![]() ![]() The number of grams of KClO3 will be 306.37. ![]() Multiply the given number of moles (2.50 mol) by the molar mass (122.548 g/mol) to get the grams. The molar mass of KClO3 is 122.548 g/mol. We hope this grams-to-moles calculator (or moles-to-grams calculator) will help you with your chemical calculations! You may also find our titration calculator useful. Solution: Find out the molar mass of the substance (hint: you can use Molar mass of the substance alone to calculate molar mass). So we now know we need 10.8 g of NaOH to exactly neutralize our amount of hydrochloric acid. Mole × molecular weight = mass (rearrange the equation),Īs 1.626×10 23 molecules of NaOH is also equal to 0.27 moles, and we know that the molecular weight of NaOH is 40, we can use these numbers to get: Mole = mass / molecular weight (multiply both sides by molecular weight), As we need to find the mass of NaOH to add, let's quickly rearrange the equation: Study with Quizlet and memorize flashcards containing terms like converting grams to moles, Determine the number of moles of CO2 in 454 grams of CO2. Now we know the number of molecules of HCl we have, and since the reaction is 1:1, we need the exact same number of molecules of NaOH to neutralize it. We can work out the number of molecules by multiplying the moles by Avogadro's constant above. ![]() Let's plug these numbers into the above equation: The result is the number of moles in your element or compound. We know we have 10 g of HCl, which has a molecular weight of 36.5 g/mol. Using a calculator, divide the number of grams by the molar mass. Let's do a quick example to help explain how to convert from moles to grams or grams to moles. If you wanted to find the concentration of the hydrochloric acid, you could use our concentration calculator. Click here to learn more about the molarity calculators. To know how to calculate moles, the equation is: The calculator will autopopulate other fields where possible. It is, therefore, useful to find out exactly how many molecules of HCl are in the solution. Then you multiply that by your 878 grams. You divide and find that 1 gram of fluorine is equal to 0.0525350025878 moles. As 1.626×10 23 molecules of NaOH is also equal to 0.27 moles, and we know that the molecular weight of NaOH is 40, we can use these numbers to get: mass 40 × 0.27 10. If you take your 878 grams of fluorine and then look at the atomic mass. mole mass / molecular weight (multiply both sides by molecular weight), mole × molecular weight mass (rearrange the equation), mass molecular weight × mole. First you must covert your grams to moles, then you can take the moles and covert to atoms. Now, you want the resulting solution to be perfectly neutral, so you don't want to add too much or too little NaOH, making it too basic or acidic respectively. You cannot directly convert grams to atoms. Let's say you want to neutralise 10 g of hydrochloric acid (HCl in water) with some sodium hydroxide (NaOH). So why do chemists use moles, and why do you need a mole calculator? Well, as we said above, it provides a useful metric when dealing with reactions. It turns out memorising that definition for my GCSE chemistry exam was pointless. Prior to that, a mole was defined as the number of atoms in 12 grams of carbon-12 (an isotope of carbon). The official International System of Units definition is that a mole is the amount of a chemical substance that contains exactly 6.02214076×10 23 ( Avogadro's constant) atoms, molecules, ions or electrons (constitutive particles), as of 20 th May 2019. A mole is how chemists define an amount of substance, useful when dealing with many different molecules reacting at once (i.e., any reaction). Just kidding – we're sure you've never heard that joke before. In general, this is done by multiplying the total number of moles per unit of volume by the total volume.įor this example, the substance has a density of 500 moles per mL of substance and there are a total of 3 mL of substance.A mole is a small, subterranean mammal belonging to the family Talpidae. How to calculate the number of atoms from moles?įirst, determine the total number of moles in the substance. Moles to Atoms DefinitionĬonverting moles to atoms is as simple as multiplying the number of moles by the 6.022 * 10^23 because by definition that is what a mole represents. To calculate the number of atoms from moles, multiply the number of moles by 6.0221415*10^23. The following formula is used to convert the total moles to total atoms. This calculator can also determine the number of moles given the atoms. The number of grams of KClO3 will be 306. ![]() The calculator will display the total number of atoms in those moles. Multiply the given number of moles (2.50 mol) by the molar mass (122.548 g/mol) to get the grams. Enter the total number of moles of a substance into the moles to atoms calculator. ![]()
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