NH2CONH2 (Urea) Molar Mass - ChemicalAid

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Find the Molar Mass of Urea, NH2CONH2 Step-by-Step

There are 4 easy steps to find the molar mass of NH2CONH2 based on its chemical formula.

1. Count The Number of Each Atom

The first step to finding the molar mass of Urea is to count the number of each atom present in a single molecule using the chemical formula, NH2CONH2:

Element	Number of Atoms
N (Nitrogen)	2
H (Hydrogen)	4
C (Carbon)	1
O (Oxygen)	1

2. Find Atomic Mass of Each Element

Next, using the periodic table, find the atomic mass in g/mol of each element (the molar mass of an element is equal to its atomic mass):

Molar Mass (g/mol)
N (Nitrogen)	14.0067
H (Hydrogen)	1.00794
C (Carbon)	12.0107
O (Oxygen)	15.9994

3. Compute Mass of Each Element

Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in NH2CONH2:

Molar Mass (g/mol)
N (Nitrogen)	2 × 14.0067 = 28.0134
H (Hydrogen)	4 × 1.00794 = 4.03176
C (Carbon)	1 × 12.0107 = 12.0107
O (Oxygen)	1 × 15.9994 = 15.9994

4. Sum Each Element's Mass

Finally, add together the total mass of each element to get the molar mass of NH2CONH2: 28.0134 g/mol + 4.03176 g/mol + 12.0107 g/mol + 15.9994 g/mol = 60.05526 g/mol

5. Find Mole Fraction

To find the mole fraction and percentage of each element in NH2CONH2, divide each total from step 3 by the total molar mass found in step 4:

Mole Fraction	Percent
N (Nitrogen)	28.0134 ÷ 60.05526 = 0.46646	× 100 = 46.646%
H (Hydrogen)	4.03176 ÷ 60.05526 = 0.067134	× 100 = 6.7134%
C (Carbon)	12.0107 ÷ 60.05526 = 0.199994	× 100 = 19.9994%
O (Oxygen)	15.9994 ÷ 60.05526 = 0.266411	× 100 = 26.6411%

Molecular Weight of NH2CONH2

60.0553 g/mol

The molar mass and molecular weight of NH2CONH2 is 60.055. Edit Elemental Percent Composition

Convert NH2CONH2 From Moles to Grams

Moles mol Convert to Grams and Molecules

Convert NH2CONH2 From Grams to Moles and Molecules

Weight g Convert to Moles

Composition of Urea - NH2CONH2

Element	Symbol	Atomic Mass	# of Atoms	Mass Percent
Nitrogen	N	28.0134 g/mol	2	46.646%
Hydrogen	H	4.0318 g/mol	4	6.7134%
Carbon	C	12.0107 g/mol	1	19.9994%
Oxygen	O	15.9994 g/mol	1	26.6411%

Urea Element Mass PercentNitrogen28.0134gNitrogen28.0134gOxygen15.9994gOxygen15.9994gCarbon12.0107gCarbon12.0107gHydrogen4.0318gHydrogen4.0318g NH2CONH2 # of AtomsHydrogen4Hydrogen4Nitrogen2Nitrogen2Carbon1Carbon1Oxygen1Oxygen1 🛠️ Calculate Molar Mass

Instructions

This program determines the molecular mass of a substance. Enter the molecular formula of the substance. It will calculate the total mass along with the elemental composition and mass of each element in the compound.

• Use uppercase for the first character in the element and lowercase for the second character. Examples: Fe, Au, Co, Br, C, O, N, F.
• You can use parenthesis () or brackets [].

Finding Molar Mass

Read our article on how to calculate molar mass.

This molar mass calculator will find the molar mass of a compound and show a step-by-step solution including all calculations to get the answer. You can also ask for help in our chat or forums.

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