A substance that has a solubility of 12 grams/L of water would require 36/12 = 3 liters of water to dissolve 36 grams of the substance.
It involved knots in strings called quipu. The quipu was not a calculator, rather it was a storage device. Remember that the Incas had no written records and so the quipu played a major role in the administration of the Inca empire since it allowed numerical information to be kept.
The density formula is:
density=mass/volume.
d=3.5g/2cm^3
d=1.75 g/cm^3
The density of the sample is 1.75 g/cm^3.
Answer:
1.38g/cm 3
Copper-More Dense than 1.38g/cm 3
Isotopes.
ISO means equal
Topo means position
Are substances that occupy the same position in the periodic table becomes they have the same number of protons but they differ on the number of neutrons and in consequence they have different mass