1 is c 2 is b 3 is 1 d 4 is a
Allene (1,2-propadiene) has point group D2d, itself is achiral because it has two planes of symmetry. ... An allene with substituents on one terminal carbon atom are unlike and substituent on other terminal carbon atoms are same, allene will be achiral. It will have one symmetry plane.
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Answer:
The answer is B) aluminum is a good conductor of heat.
Explanation:
For the other three choices, they all say the properties when aluminum reacts with other molecules, they are called chemical property.
Answer:
Conservation of mass mean mass cannot be created nor destroyed
Explanation: