Melinda Maxi

Aluminum is the lighter than mercury.

YES....YES....YES....Yes :"> :"> :"> :"> :"> :"> :"> :">

Mercury Sulfide is a compound composed of mercury and sulfur and the molecular formula is HgS.

He would not have had a barometer. He would have had a glass tube stuck into a bowl of Mercury, with nothing in it. Because once the hole was made the vacuum would be gone and the mercury would fall back down to the bowl.

It takes the vacuum in the tube to create a barometer.

To measure the temperature calibrated in the thermometer.

Mercury as a liquid reacts well to temperature changes. It expands as it gets warmer, so thermometers measure the rise of the mercury to measure temperature.

You can see it just before sunrise and just after sunset depending on the relative positions of the Earth and mercury. It is very close to the sun so you will need to know when and where to look

You can hold mercury in your hand -- I've done it. Perhaps not a good idea, mercury is poisonous, but it's only absorbed through the skin very, very slowly, so a single exposure isn't going to hurt you. If you do it wash your hands afterwards.

One atmosphere (ATM or torr) is equal to 760 millimeters of mercury (mmHg's)