magnesium sulfate dihydrate is roughly sold as Epson salts. what fraction of magnesium sulfate is water...
A student forgets to weigh a mixture of sodium bromide dihydrate and magnesium bromide hexahydrate. Upon strong heating, the sample loses 233.374 mg of water. The mixture of anhydrous salts reacts with excess AgNO3 solution to form 5.65x10-3 mol of solid AgBr. Find the mass % of sodium bromide dihydrate in the mixture.
A. calculate moles of magnesium sulfate
b.calculate moles of water
c. The ratio of moles water: moles of magnesium sulfate.
d. Identify any potential sources of error.
Data Table 1 Sample 1 2 3 Mass of aluminum dish 1.24g 1.24g 1.24g Mass of aluminum dish + Epsom salt 1.99g 1.97g 2.14g .75g .73g 90g Epsom salt, original (hydrated) mass Mass of aluminum dish + Epsom salt after heating Epsom salt, heated (dehydrated) mass 1.62g 1.61g 1.72g .38g .37g .48g Mass...
Suppose you want to know the formula of a hydrate of magnesium sulfate. If you heat 1.998 g of the hydrate until all of the water is vaporized, the mass of anhydrous MgSO4 is 0.976 g. What is the formula of the hydrate, i.e. what is the value of x in MgSO4.xH2O? (The formula weight of anhydrous magnesium sulfate is 120.37 g/mol)
Hard water often contains dissolved calcium ion and magnesium ions. One way to soften water is to add phosphate salts. The phosphate ion forms insoluble precipitates with calcium and magnesium ions, removing them from solution. Suppose that a solution is 5.5×10−2 M in calcium chloride and 9.5×10−2 M in magnesium nitrate. What mass of sodium phosphate would have to be added to 11.5 L of this solution to completely eliminate the hard water ions? (Assume complete reaction.)
Epsom salt, magnesium sulfate heptahydrate, can be dehydrated by heating in an open crucible. Which value is closest to the fraction of the mass of salt in the crucible lost when the crucible is heated to constant weight? Multiple Choice A. 1/8 B. 1/4 C. 1/2 D. 1/3
In the laboratory you dissolve 23.8 g of magnesium sulfate in a volumetric flask and add water to a total volume of 500 mL. What is the molarity of the solution? 13 What is the concentration of the magnesium cation? What is the concentration of the sulfate anion?
What is the solubility of magnesium sulfate in terms of molality if K = 1.08×10-9 in: (a) pure water? (b) an aqueous solution with an ionic strength of 0.0020?
1. 51.8 g of magnesium sulfate heptahydrate is heated in an oven until all the water is driven off. What is the mass of the anhydrous compound?. 25.2 g 10.6 g O27.3g 24.5 g 26.5 g
What is the mass of 4.5 moles of magnesium sulfate?
Predict the van’t Hoff i-factor for each of the following salts dissolved in water: silver nitrate, magnesium chloride, potassium sulfate, nitric acid (HNO3, a strong acid), and acetic acid (CH3CO2H, a weak acid). not sure if more info is needed! this is all i got!