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In an experiment to determine the formula of a salt M2( SO4)3 x XH2O a sample of 2.239g of the sample was reacted with BaCl2. After filtration and drying the sample of BaSO4 weight 3.329g
a. Find the percent sulfate in the unkown sample.
b. when a 2.894g sample of the unkown sample was heated its weight was 1.367g what is X?
c. Determine the identity of M above?
If only 10ml of 3.0 M KOH were used in the alum preparation instead of the specified 25 ml,would KOH then become the limiting reactant? Write the chemical equation for the conversion of Al(s) to solid aluminum alum KAL(SO4)2*12H2O (S)
If 323 g of magnesium reacts with excess oxygen to produce 296 g of magnesium oxide, what is the percent yield for the reaction?
A 80.0-L stainless steel container was charged with 4.00 atm of hydrogen gas and 5.00 atm of oxygen gas. A spark ignited the mixture, producing water. What is the pressure in the tank at a constant temperature of 25°C?
what volume of hydrogen at STP is produced from the reaction of 50.0g of Mg and the equivalent of 75g of HCl?
Consider a mixture of ingrediants at equilibrium for this reaction. 2 PH3 (g) P2 (g) + 3 H2 (g) Which of these is true if the container volume
Many gases are shipped in high-pressure containers. Consider a steel tank whose volume is 65.0L and which contains O2 gas at a pressure of 16,500kPa at 23°C.
a 1.00 liter solution contains 1.00 mol of weak acid HX. After 0.60 mol of Oh- is added to this olution, the pH of the solution is 4.00. Calculate the Ka for the acid HX.
how many milligrams of hydrazoic acid ( ka= 1.9x10^-5) must be in a 5.0-L solution that has a pH of 4.90?
If 10.00 mL of 0.250 M NaOH solution is added to 100.00 mL of the above original buffer solution (described in part 1 of this problem), what is the new pH of the solution?
formation of a compound cannot be truly explained. What is your view on this topic? Are there any other factors that should be considered?
The ball is used on the driveway at temperature of -7 degree C and feels flat. What is the actual pressure of the air in the ball ? What is the gauge pressure?
If 2.50 g CuSO4 are dissolved in 8.0E2 mL of 0.25 M NH3, what are the concentrations of Cu2+, Cu(NH3)42+, and NH3 at equilibrium
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