Answer:
A velocity-time graph shows how velocity changes over time. The sprinter's velocity increases for the first 4 seconds of the race, it remains constant for the next 3 seconds, and it decreases during the last 3 seconds after she crosses the finish line.
Answer:
Atomic Mass: 78.96 amu. Melting Point: 217.0 °C (490.15 K, 422.6 °F) Boiling Point: 684.9 °C (958.05005 K, 1264.8201 °F) Number of Protons/Electrons: 34 ... [Bohr Model of Selenium] ... im sorry hope this helped
Explanation:
How do you know how many atoms are in a chemical formula?
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in the formula. It also represents the number of molecules of that compound. has 4 sodium atoms, 2 sulphur atoms, and 8 oxygen atoms. When you count atoms, remember to multiply the coefficient number and the subscript number to find the number of atoms of that element.
Answer:
Explanation:
Combustion can be defined as the burning of a compound in the presence of oxygen to produce carbon dioxide and water. Because it involves the release of heat (energy), it is referred to as an exothermic reaction.
Fuel is an <u>organic compound</u> and it's combustion will also go through the process above and also <u>releases heat (exothermic reaction)</u> into the atmosphere after burning. However, same can be said about forest fire also; as the forest is made up of plants (whose major <u>constituents are organic </u>also). The forest fire can also be termed as combustion because it burns in the presence of oxygen, <u>releasing heat (energy) into the atmosphere</u> (which also makes it an <u>exothermic reaction</u>).
Answer:
they both have seven electrons in the outer shell
they are all just one electron shy of having full shells