Present Perfect Tense in Spanish

The Present Perfect Tense The present perfect tense is a compound tense, which does not require an auxiliary (helping) verb. We use this tense when talking about events that were true in the past and still are true. In example, the sentence “I have lived here for ten months”, means that 10 months ago I…

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Direct Object Pronouns in Spanish

Direct object nouns and pronouns A direct noun receives the action of the verb directly and generally follows the verb. In the example below, the direct object noun answers the question What is Maite writing ?  When a direct object noun is a person or a pet, it is preceded by the word a. The…

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Synthesis of Aspirin

Image adopted from http://www.ch.ic.ac.uk/rzepa/mim/drugs/html/aspirin.htm Aspirin, also called acetylsalicylic acid, is a well-known aromatic acetates Synthesis of Aspirin is basically a product from esterification of salicylic acid. Salicylic acid is phenolic (phenols) hydroxyl which has the structural formula of aromatic (benzene) with hydroxyl (alcohol) attached to a Carbon atom. The detailed lab procedure and materials can…

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The Future Tense in Spanish

The Future Tense Description  We use the future tense to describe actions that will take place. In English, the word will (or shall) is the essence of the future tense, and simply placed before any given verb, this tense is formed: I will go; You will eat; We will study,.. and so on.

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CS50x Puzzle Day 2017

About CS50x Puzzle Day It’s an annual puzzle day hosted by CS50 course from Harvard University with association from Facebook. It was only hosted within the Harvard University until last year of 2016. 2017 was the second worldwide puzzle day that was hosted. You will be able to download the puzzle packet that contains 8…

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The Preterite Tense (Past tense) in Spanish

The Preterite Tense The preterite tense allows us to refer to specific past actions  (1) at a fixed point in time, (2) a specific number of times, or (3) during enclosed amount of time. The key to is recognize whether our demand, which in this case is conjugating a verb, has the three characteristics mentioned…

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Indirect Object Pronouns in Spanish

Indirect Object Pronouns The indirect object pronouns are used in both paper 1 and 2 of the final examination. These pronouns usually tells for whom or to whom the action is done. For example; Carlos me dio un anillo.                             Carlos gave…

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