Density is Mass divided by volume.
Answer: 7.81 mol HgO (How many moles of mercury(II) oxide, HgO, are needed to produce 125 g of oxygen, O2?)
Explanation:
Answer:
1.) At high altitude it takes longer to cook spaghetti.
Explanation:
The first even describes depression in boiling point due to reduction in external pressure . It is not a colligative property.
Depression of freezing point and elevation of boiling point due to impurity or addition of solute are colligative priperty.
Answer: Option (d) is the correct answer.
Explanation:
It is known that polyethene which have high density and these are generally safe plastics which does not transfer any chemicals to food ingredients. In most of the industries, these type of plastics have large application because these can be used to prepare plant pots, plastic woods, furniture etc.
High density polyethene is also known by the short form HDPE.
Whereas low density polyethene (LDPE), PVC, polystyrene and polypropylene are not safe plastics and they tend to harm the environment. So, they are not safe to store or preserve food items.
Thus, we can conclude that out of the given options HDPE polymers is used in plastic bottles and plastic containers.
