(8 marks) Consider a galvanic cell involving zinc (II) and copper (II) and the corresponding Zn and Cu electrodes (use the data in Table 12.1 from the text). Hand draw this galvanic cell include the details below. Select the tickbox when you have completed this question. a) Draw a sketch of the cell ( 2 marks) b) Clearly identify the anode and cathode ( 2 marks) c) Write the balanced overall reaction ( 2 marks) d) Which electrode will lose mass ( 1 mark)

What is the sum of the first ten terms of the sequence \( 4,-12,36,-108 \ldots \) ?

Factor the trigonometric expression and simplify. \( \cos ^{3} x-\sin ^{3} x \)

Let \( f(x)=x^{2}-5 \) and \( g(x)=19-x \). Perform the composition or operation indicated. \( (f g)(-4) \)

La cooperativa escolar especifica que cada paquete de desayuno estudiantil tenga un promedio de 75.5 gramos con una desviación estándar de 4.5 gr. A) Determina la probabilidad de que una muestra aleatoria de 50 paquetes de desayuno tengan un peso promedio menor a 70 grs c/u

X Pregunta 5 Dados los conjuntos A y B contenidos en el conjumto universal U , definidos como: \( U=(-2 ;-1 ; 0 ; 1 ; 2 ; 3 ; 4 ; 5\} \) \( A=\{3 \mathrm{x} / x \in N, x<5\} \) \( B=[x+2 / x \in N,-1