Sci 3 (2)

Question 1

How much gold was used in the construction of Columbia?

Answer 1

41 kilgrams

Question 2

What six metals are often used in plating?

Answer 2

platinum, palladium, nickel, copper, silver, rhodium

Question 3

What are many formerly plated parts now made from?

Answer 3

stainless steel

Question 4

Why was silver not ideal for cutlery?

Answer 4

required frequent cleaning

Question 5

What metal is often used on surgical instruments?

Answer 5

platinum

Question 6

What are palladium finishes often mistaken for?

Answer 6

white gold

Question 7

Who determined that it took one mole of electrons to convert one mole of silver ion to silver metal?

Answer 7

Michael Farday

Question 8

How many coulombs of charge does the Faraday have?

Answer 8

96,500

Question 9

Who developed an equation to make predictions about oxidation-reduction reactions?

Answer 9

Walther Nernst

Question 10

What does the Nernst equation do?

Answer 10

connects cell potentials to free energy changes

Question 11

What is E in the Nernst equation?

Answer 11

cell potential in volts

Question 12

What is T in the nernst equation?

Answer 12

temperature in Kelvin

Question 13

What is R in the Nernst equation?

Answer 13

universal gas constant

Question 14

What is Q in the Nernst equation?

Answer 14

ratio of product concentrations to reaction concentrations

Question 15

What does the Nernst equation calculate?

Answer 15

cell voltage

Question 16

What information is needed to calculate cell voltage using the Nernst equation?

Answer 16

Concentrations of Solutions

Question 17

What does stoichiometry use do?

Answer 17

use balanced equation to keep track of chemical substances

Question 18

What is the heat that is added or lost when a substance changes its state?

Answer 18

latent heat