e.g. pliers, cutters, crimps, wire wrapping tools, etc., if youre meaning electronic hand tools
Answer:
2 elements.
Explanation:
N is your Nitrogen and H is your Hydrogen. Elements are just one specific kind of atom. You have two elements with names Nitrogen and Hydrogen. Therefore, you have two elements.
Puede tomar los valores enteros positivos: n= 1, 2, 3, 4, 5, 6, 7. Por ejemplo si tengo un elemento químico que su último nivel es el 3s, su número cuántico principal sería el 3. Si tengo un elemento químico en que su último nivel es el 1s, entonces su número cuántico principal sería 1.
(Question 1 points 3).
Food fuel is the fuel in which we use farmland or crops for bio-fuels production to the detriment of the food supply. whereas, mechanical fuel is a material used to produce energy when it is burned. Petroleum products (gasoline, kerosene, and bunker B) are the best being used as a mechanical fuel worldwide.
(Question 2 points 3).
This is because they are lightweight, spread easily, less volatile and are relatively persistent in the environment.
