Which item is a pure substance? A. 10 carat gold

B. Solid gold

C. Cake mix

D. Ocean water

Avalue that describes how heavy an object is and is related to the force of gravity is

Diamond will scratch quartz. true or false

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?