Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 7.05 g and has a volume of 0.504 cm. Gold has a density of 19.3 g/cm and copper has a density of 8.96 g/cm. Calculate the percentage by mass of each metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains. gold: copper: Pure gold is defined as having 24 carats. When mixed in an alloy, the carats of gold are given as a percentage of this value. For example, a piece of jewelry made with 50% gold has 12 carats. State the purity of this piece of red gold jewelry in carats. purity: carats

The density of a cooking oil is 0.92g/cm^3 calculate the mass in grams g for an oil droplet has a volume of 5.34 x 10^-4 cm^3

At one point in time, the price of gold was about $1400 per ounce, while that of silver was about $20 an ounce. The "ounce" in this case is the troy ounce, which is equal to 31.1035 gg. (The more familiar avoirdupois ounce is equal to 28.35 g.) The density of gold is 19.3 g/cm3g/cm3 and that of silver is 10.5 g/cm3. If you found a spherical gold nugget worth $3.00 million, what would be its diameter? How much would a silver nugget of that size be worth?

You can identify a metal by carefully determining its density. A 55.5 g piece of an unknown metal is 2.79 cm long, 2.41 cm wide, and 1.05 cm thick. What is the identity of the element? Zirconium, 6.51 g/cm3 Palladium, 12.0 g/cm3 Iron, 7.87 g/cm3 Lead, 11.3 g/cm3 Iridium, 22.4 g/cm3