Assigned as Homework ? HQ18.26 A voltmeter attached to the voltaic cell constructed in the
previous question registers a positive voltage of 1.677 ± 0.020 V. Enter the correct chemical
symbol of the unknown metal in this voltaic cell. (Use Table 18.3 for your standard cell
potentials Reduction Reaction Potential (e) Volts 3.053 2.866 1.692 1.645 1.498 1.358 1.229
1.156 0.957 0.800 0.342 0.247 AgAg
Solution
A voltaic cell constructed
gave a voltage = 1.677 V
SHE electrode has potential of 0
So,
the correct chemical symbol of the unknow metal = Au.
C++ ProgrammingWhat are the differences in the function calls betw.pdf
1. C++ Programming
What are the differences in the function calls between the four member functions of the Shape
class below?
void Shape::member(Shape s1, Shape s2);
void Shape::member(Shape *s1, Shape *s2);
void Shape::member(Shape& s1, Shape& s2) const;
void Shape::member(const Shape& s1, const Shape& s2);
void Shape::member(const Shape& s1, const Shape& s2) const;
Solution
1)void Shape :: member ( Shape s1, Shape s2 ) ; // pass by value, argument type is pass by
value. you can pass values to function. 2)void Shape :: member ( Shape *s1, Shape *s2 ) ; // pass
by pointer, you can pass pointer as a argument. 3)void Shape :: member ( Shape& s1, Shape& s2
) const ; // pass by reference, you can pass the refrence or address of data. 4)void Shape ::
member ( const Shape& s1, const Shape& s2 ) ; // pass by const reference 5)void Shape ::
member ( const Shape& s1, const Shape& s2 ) const ; // plus the function is const