To calculate the percentage of water of crystallization in Blue Vitriol, CuSO4⋅5H2O, we will follow these steps: Step 1: Calculate the molar mass of CuSO4⋅5H2O 1. Calculate the molar mass of CuSO4: - Copper (Cu): 63.5g/mol - Sulfur (S): 32g/mol - Oxygen (O): 16g/mol (ther...
Molar mass of urea (NHaCONH2)= 2(1×14+2×1)+1×12+1×16= 60 g mol-10.25 molar aqueous solution of urea means: 1000 g of water contains 0.25 mol =(0.25×60)g of urea = 15 g of ureaThat is,(1000+15)g of solution contains 15 g of ureaTherefore, 2.5 kg (2500 g) of sol...
Say you need to make a solution of 1M NaCl for a reaction you are running. How would you know how much salt to weigh out and then add to a given volume of water? To do this, you need to find a way to relate the mass of a compound (salt) to the number of moles of that comp...
This requires use of the molar heat capacity formula. That means you need the specific heat of water and the molar mass of water. The molar mass of water is 18.0 g/mol. molarheatcapacity=(4.18Jmol∗K)(18.0g1mol) Multiplying that together you get: molarheatcapacity=75.2J/mol∗K...
How would you know how much salt to weigh out and then add to a given volume of water? To do this, you need to find a way to relate the mass of a compound (salt) to the number of moles of that compound. The molar mass of elements tells you the molar mass of a compound, so ...
Calculate the molar heat capacity of water. The specific heat of water is 4.18 J/(gC). How do you determine the specific heat in a closed container? Calculate the specific heat capacity of the unknown metal in J/xK. [ U n k n o w n m e t a l ] i. Mass of metal: 33.996g ...
The molar mass of any solid, liquid, or gaseous substance is the number of grams of the substance in its molecular (molar) form that contains 6.0221367 X e^23 atoms of the substance (Avogadro's Number). This is because the mass of a substance is dependent on the molecular weight of the...
Express this as moles per kilogram solution. Now, you have 250 ml of water, which is about 250 g of water (assuming a density of 1 g/ml), but you also have 3 grams of solute, so the total mass of the solution is closer to 253 grams than 250. Using 2 significant figures, it's...
This example has neither the moles nor liters needed tofind molarity, so you must find the number ofmolesof thesolutefirst. To convert grams to moles, the molar mass of the solute is needed, which can be found on certainperiodic tables. ...
We first calculate the molar specific heat of steam, which is given as Cp,steam=4R where R=2cal/mol K. Cp,steam=4⋅2=8cal/mol KSince the molar mass of water is 18 g/mol, the specific heat of steam in cal/g°C is: Cp,steam=8cal/mol K18g/mol≈0.44cal/g°C Now we can...