Empirical Formula Lab Report

430 Words1 Page
bulb-icon

Recommended: Magnesium oxide formula

Conclusion : Theoretically, the empirical formula for magnesium oxide was MgO, only one of each element, and the percent composition of 60% magnesium and 40% oxygen. However, from the data collected during the lab, the empirical formula was found to be Mg2O, and the percent composition was calculated to be 75% magnesium and only 25% oxygen. These results point towards a more magnesium-heavy product being synthesized, with a practical magnesium percent composition rise of 15%. These discrepancies could have been caused by unyielding chemical reactions that took place. The magnesium had to be heated in the presence of air for approximately 2 minutes to ensure it bonded with nitrogen. Throughout the lab, heating the contents was a problem due to the wind and having the Bunsen burner turned down too low causing the crucible to turn black from the weak flame charring it. Because of this, the magnesium most likely did not have enough time and heat to react with the nitrogen …show more content…

The Bunsen burner should have been turned up higher from the beginning to ensure the heat was reaching its contents directly, not just the crucible. The window should be closed and the intensity should be turned up to prevent the wavering flame. By doing this, the reactions would have been more likely to take place and lead to the desired and expected results. Not allowing the water to evaporate completely could have affected the resulting mass and composition of the product. Having the heat turned up would also have saved time, which a big portion of was spent simply gathering supplies. This should have been done quicker so the lab could have been started sooner, preventing the rush towards the end when we barely had enough time to evaporate the water from the contents. By doing these things, the results of the lab could have been more accurate and discrepancies in the results could be

Show More
Related

  • Which Balanced Chemical Equation Best Represents The Thermal Decomposition Of Sodium Bicarbonate

    278 Words  | 1 Pages

    During our investigation we first decided how much sodium bicarbonate we would be using. We decided on 11 grams which was about half of the crucible. We then used the bunsen burner to heat up the sodium bicarbonate. We heated the sodium bicarbonate expecting there to would be a chemical reaction and the atoms would be rearranged during thermal decomposition. We heated the sodium

    Read More

  • Stoichiometry Lab Report

    1547 Words  | 4 Pages

    Compress the safety bulb, hold it firmly against the end of the pipette. Then release the bulb and allow it to draw the liquid into the pipette.

    Read More

  • Lab Report : Staphylococcus Epidermidis

    956 Words  | 2 Pages

    Other human errors could have affected the results, such as not inverting the plate before putting it into incubation would not allow for bacterial growth. Not pipetting the tube up and down to mix the bacteria that settled at the bottom of the tube before starting the Gram Stain would not allow for an accurate reading because there wouldn’t be many bacteria on the slide. Passing the slide over the bunsen burner too many times, hence killing the bacteria and not allowing for a Gram Stain. If this experiment had to be redone, one improvement would be to allow for more than one plate without a point deduction. Unexpected human errors might interfere with a person’s results.

    Read More

  • Alka Seltzer Dissolving at Different Temperatures

    3427 Words  | 7 Pages

    the replicate shows the same trend as the first experiment. I used a measuring cylinder and a beaker to measure out the amounts of water; however these did not seem to affect the quality of my results. To increase the accuracy of my results I could have perhaps used a burette. Even though I did the best I could to keep the experiment accurate, I did. some places there were mistakes that unintentionally occurred.

    Read More

  • Characteristic Property Lab

    647 Words  | 2 Pages

    The procedure of the lab on day one was to get a ring stand and clamp, then put the substance in the test tube. Then put the test tube in the clamp and then get a Bunsen burner. After that put the Bunsen burner underneath the test tube to heat it. The procedure of the lab for day two was almost exactly the same, except the substances that were used were different. The

    Read More

  • Baking Soda Stoichiometry

    533 Words  | 2 Pages

    The crucible itself weighed 22.04 g so together the baking soda and crucible weighted 23.04 g at the beginning. At the first weigh-in, after two minutes over the fire, the cup and powder weighed 22.67 g, meaning that something had occurred and the weight of the powder had decreased to .63 g. We placed the crucible back onto the fire and waited another two minutes to see if it had already stabilized or if we had to wait a bit longer for that to happen. At the second and third weigh-ins the weight had not changed much at all, only .02 g and .01 g, respectively. Decidedly, nothing much had changed, so we finished the experiment then, meaning .38 g of sodium bicarbonate had been lost in the reaction. The stoichiometry we did showed us that the first reaction of sodium bicarbonate decomposing into sodium hydroxide and carbon dioxide was the correct equation, because our math showed us that we should be left with about the same amount of the product as we were left with when we performed the experiment. The second and third times we did the experiment gave us the same results, even though we left the cup over the fire for five minutes instead of two, and for the third time we used a larger amount of baking soda to see if it gave us a different outcome (we left it on for five minutes again, but we still got the same result as the previous two

    Read More

  • 6.03 Calorimetry Lab

    483 Words  | 1 Pages

    On the lid of the calorimeter, there were two holes and one was being used for the thermometer, and the second one was left open. This hole could have let heat to escape as the reaction was taking place which would have lowered the final temperature value. These conditions would have led to a lower final temperature value. To prevent even the slightest anomalies in the future, any holes on the calorimeter can be covered by tape or another item that could block the passage. The top of the calorimeter could also be covered with aluminum and this would not only cover the holes but would secure the space under the lid so any heat that may escape would stay within the area due to the aluminum. Aluminum could also be tucked in the space between the lid and the calorimeter to once again lock the heat in. This way, the calorimeter will be more effective and maintain all the heat of the reaction resulting in values that are completely accurate and decreasing even the slightest

    Read More

  • Flame Post Lab

    575 Words  | 2 Pages

    In my team’s investigation, we were trying to figure out four unknown powders based on the known powders we had. Our research question was, how do different chemicals change the color of the flame. First in the experiment, we prepared our lab space by making sure we had a clear countertop and had a beaker full of water ready for the hot splint to be dumped into. We all put our hair back and put our goggles on and then proceeded to turn the Bunsen burner on. After we put the Bunsen burner on, Mr. Young adjusted our flame and we sent someone to grab the first chemical to burn. We burnt chemicals on the wooden splint one after one observing the color the flame produced, recording the color, and proceeded to put the splint in the water afterwards.

