5. what is the density of a cube with a side length of 50.0 mm and a mass of 115 grams?

Step 1: Calculate the volume of the cube from the given length

The length of the side of the cube, a = 50 mm = 5 cm (since 10 mm = 1 cm)

Volume of the cube =

Step 2: Calculate the density from the known mass and calculated volume

It is given that the mass of the cube = 115 grams

Now, density of a given substance is the amount of that substance present in a unit volume

density = mass/volume = 115 grams/125 cm3 = 0.920 g/cm3

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.