m (molality)=moles of solute/kg of solvent
To calculate moles of solute you convert 292.5 g of NaCl to moles of NaCl. So (292.5gNaCl)(1mole NaCl / 58.4gNaCl)= 5.0085 moles NaCl
Now plug and chug.
0.25m=5.0085moles NaCl / x
x=5.0085 moles NaCl /.25m
x=20kg
Ca(solid) + 2H2O(liquid) ---> Ca(OH)2(aqueous solution) + H2(gas)Here is the word equation if needed!Calcium + Water ---> calcium Hydroxide + HydrogenHope it helped! =)
Unless the equation has an aqueous compound in it, there is no net ionic equation. CaCO3 ====CO2+ CaO becouse its not in an aqueous solution no net ionic is needed you science teacher probably just wants to see if know when to use net ionic equations
More than 45,5 g KNO3.
It depends on the strength of the solution you want. 3.33g of AgNO3 is 0.0196 moles. Ish. So from there, you need to work out how much water is needed to create your required strength. 1.42 moles of silver nitrate is the maximum you can dissolve in 100g of water.
We first calculate the amount, in moles, of NaCl that we will need.Amount of NaCl needed = 0.24 x 400/100 = 0.096mol. Mass of NaCl needed = (23.0 + 35.5) x 0.096 = 5.616g So to produce 400ml of 0.24M NaCl solution, accurately add 5.616 grams of NaCl to 400ml of deionised water.
It depends on the amount of solute.
To break the attractions between particles of solute.
To make aqueous Eosin Y solution, dissolve Eosin Y powder in distilled water at a desired concentration. Stir well until the powder is completely dissolved. Adjust the pH if needed with a small amount of sodium hydroxide or hydrochloric acid to achieve the desired color intensity.
For every molecule of glucose (C6H12O6) produced in photosynthesis, 6 molecules of water (H2O) are needed. Therefore, 6 moles of water are needed to produce 1 mole of glucose.
No. a solution doesn't need water to dissolve. it can be dissolve in different type of liquids. for example a regeform. regeform only can dissolve in petrol. nailpolish only can dissolve in spirits or acid
To find the amount of solution, we first determine the number of moles in 16.9 g of ammonium acetate. Then, we use the molarity to calculate the volume of the solution needed. Finally, we convert the volume from liters to milliliters.
2.5 g of Nacl is to be dissolve in 100ml of water gives 10ppm of Na solution.
The law is:Needed electricity in coulombs = Faraday constant (96500 C) x number of molesSo 96500 coulombs are needed.
The leaf was rinsed in water to rehydrate it. Iodine solution is an aqueous solution of iodine/potassium iodine - potassium tri-iodide; water is needed inside the leaf to enable penetration by diffusion.
The presence of a nonvolatile solute in an aqueous solution lowers the vapor pressure of the solution, raising its boiling point and lowering its freezing point compared to the pure solvent. This occurs due to the solute molecules occupying space at the surface of the solution, reducing the number of solvent molecules escaping into the vapor phase. As a result, a higher temperature is needed to reach the same vapor pressure as the pure solvent for boiling, and a lower temperature is needed for the solution to freeze.
A saturated solution is made when you have added so much solute that no more dissolves. The amount of solute needed to make a saturated solution will change with the temperature of the solution.
To produce 1L of 10% ammonia solution from 25% ammonia solution, you need to dilute the 25% solution by adding a calculated amount of water. To do this, you can calculate the volume of the 25% solution needed and the volume of water needed using the formula: C1V1 = C2V2, where C1 is the initial concentration (25%), V1 is the initial volume, C2 is the final concentration (10%), and V2 is the final volume (1L).