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The heat of vaporization of methanol, CH3OH, is 35.20 kJ/mol. Its boiling
point is 64.6°C. What is the change in entropy for the vaporization of
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A solution of HCl is known to be 0.5622 N. When titrated against KOH, 45.22 ml of the acid neutralized 48.23 ml of the base. Calculate the N of the base.
What is the pH of the solution containing 0.20 M NH3 and 0.15M NH4Cl?
Given the equation 10 Na + 2 NaNo3. ------ 6 Na2O + N2
How many grams of NaNo3 must be reacted in order to produce 4.5 g of Na2O?
Given the equation 6 K + B2O3----- 3 K2O + 2B
How many grams of B will be produced if you react 6.25 g of K are reacted?
Given the equation 10 Na + 2 NaNO3--- 6 Na20 + N2
How many grams of Na must be reacted in order to produce 30g of Na2O?
Given the equation 6K + B2O3 ---- 3 K2O + 2B
If i react 2.5 g of B2O3 How many grams of B will be produced?
Given 2 H3PO4 + 3 Mg(Oh)2---Mg3(PO4)2 + 6 H2O
If you react 2.75 g of Mg(OH)2 you will produce how many grams of H2O?
Given 2 H3PO4 + 3 Mg(OH)2 --- Mg3(PO4)2 + 6 H20
How many grams of H3PO4 must be reacted in order to produce 0.33 g of H2O?
Given 2 H3PO4 + 3 Mg (OH)2---Mg(PO4)2 + 6 H2O
How many grams of H3PO4 must be reacted with 10.55 g of Mg (OH)2?
Given 2 H3PO4 + 3 Mg (OH)2 --- Mg3 (PO4)2 + 6 H2O
How many grams of H2O will be produced in the same reaction that produces 2.68 g of Mg3 (PO4)2?
Given the Equation 6K + B2O3. 3K2O + 2B
How many grams of K2O will be produced whe you react one 3.5 g of B2O3
The normal boiling point of C6H5Br is 156.15 celsius . Using Trouton’s Rule find the
vapor pressure at 100 Celsius and compare with the observed value of 141.1 mm Hg.
Calculate the pH of the following acid or base.
What happened to the number of moles in a sample that originally occupied
500mL with 3.50 moles and then occupied 700 ml?