Alka Seltzer, and similar over-the-counter combination antacid and pain relief medications, contain aspirin acetylsalicylic acidcitric acid, and NaHCO3 as the active ingredients. Place the Alka Seltzer tablet into the water in the mL beaker. This is how to calculate molar mass average molecular weightwhich is based on isotropically weighted averages.
This site explains how to find molar mass. We use the most common isotopes. An assumption in the discussion above is that all of the NaHCO3 in the tablet is reacted when the tablet dissolves.
Total mass of beaker and contents after reaction g 7. Weigh the beaker and water and record the mass. The excess reagent, usually a non-critical reagent or an inexpensive material, is used to insure that all of the critical reagent is used up so that there will be a maximum amount of product formed.
These relative weights computed from the chemical equation are sometimes called equation weights. Place the Alka Seltzer tablet into the water in the mL beaker.
Formula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. Safety goggles and aprons must be worn at all times. How do these two factors affect the results of your analysis in this experiment?
Acidic compounds that induce this reaction include phosphatescream of tartarlemon juiceyogurtbuttermilkcocoaand vinegar. Clothing can become contaminated with toxic dust of depleted uranium DUwhich is very dense, hence used for counterweights in a civilian context, and in armour-piercing projectiles.
Browse the list of common chemical compounds. Print out the graph and include it with your laboratory report.
Create a graph with five data points by plotting the mass of reacted NaHCO3 in each beaker y-axis against the volume of vinegar x-axis. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes.
Show calculation or explain your answer for Beaker 5 here.
Reagents are generally not mixed in exact amounts needed for the reaction to take place, there is usually one of the reacting materials added in excess. When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance.
Also, baking soda can be used as a multipurpose odor remover. Weigh the beaker and water and record the mass. The amount of carbon dioxide produced by the reaction of sodium bicarbonate with acetylsalicylic, citric, and acetic acid will be determined by massing the reaction components beaker, solution, and tablet before and after the evolution of CO2 gas.
To complete this calculation, you have to know what substance you are trying to convert. Thus, our chemical equation now takes the form: This site explains how to find molar mass. You can continue to alternate beakers, running the additional experiments in simultaneous, but staggered trials.
We use the most common isotopes. Measure 35 mL of distilled water into a mL beaker. As early as the s, bicarbonate was found to cause increased bone strength in patients who were losing calcium in their urine.Mar 15, · What is the percent by mass of NaHCO3 in a solution containing 10 g NaHCO3 dissolved in mL H2O?
What is the percent by mass of NaHCO3 in a solution containing 80 g NaHCO3 dissolved in mL H2O? More questionsStatus: Resolved. If a compound has a molar mass of g/mol and its empirical formula is CH2O, what is its molecular formula? C6H12O6 What is the percent composition of sodium hydrogen carbonate (NaHCO3)?
Heating g of an unknown NaHCO3-NaCl mixture resulted ina mass loss of g. 1) Calculate the mass of NaHCO3 present in the original mixture. 2) Calculate the mass percent of NaHCO3 in the uknown mixture ; Chemistry g of NaHCO3 is dissolved in g of water. Feb 03, · What is the percent by mass of NaHCO3 in a solution containing 80 g of NaHCO3 dissolved in mL of H2O?
What is the percent by mass of NaHCO3 in a solution containing 80 g of NaHCO3 dissolved in mL of H2O? Follow. 1 answer 1. Report Abuse.
Are you sure you want to delete this answer?Status: Resolved. Mar 15, · How to determine the mass percent of sodium carbonate? "One of the active ingredients in Alka-Seltzer is sodium carbonate, NaHCO3. a student analyzes an Alka-Seltzer tablet to determine the % by mass of NaHCO3 present in the joeshammas.com: Resolved.
Oct 08, · a) Calculate the mass of NaHCO 3 used. b) Calculate the % yield. 2. Relevant equations NaHCO 3 + HCl = NaCl + H 2 O + CO 2. 3. The attempt at a solution In our attempt to answer the questions, we first assumed the grams only related to the NaCl + H 2 O part of the above equation and that the grams relates to the CO 2.