The reason is that the molar mass of the substance affects the conversion. It would be: As there are 6 molecules of water, you count the 6 for both the Hydrogen and the Oxygen. This is better explained with an example: MgNH4PO4*6H2O. Molar mass of 6H2O calculation? Favorite Answer. Molar mass is, as the name implies, the mass of one mole … Do we count the 6 or do we disregard it in the calculations? And molar mass of Co (NO3)2 .6H2O is 182.93+ 108= 290.93 g/mol. The Henry's Law constant for CO2 in water is 0.0313 M/atm at 25°C. The 6 is simply stating that you have 6 moles of H2O and is therefor disregarded in the calculation of water's molar mass. Explanation of how to find the molar mass of CoCl2 • 6H2O: Cobalt (II) chloride hexahydrate. Molecular weight calculation: 6 + 1.00794… Browse the list of Work out the mass of 1 mole CuSO4.6H2O. Just add up the molar mass of every element in the hydrate and multiply by the amount of atoms it has in the compound. Molar mass CuSO4.6H2O = 63.55 + 32.06 + (10 x 16.00) + (12 x 1.008) = 267.71 g/mol. I went to a Thanksgiving dinner with over 100 guests. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100. Please explain ? The easiest way to do this is assume you have 1 mole of the compound. Answer Save. Convert grams 6H2O to moles or moles 6H2O to grams. Explanation of how to find the molar mass of CoCl2 • 6H2O: Cobalt (II) chloride hexahydrate. 6 + 1.00794*2 + 15.9994. Lv 7. How does an incomplete reaction occur in steam distillation and what does it have to do with equilibrium? 6(2(1.01)) + 16.00. or 2(1.01) + 16.00. Molar mass of 6H2O = 24.01528 g/mol. of a chemical compound, More information on Finding molar mass starts with units of grams per mole (g/mol). It means that each FeCl3 has 6 H2O molecules associated with it. By signing up, you'll get thousands of step-by-step solutions to your homework questions. This compound is also known as Nickel(II) Chloride Hexahydrate. Molar mass of NiCl2.6H2O = 237.69108 g/mol. You have to incorporate the 6, but use it last. The chief was seen coughing and not wearing a mask. ›› NiCl2.6H2O molecular weight. Heat can drive the water off and leave the anhydrous FeCl3 behind, but if left in moist air, it will most likely reabsorb 6 water molecules to form the stable hydrated complex again. Molar Mass, Molecular Weight and Elemental Composition Calculator Enter a chemical formula to calculate its molar mass and elemental composition: Molar mass of MgCl2*6H2O is 203.3027 g/mol If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. so take the molar mass of water (about 18) and multiply is by 6. its about 108 g. Still have questions? Join Yahoo Answers and get 100 points today. Norrie. The .6H2O is known as hydration. Nickel(II) Nitrate Hexahydrate Ni(NO3)2.6H2O Molar Mass, Molecular Weight Finally to determine the molar mass (mass of 1 mole) of your molecule all you have to do is to add-up 1 mole of an atomic mass of each element times the number of times it's present. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. 1 Mg = 24.305 g/mole. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. Then work out the mass of H2O in the 1 mole of CuSO4.6H2O. The … Molar mass is, as the name implies, the mass of one mole of a compound. The molecular mass (m) is the mass of a given molecule: it is usually measured in daltons (Da or u).Different molecules of the same compound may have different molecular masses because they contain different isotopes of an element. which makes you more jittery coffee or tea? 4 Answers. Calculate the molecular weight Convert grams NiCl2.6H2O to moles or moles NiCl2.6H2O to grams. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass. Anonymous. Relevance. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. Of benzoic acid specifically . Do we count the 6 or do we disregard it in the calculations? This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. Similarly, the molar mass of H2O is 18 g/mol. common chemical compounds. For example, there are 2 Al and Al has a molar mass of 27.0 g/mol so you multiply 27.0 x 2=54.0 g/mol. 9 years ago. Molecular weight calculation: 58.6934 + 35.453*2 + 6*(1.00794*2 + 15.9994) ›› Percent composition by element Hope this helps! Nickel(II) Sulfate Hexahydrate NiSO4.6H2O Molar Mass, Molecular Weight It would be: 6 [(2(1.01)) + 16.00] 6 [2.02 + 16] 6 [18.02] 108.12 . 1 P = 30.974 g/mole. 1 N = 14.007 g /mole. ›› 6H2O molecular weight. To complete this calculation, you have to know what substance you are trying to convert. Molar Mass, Molecular Weight and Elemental Composition Calculator Enter a chemical formula to calculate its molar mass and elemental composition: Molar mass of Co(NO3)2*6H2O is 291.0347 g/mol Should I call the police on then? Answer to: Calculate the molar mass of Ca(BO2)2 6H2O. What is the molar concentration of CO2 at a partial pressure of 1.25 atm? Acetone and ethanol are not suitable for Grignard reaction why? 1 2. ? O=16.0 g/mol * 18. 10 O = 10(15.999 g/mole) = 159.99 g/mole. Therefore the correct calculation is the second one you have provided giving H2O the molar mass of 18.02 g/mol, the 6 means there are 6 total molecules of water. When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance. We use the most common isotopes. S=32.1 g/mol * 3. The 6 is simply stating that you have 6 moles of H2O and is therefor disregarded in the calculation of water's molar mass. … Al=27.0 g/mol * 2. Formula:FeCl3.6H2O Enter a chemical formula to calculate molar mass,The molar mass calculator can be used in Chemical industry and medicine industry. A common request on this site is to convert grams to moles. 9 years ago. Get your answers by asking now. Formula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. molar mass and molecular weight. This site explains how to find molar mass. After you do that for all the elements, you just add them. Therefore the molar mass of hexahydrates will be 18 x 6= 108 g/mol. What doe TLC analysis suggests about the purity of the product? It's not really chemically part of the same molecule, but it has formed a stable complex. 16 H = 16(1.008 g/mole) = 16.128 g/mole. So the total mass of 1 mol CuSO4.6H2O = 267.71 g. 1 mole CuSO4.6H2O contains 6 moles of H2O You have to incorporate the 6, but use it last. At a given temperature, the vapor pressures of pure benzene and pure toluene are 183 mm Hg and 59.2 mm Hg, respectively. Convert grams 6H2O to moles or moles 6H2O to grams, Molecular weight calculation: Surgeon general: What to do if you had an unsafe holiday, Report: Sean Connery's cause of death revealed, Padres outfielder sues strip club over stabbing, Biden twists ankle playing with dog, visits doctor, Mysterious metal monolith in Utah desert vanishes, Jolie becomes trending topic after dad's pro-Trump rant, How Biden's plans could affect retirement finances, Legendary names, giant joints and a blueprint for success, Judges uphold Kentucky governor's school order, Reynolds, Lively donate $500K to charity supporting homeless, Trump slams FBI, DOJ while denying election loss. These relative weights computed from the chemical equation are sometimes called equation weights.