Encyclopaedia Britannica states that there are 602,000,000,000,000,000,000,000, or 602 followed by 21 zeroes, atoms in a mole. This number is read aloud as "602 sextillion" and is a reference to Avogadro's number, which ... More »

There are 1.204 x 10^24 atoms of hydrogen present in 18 grams of water. In order to calculate this, it is necessary to compute the number of hydrogen moles present in the sample. More »

One neutral atom of sodium has 11 electrons. A sodium ion has 10 electrons. More »

By definition, one mole is equal to the number of atoms in 12 grams of carbon-12. This is known as Avogadro's number, sometimes expressed as 6.022 x 10^23. To determine the moles in a sample of any element, you need to r... More »

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The molar mass of calcium is 40.07 grams per mole, which is the same as the atomic mass of the element. The molar mass is found by determining the mass of a substance present in a single mole. More »

The molar mass of MgO is about 40.30 grams per mole. The molar mass can be determined from the atomic weight of each element, which is listed on the periodic table of elements. MgO is the chemical formula for the compoun... More »

Chloroacetic acid is a compound with the formula C2H3ClO2 and a molecular weight of 94.5 grams per mole. It is a colorless or white crystalline solid that is corrosive and soluble in water. More »

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