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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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What is the formula mass of C6H12O6?
The molecular mass of C2H6 is 30.07 g/mole
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 the atomic mass of ekasilicon?
The atomic mass is 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: C12H22O11Formula Weight: 342.3Carbon: 12 * 12.01 g/mol = 144.12144.12/342.3 = 42.10% CarbonYou can always check the other elements to double check:Hydrogen: 22*1 = 2222/342.3 = 6.4% HydrogenOxygen: 11*16.01 = 176.11176.11/342.3 = 51.44% Oxygen
What is the molecular mass in pentane?
Molecular mass of pentane is 72 u.
What is the formula mass of C6H12O6?
The molecular mass of C2H6 is 30.07 g/mole
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 the percent composition by mass of C10H14O?
Percent composition means finding the total mass of each element in a molecule and then dividing it by the molecular mass. Use the molecular formula to help you find out how many atoms of each element you'll need. For carbon: 6 C x 12 g = 72 g For hydrogen: 10 H x 1 g = 10 g For oxygen: 5 O x 16 g = 80 g Molecular mass = C + H + O = 72 + 10 + 80 = 162 g Percent composition of C = 72/162 = 0.4444 = about 44.45% Percent composition of H = 10/162 = 0.061728395 = about 6.17% Percent composition of O = 80/162 = 0.49382716 = about 49.38%
What is mass number of Gallium-72?
72
Atomic number of vinegar?
Vinegar itself is a mixture of water and acetic acid. water is H2O Acetic acid is HC2H3O2
What is the atomic mass of ekasilicon?
The atomic mass is 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!
A chemical reaction yields 3 moles of lithium hydroxide LiOH How many grams of lithium hydroxide are present?
Remember the general moles equation. moles = mass(g) / Mr NB 'Mr' means the relative molecular mass. The Mr for LiOH can be calculated from the Periodic Table using Atomic masses. Atomic mass (Li = 7 ) Atomic mass (O = 16) Atomic mass (H = 1) Add 7 + 16 + 1 = 24 (The Mr of LiOH) Substituting in to the moles eq'n 3 = mass(g) / 24 Algebraically rearrange mass(g) = 3 x 24 mass = 72 g
What is the mass of 72 kg?
72 kilograms is 158 pounds and 11.72 ounces.
what element has 21 protons 21 electrons and 24 neutrons?
chromium
What is the atomic mass for germaium?
Germanium is a metal element. Atomic mass of it is 72.
