Water breaks down into hydrogen and oxygen: It is a decomposition reaction as a single substance decomposes to give two products.
Leaves make starch using chlorophyll and carbon dioxide: Synthesis reaction: as the synthesis reaction involves two or more than two reactants which join together to result into a single main product along with the formation of simple by products.
Food burns in oxygen gas and releases a lot of energy: Combustion: Combustion process involves the use of oxygen to give products along with release of energy.
Adding vinegar (acid) to baking soda (alkali) gives a product that is neither acidic nor alkaline: Neutralization: acetic acid in vinegar reacts with soda (base) to give salt (neutral) and .
Answer:
Explanation:
There are two spheres name 1 and 2 and they posses the same charge, which is +q.
And they have equal mass which is 2.098 g.
The distance between these two spheres is, 
.
And the acceleration of each sphere is, 
.
Now the coulumbian force experience by 1 sphere due to 2 sphere,
.
And also the newton force will occur due to this force,
.
Now equate the above two values of force will get,
Further solve this,
.
Substitute all the known variables in above equation,
.
.
The type of relationship between atmospheric density and altitude is therefore inverse relationship. This means an increase in either will decrease the other factor. Density is mass per unit volume, it is difficult to calculate with only altitude 1,291 kilometers given. Else, we could also use temperature and pressure to solve density but they are not provided.
