Search over 10,000 free study notes

To form the perfect tense, you need two parts. The first part is known as the auxillary verb, which is either avere or essere. The second part is known as the past participle. So to say "I bought" ...

The reaction is as follows: 2H 2 + O 2 -> 2H 2 O This means that for every 2 molecules of Hydrogen gas, one molecule of Oxygen is needed to make 2 molecules of water To calculate the enthalpy of this reac...

The ratio of 3:1 involves 4 units. 3 men +1 woman. Find how many people each unit represents: 4units 2476 people Therefore each unit represents 2476/4 = 619 people per unit Now, take the ratio, and multiply ...

Standard form (sometimes called standard index form), is a way of writing out numbers. It is especially useful when it comes to VERY large or VERY small numbers, which normally would take lots of time (and p...

​What is diffusion? Diffusion is a natural process, definied as the net movement of particles from an area of high concentration to an area of low concentration . But what does this mean? Imagine you're goin...