Answer Question 6 (1 point) What volume (in mL) of 13.5 M hydrochloric acid is needed to make (3.33x10^2) mL of (1....
Question 6 (1 point) What volume (in mL) of (1.06x10^1) M sodium hydroxide is needed to make (9.089 2x10^2) mL of 0.800 M solution? Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer
Question 6 (1 point) What is the molarity of a solution made by diluting (1.77x10^1) mL of 18.7 M ammonia with enough water to form (3.0782x10^2) mL of solution? Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer
Question 5 (1 point) If (1.69x10^1) g of silicon react with (3.402x10^1) g of chlorine gas to form silicon tetrachloride. What mass of silicon tetrachloride forms? Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Answer Question 6 (1 point) What is the molarity of a solution made by diluting (1.77x10^1) mL of 18.7 M ammonia with enough water to form (3.0782x10^2) mL of solution? Note: Your answer is assumed to be reduced to...
Question 1 (1 point) What is the sum of the coefficients when the following is balanced: Al + Fe2O3 --> Al2O3 + Fe 04 O 12 09 08 Question 2 (1 point) A (9.45x10^1).00 g sample of lithium reacts with an excess of chlorine to form lithium chloride. What mass of lithium chloride forms? Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer Question 3 (1 point) What is the molarity of...
Question 3 (1 point) What is the molarity of a solution made by dissolving (5.27x10^1) g of ammonium chloride in water to make (5.3525x10^2) mL of solution? Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: X10 Answer
Question 3 (1 point) Solution Composition: Molarity What is the molarity of a solution that contains (7.75x10^-1) mol of NH4Cl in (4.134x10^2) mL of solution? (Example answer: 1.23e-2 or 1.23) Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: X10 Answer
Question 6 (1 point) When answering this problem, report the answer with the appropriate number of significant figures. When entering units, use proper abbreviated units with proper capitalization. A buffer solution is prepared by combining 10.0 mL of 0.030 molar acetic acid with 20.0 mL of 0.030 molar sodium acetate. What is the concentration of weak base in this solution? Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Answer units
Question 2 (1 point) When (7.08x10^0) g of methane, CH4, burns in oxygen, water and carbon dioxide form. What mass of oxygen is needed to react completely with all the methane? Note: Your answer is assumed to be reduced to the highest power possible Your Answer: X10 Answer
Question 2 (1 point) When (4.51x10^1) g of magnesium hydroxide decomposes, magnesium oxide and water form. What mass of magnesium oxide forms? Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Answer Question 3 (1 point) Solution Composition: Molarity What is the molarity of a solution that contains (7.75x10^-1) mol of NH4Cl in (4.134x10^2) mL of solution? (Example answer: 1.23e-2 or 1.23) Note: Your answer is assumed to be reduced to the highest power...
Question 3 (1 point) Solution Composition: Molarity and Volume How many milliliters of (2.45x10^-1) M RbHCO3 solution contains (2.069x10^1) g of the solute? (Example answer: 12.3 or 1.23e-3) Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: