What is the approximate mass of a mouldy apple?

It is difficult to determine the exact mass of a mouldy apple as it can vary depending on several factors such as the size, type of apple, and extent of mould growth. However, as a general estimate, a small mouldy apple might weigh around 100 to 150 grams, while a larger one could weigh anywhere between 200 to 300 grams.

Mold can quickly spread and penetrate the apple's flesh, causing it to become soft and rot. As the mould consumes the apple's nutrients, the apple's weight may decrease slightly. Additionally, the presence of mould may also introduce moisture into the apple, potentially increasing its weight.

It is important to note that consuming mouldy apples is not recommended as they may contain harmful mycotoxins and bacteria that can cause adverse health effects.