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When to know when to use simple past or imperfect tense?

The imperfect tense is used for an ongoing action, meaning that the action has started but it hasn't finished yet. It is lasting in time, for example: "Je tenais dans mes mains une assiette." (&...

Answered by Afrah M. • French tutor

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What is an operating system.

An operating system is a system software found within a computer system which ensures that the computer peripherals and softwares installed onto the system are functioning properly. The o...

Answered by Awais A. • Computing tutor

2411 Views

What different types of 16 mark questions will I answer?

There are a few ways examiners require you answer a 16 mark question. In bold are the key words. Key words can be the theory(theories), topic(s) or stems they are asking you to evaluate. Generic examples ...

Answered by Georgina W. • Psychology tutor

12252 Views

Alcohols can be converted into alkenes by removing water. The alcohol 3-methylpent-2-ol forms a mixture of organic products when dehydrated. Describe the conditions of this reaction. Name all the organic products.

Heated under reflux with an acid catalyst such as H3PO4 or H2SO4

3-methylpent-1-ene

E-3-methylpent-2-ene

Z-3-methylpent-2-ene

Answered by Abigail B. • Chemistry tutor

2981 Views

Talil is going to make some concrete mix. He needs to mix cement, sand and gravel (1: 3:5) by weight. Talil wants to make 180 kg of concrete mix. He has 15 kg of cement, 85 kg of sand, 100 kg of gravel. Does he have enough to make the concrete?

In order to answer this question you need to find out how much cement, sand and gravel is needed to make 180kg of concrete mix. To do this you must find out how many parts the concrete mix ratio is made u...

Answered by Katie M. • Maths tutor

31797 Views