since the masses are in grams, and moelcular weight is in g/mol, if you divide the mass by molecular weight you get just moles. just make sure what you do to one side of the equation you do to the other. And then just manipulate the equation the same way you did...
We know the mass of 1 W-188 atom is about 188AMU so we don't need to convert to moles. Can you see the Atoms W / atoms W cancel leaving AMU's?***next, let's cover sig figs. Your possible answers were (1) 940. AMU (with 3 sig figs) (2) 919 AMU (with 3 sig figs) ...
We are given the molar mass of aluminum. We can see that we first need to calculate the number of moles of aluminum produced. And using this value and the molar mass, we can then determine the mass. We are not given the number of moles of aluminum, but we are given other data. We...
Calculate the number of moles of O atoms in 13.27 g Mn(NO3)2. Hi I did this question and it seemed pretty easy but there is this online assignment I am...
If you purchase a primer or probe, it typically arrives in a tube as lyophilized powder, with a mass in picomoles (pmol—see list of units above), and needs reconstituting in a buffer prior to use. If you are struggling to calculate the req...
What mass of chlorine must be added to 100.0 L of water to achieve this level?I dont understand how to do this because on all the other problems i am looking for the PPM here i have it . can anyone please walk me all the way through this ... PLEASE ASAP Logged ...
convert the given concentrations into molarity. here the amount of pcl 5 before the reaction is 6 moles and the volume of the reaction vessel is 1 l. therefore, the concentration of pcl 5 is 6/1 moles/litre = 6 m. step 3 : make a note of the initial concentration and the change ...
% Concentration Definition: The percent of the solution that is solute. Units: Mass in grams (g); Volume in millilitres (mL). Analogy: Your grade on a test is the percent of the test that you got correct. There are 100 questions on the test = The solution is 100g Your got 45 corr...
Based on this model, a method for calculating the molecular and energy parameters such as the hydration number, amount of moles of hydrate, amount of gas and water in it, its density and molar mass, and the energy and rate of hydrate formation was developed. A comparison of the calculated...
The percent composition is obtained by dividing the amount (number of moles of the element multiplied by its atomic mass) of individual elements present in a compound by the molecular mass (sum of atomic masses of all the elements present in the compound) of the compound, multiplied by h...