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9/12 = 3/43/4 * 280 = (3 * 280) / 4 = 3 * 70 = 210so only 210 g is needed for 9 cookies.

H₂ + Cl₂ -> HCl(g)Type of solution: acidic

The resultant force is firstly a key-word that any examiner will notice and so it will benefit your chance of getting the marks straight away. It helps us describe whether the forces are balanced or wheth...

Both the perfect and imperfect tenses are forms of the past tense - for describing events or actions which have already happened. The perfect tense (le passé composé) is used when an action was a one-off ...

There are two methods to pick one counter of each. Either pick the (1)green counter first and then blue, or a (2)blue counter first and then green. We must calculate the probability of both of these scena...