Αποτελέσματα Αναζήτησης
Mole Calculation Practice Worksheet Solutions Answer the following questions: 1) How many moles are in 25.0 grams of water? 1.39 moles 1 mole H 2O = 18.0 g H 2O 25 g H 2O 1 mol H 2O 18.0 g H 2O 2) How many grams are in 4.500 moles of Li 2O? 134.6 grams 1 mole Li 2O = 29.90 g Li 2O 4.500 mol Li 2O 29.90 g Li 2O 1 mol Li 2O
Calculating pH and pOH worksheet W 335 Everett Community College Tutoring Center Student Support Services Program 1) What is the pH of a 0.0235 M HCl solution? 2) What is the pOH of a 0.0235 M HCl solution? 3) What is the pH of a 6.50 x 10-3 M KOH solution? (Hint: this is a basic solution – concentration is of OH-)
Solutions for the pH practice worksheet: The important thing to remember for all of these problems is that pH = -log [H + ], and that [H + ] is equivalent to the molarity of acid present in a solution.
Mole Calculation Worksheet W 340 Everett Community College Tutoring Center Student Support Services Program 1) How many moles are in 40.0 grams of water? 2) How many grams are in 3.7 moles of Na 2 O? 3) How many atoms are in 14 moles of cadmium? 4) How many moles are in 4.3 x 1022 molecules of H 3 PO 4? 5) How many molecules are in 48.0 grams ...
1 mole = molar mass (could be atomic mass from periodic table or molecular mass) 1 mole = 22.4 L of a gas at STP ( You do not need to worry about this yet ) Each definition can be written as a set of two conversion factors.
Calculate the mass of sodium oxide that can be produced. Calculate the pH of the solution. (Hint: Determine the mole and concentration that is left over from the reactant that is in excess after the reaction.) 3.1 4Al(s) + 3O2(g) → 2Al2O3(s) 97,2 g Al reacts and produce 150 g aluminium oxide. Calculate the percentage yield.
pH Calculations – Worksheet 1. Think of two ways, you can change the pH of a solution: a. _____ b. _____ 2. +If a solution is basic, its [H 3 O ] must be _____ than 1 x 10-7 3. Calculate the pH of the following: a. +normal rainwater with a [H 3 O ] of 0.0000026 mol/L _____ b. +household ammonia with a [H 3 O ] of 3.2 x 10-13 mol/L _____ c ...
