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Liquid ammonia (NH3) and water (H2O) both show hydrogen bonding, describe what a hydrogen bond is and what it is conferred by

A hydrogen bond forms between the positive dipole of one molecule and the negative dipole of another molecule. They can be represented on a diagram with a dashed line perpendicular (at 90˚) to the bond angle...
BH
Answered by Ben H. • Chemistry tutor
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When should I use the accusative case?

The accusative is used for the direct object of a sentence. The direct object is the word (normally a noun) that receives the action of the verb. Example:Der Hund frisst den Toast - The dog eats the toastHer...
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Answered by Tom B. • German tutor
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What are the basic differences between Chinese and English grammar?

One of the differences between Chinese and English grammar is that in Chinese, we do not use 'tenses' in the same way as in English. In other word, there is no such things as 'ed,' 'has' 'had,' 'shall be,' e...
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Answered by Jessie Y. • Mandarin tutor
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What is the difference between Tumour supressor genes and Oncogenes?

Tumour supressor genes (TSG) and oncogenes and the two main types of genes involved in cancer, however they are very different. TSG normally function to slow down cell division, repair DNA mistakes and cause...
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Answered by Ella W. • Biology tutor
4447 Views

How to use 'depuis' in French.

'Depuis' is used in French to express a duration, in a similar way to 'since' and 'for' in English. The first and most typical use of 'depuis' is to express an action which began in the past, which is contin...
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Answered by Jacob B. • French tutor
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