Molar Mass of H2O:18.02 g/mol ElementSymbolAtomsMass % HydrogenH211.2% OxygenO188.8% Determine the molecular formula of the compound whose moles will be calculated. If this information is not already available, numerous reference books and online databases provide this information, including the Nati...
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...
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...
Molar mass of KMnO4= 158.0 g Use this number toconvertgrams to moles. moles of KMnO4= 23.7 g KMnO4x (1 mol KMnO4/158 grams KMnO4) moles of KMnO4= 0.15 moles KMnO4 Now the liters of solution is needed. Keep in mind, this is the total volume of the solution, not the volume of sol...
Molarity=NumberofmolesofsoluteVolumeofthesolution The volume must be expressed in terms of Litres. Answer and Explanation: Become a Study.com member to unlock this answer! Create your account View this answer Given data: The volume of K2Cr2O7 solution is 30.13 mL. ...
M = 0.62 moles NaCl / 0.50 liter solution = 1.2 M solution (1.2 molar solution) Note that I assumed dissolving the 6 grams of salt did not appreciably affect the volume of the solution. When you prepare a molar solution, avoid this problem by adding solvent to your solute to reach a ...
Molarity is the ratio of the amount of solute ( in moles) present in one liter of a solution.Answer and Explanation: Given: Mass of {eq}Mg S {/eq}, {eq}m = 20.7 \ \rm g {/eq} Volume of the solution, {eq}V = 899 \ \rm mL = 899 \ \rm mL \times \left( \df...
If 1.80 moles of NaCl was dissolved in enough water to make 3.60 L of the solution, calculate the following: a. Molarity. b. Grams/ Liter. c. % composition. An aqueous NaCl solution is made using 122 g of NaCl diluted to a total solution volume o...
Example 1: Calculate the temperature change that results from adding 250 J of thermal energy to 0.50 moles of mercury. Visualize the diagram of the Heat System and Surroundings with the arrow direction going into the system. Use the formula: _q = nCmΔT_ Since you are asked for the change...
mAl is the molar mass of aluminum; Vp is the volume of the solution; mAl3 + is the mass of aluminum in the solution. Since in aluminum oxide, there are three oxygen atoms per two aluminum atoms, the mass of the oxide can be expressed through the mass of the metal: ...