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Calculate the pH of a solution containing 0.085M nitrous acid (ka = 4.5 x 10-4) and 0.100M KNO2.
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What is the minimum amount of 6.0 M H 2 SO 4 necessary to produce 25.0g of H 2 (g) according to the reaction between aluminum and sulfuric acid? 2 Al(s) + 3 H 2 SO 4 (aq) --------> Al 2 (SO 4 ) 3 (aq) + 3 H 2 (g)
A sample of gas in a cylinder has an initial volume of 56.0 L , and you have determined that it contains1.60 moles of gas. The next day you notice that some of the gas hasleaked out. The pressure and temperature remain t ...
How many moles of magnesium ion are present in 5.25g Mg 3 (PO 4 ) 2 ?
A 35g copper cup contains 89g of drinking water. The copper cup is placed into a cooling device consisting of an insulated container which holds 85g of water equal in temperature to the drinking water. Ammonium chloride ...
If you carry out the reaction between table salt (NaCl) and copper(II) sulfate (CuSO4) in 100.0 mL of water, the salt copper(II) sulfate will behave similarly to the salts given in the tab named Slightly Soluble Salts. E ...
How many molecules of butane (C4H10) are contained in a 9.213 g sample? How many hydrogen atoms are contained in this sample?
Explain why the mass of the crucible and anhydrous salt is less than the mass of the crucible and the hydrate. What is the chemical formula of copper (II) sulfate?
What is the molarity of a solution made by dissolving 20.0 g of CrCl2 in 0.150 L of solution?
A 3.15- sample of NH4NO3 is introduced intoan evacuated 2.26- L flask and then heated to 245 C. What is the total gas pressure, in atmospheres, in the flask at245 C when the NH4NO3 has completely decomposed?
A student is doing the experiment Chemical Formulas of Copper Sulfide by heating copper with excess of sulfur at very high temperatures using a Bunsen burner. Copper and sulfur react stoichiometrically and excess of sulf ...
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