Disjoint means they have no elements in common. The union is the set of elements containing all elements from both sets. Since there is no overlap, the union will have 5+7 elements.
Therefore the answer is 12.
DDT contains 3 elements: carbon, hydrogen, and chlorine.
Aluminium Hydroxide contains elements of Aluimium, Hydrogen and Oxygen.
it contains nitrogen and oxygen. N2O4
8
The current periodic table contains 118 elements, as of April 2010, but many more may still be discovered.
S orbital contains only 2 electrons and not elements.
If they are disjoint faces, then 6*4 = 24 vertices.If they are disjoint faces, then 6*4 = 24 vertices.If they are disjoint faces, then 6*4 = 24 vertices.If they are disjoint faces, then 6*4 = 24 vertices.
The body contains 27 elements
Dodecane is a hydrocarbon and contains only two elements, carbon and hydrogen.
DDT contains 3 elements: carbon, hydrogen, and chlorine.
Aluminium Hydroxide contains elements of Aluimium, Hydrogen and Oxygen.
118
it contains nitrogen and oxygen. N2O4
nitrous oxide, or N2O contains two elements, Nitrogen and Oxygen
Because copper is considered an element, and because elements do not include other elements, copper only contains copper.
Na2O is a single compound. It contains 2 elements.
8