Answer:
1. b
2.a
Explanation:
Photosynthesis is a useful reaction because it provides plants with food.... Rusting has disadvantages
Rusting is a slow process... complete combustion requires a lot of oxygen... photosynthesis requires carbon(IV) oxide and not oxygen
Engine is it ok ksndjsjja
In order to solve this type of problem, we take a look at the subscript of each element involved in the compound. These values signifies the number of particles present of that element in that compound. The calculation is as follows:
2.4 moles P2O10 ( 2 moles P / 1 moles P2O10 ) = 4.8 moles P
Answer:
Explanation:
Area of a circular hubcap is 615 square inches
Area of a circular shaped object is given by :

r is radius of hubcap.
If the radius of the hubcap were quadrupled, it means r' = 4r. New area will become:

A' is new area

New area of the hubcap is 9840 square inches.