Mass O2 = = 16.832 g
<h3>Further explanation</h3>
Given
43 grams of potassium chlorate
Required
Mass of O2
Solution
Reaction
2KClO3 ⇒3O2 + 2KCl
Mol KClO3 :
= mass : MW
= 43 g : 122,55 g/mol
= 0.3509
From the equation, mol O2 :
= 3/2 x moles KClO3
= 3/2 x 0.3509
= 0.526
Mass O2 :
= 0.526 x 32 g/mol
= 16.832 g
Answer and Explanation:
Elements : 
these are not compounds because for making compound there should be at least combination of two different elements but are made up of same type of elements so these are elements
Compounds: 
these all are compound because they are made up of different types of elements after combining together
Ocean water moves in predictable ways along the ocean surface. Surface currents can flow for thousands of kilometers and can reach depths of hundreds of meters. These surface currents do not depend on weather; they remain unchanged even in large storms because they depend on factors that do not change.
Answer:
Halogen
Explanation:
Because it belongs to the group 7 on the periodic table
As it breaks down the surface , it reshapes it
