Consider the process of separating a mixture into its components. The added masses of the recovered components will ______ A.) sometimes B.) always C.) never (question continues below) ...equal 100% of the starting sample mass. Some of the mixture may have been lost during separation, leading to a percent recovery of ______ A.) exactly 100% B.) more than 100% C.) less than 100% ...some mixture components may contain water, leading to a ______ A.) higher B.) lower ....total mass of recovered sample and a percent recovery of_____ A.) more than 100% B.) less than 100% C.) exactly 100%

A mixture weighing 28.516g containers 4.518g NH4CL, 15.20g SiO2, with the remainder NaCl. find the percent, weight, of each component. Show you method for making the calculations.

I need help calculating some of the following values please. PLEASE show your work!! reaction equation: MnO4− + 5 Fe2+ + 8 H+ → Mn2+ + 5 Fe3+ + 4 H2O

mmunity College X x || X D2L ALEKS Learning Module 8 (due A X A ALEKS- Jessica Sceusa - Learn X G Write the empirical formula for a x + www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-lvWyv8WYLP6W0cqJcWJdIACROQwyw24GWHInCX70-Q0WaoxQiZ3DF-1EgBJkRS45QbFh_mdu6pQMT19A08TrT_6p5Ces O ||| O STATES OF MATTER Using the combined law gas Student - Home kPa For many purposes we can treat ammonia (NH3) as an ideal gas at temperatures above its boiling point of -33. °C. Suppose the temperature of a sample of ammonia gas is lowered from 19.0 °C to -25.0 °C, and at the same time the pressure is changed. If the initial pressure was 0.30 kPa and the volume decreased by 40.0%, what is the final pressure? Round your answer to 2 significant digits. Explanation Check X10 X K 0/5 © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Cent

3. Aluminum oxide has the empirical formula of AlsOy a. Calculate the % aluminum in Al,O, using the chemical formula. b. Calculate the % error for the percent aluminum calculated in question 2. COPYRIGHT 2013 Cengage Learning