Molar

this calculated information, the found molar mass of the unknown solute B was about 278.4g/mol, which is close to given molar mass of octadecanol. Conclusion- This lab allowed us to determine the molar mass of the unknown solute B by finding the difference in freezing point temperature of the cyclohexanol and the solution with the unknown solute B. My experimental value for the molar mass was 278.4g/mol which means that solute B is octadecanol because its molar mass is 270g/mol. This means…

would be too high because the gas being recorded would not only include hydrogen gas, but the air that leaked into the eudiometer as well. Because the volume of hydrogen gas would be too high the calculated molar volume of hydrogen would also be too high. This is because to find the calculated molar volume of hydrogen you divide the recorded volume of hydrogen gas by the theoretical number of moles of hydrogen. And because the theoretical number of moles doesn’t change that means the higher the…

Metal Carbonate Purpose The purpose of this lab is to find the mass of an unknown metal by conducting a double-displacement precipitation reaction, which is our gravimetric analysis. Once we find the precipitate mass, we can then find the molar mass by using the molar ratio given in the reaction equation. Procedure First, we set up the ring stand with a Bunsen burner, put a crucible on top of the pipe stem triangle and heated the crucible for a minute, then let it cool down. We then massed…

•Hydatidiform mole also known as molar pregnancy, a benign tumor that develops in the uterus. A molar pregnancy starts when an egg is fertilized, but instead of a normal, viable pregnancy resulting. The placenta develops into an abnormal mass of cysts. •The cause of a hydatidiform mole is from a low protein intake. Contributing factors of molar pregnancy are caused by an abnormally fertilized egg. Risk factors that are associated with molar pregnancy are maternal age, more likely a woman older…

Figure 4, we can see the relationship between density and molar mass to be a proportional relationship. The positive slope of the scatter plot confirms this relationship. This means that as molar mass of is greater, the density of the gas will also be greater, and if the molar mass of a gas is smaller, the density of the gas will be smaller. For example, hydrogen gas will have a lower density than nitrogen gas because hydrogen has a smaller molar mass than nitrogen. Conclusions In conclusion,…

The CEO of a large perfume factory needs to know the best way of safely transporting n-hexanol, which is used in manufacturing perfumes, to his factories. Therefore, the purpose of this experiment was to find the most beneficial way to transport an alcohol. Specifically, if transporting n-hexanol in hot or cold temperatures works best or if another alcohol should be used. A volatile liquid is a liquid that evaporates readily at room temperature or a liquid that has a measurable vapor pressure…

molecules. This property of volatile liquids was utilized in this experiment to determine the molar masses of unknown volatile liquids by employing the ideal gas law in the course of vaporization and condensation of the liquids. This was done by taking measurements of volume, temperature, mass, and pressure throughout various steps of the experiement. These findings were then applied to the ideal gas law and molar masses were obtained. The experimental data found from the calculations were…

the point of infection, or had a comparably short developmental time, there may not have been enough intake in nutrition for somatic proliferation. There was a slight correlation found in somatic growth with the maturation of molars, but not in anterior teeth (Dean, 2010). Molar development can help distinguish the difference in somatic growth in differing maturation times. It takes 12 years for a great ape to fully develop; however, in modern humans it takes 18, providing a standard in…

the solution solidifies, it appears around the inside of the test tube, it’s opaque, and it looks like ice. The resulting molar weight for this lab was 103 grams. This molar weight was significantly lower than the molar weights of benzophenone and naphthalene. Naphthalene had the closest molar weight of 128.17 grams. The percent error was high at 19.6%. The reason the molar weight was too low because the final freezing point of the solution was too small. The change in temperature was increased…

volumetric analysis with the titration technique. The theory is that if the volume and molar concentration of the standardized sodium hydroxide (NaOH) solution is known, then the percent by mass of the acetic acid (CH3COOH) in vinegar can be calculated after a titration.1 Within this experiment, a NaOH solution was standardized with a primary standard acid of potassium hydrogen phthalate (KHC8H4O4) in order to determine the molar concentration of the NaOH solution.1 The standardized NaOH…