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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...

There are no easy ways to remember the correct way to use certain verbs with certain nouns, so it is best just to memorise them. Although it might not seem important, in reality it will help you to increase ...