In a chemical formula, subscripts indicate the elements' ratio. Changing the subscripts would change the identity of the chemical. For example CO2 = carbon DIoxide, but CO = carbon MONoxide.
Density = mass / volume
= 69g / 23 ml
= 3 g / ml.
Thus, the density of the sample is 3 grams per ml or 3g/ ml
The higher the temperature, the faster the molecules or particles will move. This is because the increased temperature will increase the amount of energy inside the molecules or particles, which means they are able to move more quickly with their increased amount of energy.
To find out the answer, we must know the mass percentage of Cu in the mineral chalcopyrite.
Mass percentage of Cu = molar mass of Cu/molar mass of chalcopyrite = 64/(64+56+32*2) = 34.8%.
So to obtain 210 g pure Cu, the amount of mineral need = mass of Cu/mass percentage of Cu = 210 g/34.8% = 603 g = 0.603 kg.
Answer:
When these materials end up in the ocean, they support the growth and well-being of marine life.
Explanation:
This is the incorrect statement
