This is how the periodic table is organized.
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Answer:
If you know that that free fall acceleration g on the Moon is about 6 times less than on the Earth, it gives you the answer: on the Moon the same pendulum will have a period about √6≈2.45 longer than on the Earth.
I got the 1.0g of coal producves 35,000 joules which is also 8.36 kcals
The six commonly recognised metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium....