Bromine.
Oxygen, selenium, and sulfur are all in group 16 and have 6 valence electrons. Bromine is in group 17 and has 7 valence electrons. The closer to 8 (a full, stable octet) you get, the less likely the element is to react.
The correct answer should be A
Total volume of the solution formed will be 32.5 liters
Given:
Molarity of solution = 0.0200 m
mass of nacl = 38.0 grams
To Find:
total volume of the solution
Solution: Molarity is defined as the amount of solute present in 1 L of solution. The equation used to determine molarity of the solution follows:
M = given mass of nacl/molar mass of nacl*1/volume of solution
volume of solution = given mass/molar mass*1/molarity
volume = 38/58.5*1/0.02 = 32.5
Hence, volume of solution = 32.5 litres
Learn more about Molarity here:
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B. is pretty false my dude
Answer:
The correct answer is - They gently shake the pan causing the marbles to move back and forth.
Explanation:
When water is heated the molecules present in its liquid state start to move and vibrate faster and allows the water to expand and increase in volume. If the heat is continuously applied to the water its molecules move even faster and escape in the form of molecules of vapor to the atmosphere.
To exhibit this phenomenon by the marble and pan, Richard and Brooke should gently shake the pan causing the marbles to move back and forth which shows faster vibration and movement of molecules.
