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2Na + 2H2O -> 2NaOH + H2

Normalmente en mi tiempo libre me gusta pasar tiempo con mis amigos. Frecuentemente vamos a la playa y jugamos juntos al futbol allí. Ademas, nos gusta hacer surf pero desafortunadamente todavía no soy un...

Part-time staff are useful to business as they are contracted for less than 40 hours a week and are therefore usually more flexible than full time staff. This means that their hours can be adjusted more ...

When dealing with such a question, an expansion question, the first part of the equation to look at is the brackets.Looking at the question above, one can see that there are two pairs of brackets - it wou...

The first step with any simultaneous equation is to cancel out one of the variables. Here, 2y is a factor of 4y (it fits into 4y twice) so we can multiply the 1st equation by 2 to give us 4x+4y = 20.This ...