Wax will be dissolved by nonpolar solvents: (a) hexane, (b) benzene and (d) carbon tetrachloride
Wax will not be dissolved by polar solvent such as (c) acetone and (e) water
0.53313648 feet = 16.25cm
Answer:
Different types of macro organisms live in different qualities of water. This is because some are more resistant to pollution than others. For example, leeches and aquatic worms thrive in polluted water. Others are very sensetive to it, such as Mayflies, Caddisflies and Stoneflies.
To prevent water pollutions, you can be careful about what goes down your drains. All water from your drain has to re-enter the ecosystem at some point. Pouring oil, fat or grease down the sink is a very bad thing for the environment.
Water is important because we need a healthy water supply to keep our communities healthy. If our water supply such as a river or lake is contaminated with pollutants, it will become undrinkable.
Answer:
15.75g
Explanation:
Rearrange the formula: density = mass/volume, so that mass is the subject: mass = density × volume
Now substitute (plug in) the known values into the formula:
mass = 10.5 × 1.5 ⇒ mass = 15.75g
The mass of the silver necklace is 15.75g
Hope this helps!
