of [NiY2(PPh3)2] (Y = SCN or
NCS) = 699.5 g/mol
If 0.252 g of Ni(NO3)2 6H20 reacts with 1.77 mmol of NaSCN and 1.65 mmol...
Let f, g E H(C) be such that |f(z)| < \g(z)| for any z e C. Show that there exists a E D(0,1) such that f(z) = ag(z) for any z E C. (Hint: consider f/g and be careful with the zeros of g.)
Given f, g E Da,b] , prove that min(f, g) E Da,시