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There are many compounds with a relative mass of 72.

Eg. pentane (C5H12), methyl butane (CH3)-(C4H9), dimethyl propane (CH3)2-(C3H6). Inorganic formula's can not easily be guessed, but undoubtly be found.

Only one (isotope of an) element has the relative mass of 72: Gallium, (Ga-72), but this is not a natural, stable isotope. Gallium has not a molecular formula (being a metal like aluminum) only an atomic symbol: Ga.

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12y ago
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4mo ago

The molecular formula of an element with a relative mass of 72 could be selenium (Se), which has a molar mass of approximately 78.96 g/mol.

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Q: What is the molecular formula of relative mass of 72?
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What is the formula mass of C6H12O6?

The formula mass of C6H12O6 (glucose) is calculated by summing the atomic masses of the elements in the compound. The atomic masses of carbon (C) is 12.01, hydrogen (H) is 1.01, and oxygen (O) is 16.00. Hence, the formula mass of C6H12O6 is (6 * 12.01) + (12 * 1.01) + (6 * 16.00) = 180.16 g/mol.


What is the molar mass of 2-pentanone?

Pentane has the molecular structure C5H12 So multiply the number of each atom with its molecular mass. (see the periodic table) 5*12 + 12*1 = 72 gram per mole. Or more accurately: 5*12.01078 + 12*1.007947 = 72.149264 g/mole


What percentage of each glucose molecule is made up of carbon?

* Percentage mass = atomic mass of required element/ total mass of compound. * Glucose is represented by the formula C6H12O6. The relative molecular mass (Mr)= (6 x 12) + (12 x 1) + (6 x 16) = 180. # Let's start with carbon: one atom of carbon has an atomic mass of 12, but there are 6 atoms of carbon in an molecule of glucose. 6 x 12 = 72. Divide this by 180 and multiply by 100 to give 40%. # Next, we have hydrogen. Each atom has an atomic mass of 1. Multiply by 12 to give 12. Then divide by 180 and multiply by 100, to give 6.6% # Finally, there's oxygen. One atom of oxygen has an atomic mass of 16, so multiply 16 by 6, which gives 96. Divide this by 180, then multiply by 100 to give 53.3%. * To check that these % masses are correct, add the percentages to ensure they make 100: 40 + 6.6 + 53.3 = 99.9%, which is close enough!


What is the percent composition of carbon in the compound sucrose?

Sucrose has a chemical formula of C12H22O11. To calculate the percent composition of carbon, determine the molar mass of carbon in sucrose: 12 (number of carbon atoms) x 12.01 g/mol (molar mass of carbon) divided by the molar mass of sucrose (342.3 g/mol) x 100. The percent composition of carbon in sucrose is approximately 42.11%.


What is the atomic mass of ekasilicon?

The atomic mass of ekasilicon is approximately 118.71 grams per mole.

Related questions

What is the molecular mass in pentane?

Molecular mass of pentane is 72 u.


What is the formula mass of C6H12O6?

The formula mass of C6H12O6 (glucose) is calculated by summing the atomic masses of the elements in the compound. The atomic masses of carbon (C) is 12.01, hydrogen (H) is 1.01, and oxygen (O) is 16.00. Hence, the formula mass of C6H12O6 is (6 * 12.01) + (12 * 1.01) + (6 * 16.00) = 180.16 g/mol.


What is the molar mass of 2-pentanone?

Pentane has the molecular structure C5H12 So multiply the number of each atom with its molecular mass. (see the periodic table) 5*12 + 12*1 = 72 gram per mole. Or more accurately: 5*12.01078 + 12*1.007947 = 72.149264 g/mole


What is mass number of Gallium-72?

72


What percentage of each glucose molecule is made up of carbon?

* Percentage mass = atomic mass of required element/ total mass of compound. * Glucose is represented by the formula C6H12O6. The relative molecular mass (Mr)= (6 x 12) + (12 x 1) + (6 x 16) = 180. # Let's start with carbon: one atom of carbon has an atomic mass of 12, but there are 6 atoms of carbon in an molecule of glucose. 6 x 12 = 72. Divide this by 180 and multiply by 100 to give 40%. # Next, we have hydrogen. Each atom has an atomic mass of 1. Multiply by 12 to give 12. Then divide by 180 and multiply by 100, to give 6.6% # Finally, there's oxygen. One atom of oxygen has an atomic mass of 16, so multiply 16 by 6, which gives 96. Divide this by 180, then multiply by 100 to give 53.3%. * To check that these % masses are correct, add the percentages to ensure they make 100: 40 + 6.6 + 53.3 = 99.9%, which is close enough!


What is the percent composition of carbon in the compound sucrose?

Sucrose has a chemical formula of C12H22O11. To calculate the percent composition of carbon, determine the molar mass of carbon in sucrose: 12 (number of carbon atoms) x 12.01 g/mol (molar mass of carbon) divided by the molar mass of sucrose (342.3 g/mol) x 100. The percent composition of carbon in sucrose is approximately 42.11%.


What is the mass of 72 kg?

72 kilograms is 158 pounds and 11.72 ounces.


How many moles are in 72g of Calcium Sulphate?

To calculate the number of moles in 72g of Calcium Sulphate (CaSO4), we need to know the molar mass of CaSO4, which is approximately 136.14 g/mol. Then use the formula: moles = mass / molar mass. So, moles = 72g / 136.14 g/mol ≈ 0.53 moles of CaSO4.


What is the atomic mass for germaium?

Germanium is a metal element. Atomic mass of it is 72.


What is the mass number of Ge?

The mass number of Ge, or germanium, is 72.


How many pounds are in 72 kilos?

There are approximately 158.73 pounds in 72 kilograms.


What is 72 over A in simplest form?

72/A in its simplest form is 72/A, and that is all it ever can be, unless we have a formula that tells us what number 'A' is equal to.