Explain how you could find the mass and weight of an object on Earth, and the mass and weight of the same object on the moon. How would mass and weight be similar and different in these two places?

mass of a particular object remains the same where ever it is placed, the mass will remain the same whether the object is on the moon or earth, unlike weight which will change.

Weight is affected by gravity. Therefore it is dependent on gravity or directly proportional to the force of gravity.

weight = mass × gravity

The gravity on earth is much larger than the gravity on the moon. Therefore the weight of an object weighs heavier on earth than on the moon. The object when placed on the moon will have a lower weight.

The difference is that the weight of the object on the moon will be lower than the weight of the object on earth.

The similarity is that the mass of an object will remain the same, regardless if it's placed on the moon or earth.

Hope this helps.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.