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CO2 present in the air can dissolve in rain water producing carbonic acid. This acid is weak but can give rain water a slightly acidic pH of around 5.6

When this rain water falls it reacts with the...

A protein molecule is a polymer which means it is built when lots of smaller molecules join together in a chain, like building blocks. These smaller molecules are called amino acids. There are are 20 diff...

The trick here is similar to remembering all complicated formulas in science: Assign some meaning to all letters that make some sense, and is easier to remember. Our formula here is pV=nRT, where p-pressu...

To determine which is better value, we need to determine the price per gram of each washing powder.
Bag 1:
For the 600g bag, this is done by dividing the price by the number of ...

There are two types of crust we need to know about: Oceanic crust and Continental crust. Oceanic crust is formed at mid ocean ridges where two plates pull apart. Here magma from the mantle upwells. When i...