(Hg atomic mass = 200) As a result, 68 moles of mercury are found. One mole is the amount of matter in the universe that has the same number of electrons as one atom of carbon-12. It is equal to 6.02 × 1023 atoms. Therefore, 68 moles of mercury equal 6.02 × 1023 atoms of mercury.
The number of moles of any element can be calculated by multiplying the atomic weight by the concentration of the element in its most abundant form on Earth. For example, copper is found in abundance in the earth's crust as elemental copper. Its concentration in water is very low (about 1 part in 100,000). However, when oxidized, it becomes cupric oxide IUPAC name: copper(II) oxide, which is much more soluble in water. So, to calculate the number of moles of copper in the water, you would use its concentration in its most abundant form (elemental copper) and then divide by 2 since there are two electrons in each copper atom's valence shell.
In this case, the calculation is easy because the concentration of mercury in its most abundant form is known.
Mercury is a naturally occurring chemical element that may be found in rocks in the earth's crust, including coal deposits. It is represented on the periodic table by the symbol "Hg," and its atomic number is 80. The only other element with a higher atomic number is rhodium, which is used in optics and jewelry. Nature also provides us with other heavy metals that are essential for life as well, such as iron, copper, zinc, and calcium.
When humans remove these essential elements from the environment, they leave behind toxic substances called heavy metals. Heavy metals are not destroyed by normal methods of disposal such as burning or dumping in landfill sites. They remain in the environment long after the cause for which they were removed has been resolved. This can have negative effects on humans who are exposed to them over a long period of time.
Heavy metals that may be found in rocks in the earth's crust include mercury, arsenic, cadmium, chromium, lead, and uranium. Of these, mercury is the most harmful if it enters our water supply. Arsenic, cadmium, and chromium are also very toxic if they enter our system, but because they're usually in low concentrations, they're not too dangerous for humans to handle without adverse effects.
This instrument is based on pure mercury (Hg) and its density of 13.534 g/cc. Formula: 1 cm3 of mercury = 13.534 grams Convert mercury measurement units between milliliters (ml) and grams (g), but not from grams to milliliters. To convert between these there are several options, for example you could use these conversions.
21.2 million Mercury atoms fit into one solar mass.
The Sun is approximately 99.8% gas, with only 0.2% solids. The solid portion is called "debris" or "dust". A total volume of about 5%. It is estimated that there are between 100 and 1000 billion Earths contained within the Sun. This would mean that each grain of sand has a planet orbiting it with life on it!
The Sun is aging. Its average lifetime is 10 billion years, but some reaches up to 19 billion years while others less than 4 billion years. Our Sun will run out of hydrogen fuel cells around 7 billion years from now, when its core temperature will exceed 2 x 10^7°C (3.6 x 10^8°F). At this point, it will begin to expand rapidly until it consumes itself in about 5 million years.
Our galaxy has at least 100 billion stars, if not more. The Milky Way has at least 200 billion planets, including our own. So in just one galaxy we're told there are hundreds of billions of planets!