The density of Iron (Fe) is 7.9g/cm3, Copper (Cu) is 9.0g/cm3, Silver (Ag) is 10.5g/cm3, and Zinc (Zn) is 7.1g/cm3. Your friend wants to sell you a chain and swears that it's silver. You pour 50 mL of water into a graduated cylinder and add the chain. The new reading is 70mL. You then dry and mass the chain, and find that it's 142g, a. What is the density of the chain?
b. Is the chain made of silver?
c. What other physical properties could help you determine if the chain was silver?

Use the formulas below to calculate the density of substances and ... Your friend wants to sell you a chain and swears that it's silver.

Explanation:

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.