    Read More

  • Mole Ratios Lab Report

    1202 Words  | 3 Pages

    In the data (Q2) shows that we have approximately 0.0416mols of NaCl(aq), and also approximately 0.0416 of NaHCO3. In the end the yield for NaCl(aq)(product), we got was 3.077%. This percent is lower because of the incident that acquired during the lab. Which leads to possible errors that can happen during the lab. The percent was lower them hundred percent was because of the spill of the solution that happen while working on the lab. We lost a lot solution which affected the amount of mole for NaCl(aq) and the yield drastically from looking at the calculation. Another possible error can be when you are cooking the solution and didn’t get to evaporate all the water that is still visible in our eye, it can cause your calculation to be incorrect and less product you are looking for in the end. Last error can be when the electrical balance can malfunction during your experiment or it doesn’t work or possibly broken. These are some of the possible errors that can happen in the lab that can affect the data

    Read More

  • Analysis Of Hydrate

    1055 Words  | 3 Pages

    The number calculated for the moles of water per mole of anhydrous salt were precise, having a PPT of 0 since they were both the same. There was only a 1.75% error between the 2.035 mol of water per mol of anhydrous salt and the whole number of 2 that was needed for the empirical formula. The experiment was conducted both accurately and precisely. The all of the water was removed from the hydrate in the first trial, which can be confirmed by the fact that there was no change on the scale when the crucible was massed after the first heating and after the second heating. No change in mass means that there is no water left in the hydrate that could be removed. In the second trial, however, it is evident that almost all of the water was removed, seeing as there was a small change in the mass of the crucible between the first and the second heating. This difference was minimal, only being 0.0002 g. There are no obvious experimental errors that occurred, however there could have been the error of not heating the crucible long enough to get all the water out of the hydrate. If this had happened, the difference between the mass of the crucible after the first heating and after the second heating would have been more than 0.003

    Read More

  • Science Rocket Lab Report

    1364 Words  | 3 Pages

    This could be because we changed person doing a job every time, so the pressure was either too loose or too tight. Also, this could have been because the bottle had been to much in the tripod without being fired, so the bottle lost its hydrogen gas. Also because of the matches, it couldn’t have lit on time. There was a bit of mistakes in the experiment of 2 magnesium strips. As you can see they aren’t similar at all.

    Read More

  • Lab Report Molecular Formula

    1079 Words  | 3 Pages

    Following my research using the molecular formula, I dove deeper into my research and looked closely at my calculated data. My molecular formula is C_4 H_9 Cl. I used ChemSpider to match my formula to millions of compounds. The compounds that match my molecular formula are 1-Chlorobutane, Tert-Butyl Chloride, 1-Chloro-2-Methylpropane, 2-Chlorobutane, (2S)-2-Chlorobutane, and (2R)-2-Chlorobutane. (ChemSpider) C36843 has a density of 0.8601 g/mL. (Table 1) All of the calculated values of C36843 are shown in the above, Table 1. The density of 1-Chlorobutane is 0.886 g/Ml, the density of Tert-Butyl Chloride is 0.846 g/mL, the density of 1-Chloro-2-Methylpropane is 0.883 g/mL, the density of 2-Chlorobutane is 0.87 g/mL, the density of (2S)-2-Chlorobutane

    Read More

  • Chemical Kinetics Lab Report

    586 Words  | 2 Pages

    Chemical kinetics is a branch of chemistry that involves reaction rates and the steps that follow in. It tells you how fast a reaction can happen and the steps it takes to make complete the reaction (2). An application of chemical kinetics in everyday life is the mechanics of popcorn. The rate it pops depends on how much water is in a kernel. The more water it has the quicker the steam heats up and causes a reaction- the popping of the kernel (3). Catalysts, temperature, and concentration can cause variations in kinetics (4).

    Read More

  • Alka Seltzer Lab

    454 Words  | 1 Pages

    Many systematic sources of error may have occurred during this experiment leading to faulty in the collection of data, overall result and outcome of the experiment. One example of this is the age of each Alka-Seltzer tablet. If one Alka-Seltzer had been older than another, the amount of time it took for each tablet to react to the water would be different. Specifically, the older tablets would most likely take a longer time to the react to the water because they were more stale than the newer tablets that would be more fresh. This systematic error could have been avoided by making sure all the tablets came from a fresh new box and not different boxes. To be even more accurate, check the date on the back of the box to make sure all the tablets were made at the same time and that they were all recently made.

    Read More

  • The Harcourt Essen Experiment

    1470 Words  | 3 Pages

    There is also the potential of human error within this experiment for example finding the meniscus is important to get an accurate amount using the graduated pipettes and burettes. There is a possibility that at one point in the experiment a chemical was measured inaccurately affecting the results. To resolve this, the experiment should have been repeated three times.

    Read More

More about Empirical Formula Lab Report

Open Document