A cyclone rotates faster and faster as pressure differences between areas of low and high pressure increases
Answer:
Explanation:
Why are compounds, such as NaCl, more stable than the elements that make them up?
the driving force for chemical reaction is that elements and compounds wil react until they produce more stable matter,
Na metal and Cl2 are very reactive. When they react with each other they become more stable as the Na+ and Cl− ions
Answer:
2. The glassware was not dried before use
4. The Magnesium ribbon was not wiped clean before use
Explanation:
Necessary precautions are required to be taken in the laboratory when Benzophenone reacts with phenylmagnesiumbromide in ether solution to produce Triphenylmethanol. Such precautions include proper drying of any glasswares used as well as the use of tight sealing glasswares during this experiment to ensure that the Grignard reaction is free of any traces of water or moisture. Any presence of moisture during the reaction would result in a decrease in the yield of triphenylmethanol produced thereby resulting in the decrease of the effectiveness of the Grignard reaction.
Answer:
A. In Bohr's model, the atom's mass is found at its center instead of distributed throughout.
Explanation:
The Plum-Pudding model of an atom was proposed by the late J.J Thompson. In this model, an atom is seen as negative charged particles that are surrounded by a soup of positive charge, which was liken to Plum Pudding, an English dessert.
While in Bohr's model of an atom; negatively charged electrons move in clearly defined circular orbits around the atom's mass (positively charged), called Nucleus.
The answer is C , hope I helped
