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What is an unsaturated hydrocarbon?

Unsaturated hydrocarbons contain at least one carbon carbon double bond, the simplest is the alkene. They are more reactive than saturated hydrocarbons because they have the ability to...

Answered by Chloe A. • Chemistry tutor

17182 Views

How do you know whether to use the imperfect or perfect tense?

The perfect tense is used to for completed actions in the past. For example, le semaine dernier je suis allé en France would translate to last week I went to France. The imperfect is used for incomplet...

Answered by Megan P. • French tutor

5944 Views

How do you construct the perfect tense for verbs that take avoir?

The perfect tense is used to describe an action or event that occurred in the past. For example, you would use the perfect tense to express the phrase "I played football yesterday"

Answered by Megan P. • French tutor

3617 Views

How do you convert a number from denary to hexadecimal?

The simplest route to take when converting any number from denary to another number system is to first convert it to binary. The method for binary conversion is to divide the number in question by 2 repea...

Answered by Josh C. • Computing tutor

37968 Views

How does conduction work in metals?

A metal has free electrons, so when it is heated these electrons gain kinetic energy, meaning they move faster. As a result, these free electrons will collide with other electrons or ions, transferring en...

Answered by Josh C. • Physics tutor

7511 Views