#Chemistry calculator moles how to#
#Chemistry calculator moles plus#

Let us understand the calculation of molar mass through some examples:Įxample 1: Calculate the molar mass of NaCl.

Step 4: Add all the individual masses, thus obtained to arrive at the final molar mass of the substance.

Step 3: In case, any element is present more than once in the compound, multiply its atomic mass by that number.

Step 2: Look up into periodic table and get the atomic masses of individual elements.

Step 1: Break down the formula of the compound into individual elements.

The steps involved in the calculation of molar mass are given below: Simply stating, molar mass can be calculated by adding the atomic mass of the total number of individual elements present in the given compound. The knowledge of molar mass is quintessential in studying the properties and reactions involved with various chemical compounds. Though the measurement of chemical substance involves grams, the final unit of molar mass is grams per mole.

Hence, the reason we talk about ‘molar’ mass of a given chemical substance. This is where a uniform terminology surrounded by moles comes into great help. This sounds little out of concept while dealing with intricate reactions. We cannot say heavier item or denser item when it comes to chemistry and reactions. The concept of molar mass eases comparison of two chemical substances. This concept of the mole is like a bridge between atomic chemistry and the physical chemistry that chemists deal in laboratories.Ī mole is the amount of a given substance that contains 6.023 x 1023 of its particles. Why? A mole is a standard unit which is used to compare any two compounds or substances and helps in performing calculations easily. You can also use our molar mass calculator.Though atom is the fundamental unit of a substance, in chemistry, it is the term ‘mole’ that is used for all calculations.

#Chemistry calculator moles how to#

Basically, you should know how to find the molar masses of any chemical compound now. Of nitrogen) + (six atoms x 16 grams/mole of oxygen) = 189 grams/mole ofįor all other compounds, the general idea is the same. Will be equal to (1 atom x 65 grams/mole of zinc) + (two atoms x 14 grams/mole The brackets multiplied by the subscript two). Multiplied by the subscript two) and six atoms of oxygen (three atoms in Have one atom of zinc, two atoms of nitrogen (one atom inside the brackets (1 atom x 56 grams/mole Fe) + (2 atoms x 35.5 grams/mole of chlorine) = 127 grams/mole of iron (II) chloride For example, in iron (II) chloride, or FeCl 2, you have one atom of iron and two atoms of chlorine. If you have a subscript in a chemical formula, then you multiply the number of atoms of anything next to that subscript by the number of the subscript.įor most compounds, this is easy. (1 atom x 23 grams/mole Na) + (1 atom x 35.5 grams/mole Cl) = 58.5 grams/mole NaClĢ. If we write this as a calculation, it looks like this:

#Chemistry calculator moles plus#

If we have a chemical compound like NaCl, the molar mass will be equal to the molar mass of one atom of sodium plus the molar mass of one atom of chlorine. Molar masses of chemical compounds are equal to the sums of the molar masses of all the atoms in one molecule of that compound. To do this, we need to remember a few rules.ġ. How can I find the molar mass of a chemical compound?įor any chemical compound that's not an element, we need to find the molar mass from the chemical formula. Still, aside from the exceptions above, all elements have the same molar mass as the atomic masses on the periodic table.

phosphorus is normally found in clumps of four atoms, P 4, and sulfur is found in clumps of eight atoms, or S 8. That each molecule of the element has two atoms of that element stuck together.Īs a result, the formula of hydrogen is H 2, nitrogen is N 2, etc. In the case of hydrogen, nitrogen, oxygen,įluorine, chlorine, bromine, and iodine, the element is diatomic, meaning In some cases, the element is usually found in a differentįorm than just one unbonded atom. So, in our example, carbon has a molar mass of 12.01 grams per mole. For example, if you want to find the molar mass of carbon, you would find the atomic mass of carbon on the periodic table, and this is equal to the molar mass in grams per mole. The molar mass of elements is found by looking at the atomic mass of the element on the periodic table. How can I find the molar mass of an element? It is also sometimes called: Molecular Mass, Molecular Weight, Formula Mass, or Formula Weight. One atomic mass unit (u) is equal to 1/12 the mass of one atom of carbon-12. Molar mass is the mass (in atomic mass units) of one mole of a of a substance.