The staggered conformation in Newman projection has the lowest energy, which is the most steady arrangement. This is because all the C-H bonds are further away from another as possible due to the repulsion of electron clouds in the chemical bonds. So, the eclipsed conformation has the highest energy, means that it is the least steady arrangement as all the C-H bonds are arranged as near as possible. Figure 2: Staggered and eclipsed conformations of ethane The eclipsed conformer has higher energy compared to staggered conformations. For an example, the eclipsed conformation of ethane has extra 2.9 kcal/mol of energy compared to staggered conformation of ethane.
This was proved by utilizing the IR spectrum to verify the C=O was not in the final product as it lacked the 1640 cm-1 peak. The melting point of 113-115 degrees C proved that the final product obtained was the E-Stilbene. The TLC plate proved that the E and the Z product was produced, show cased by the double intensity of the DCM spot to the final product’s spot, both which had an Rf of 0.92. The double intensity proved that both products were produced, but through heating and filtering, the Z-Stilbene was
Venus’s atmosphere is mostly made up of carbon dioxide, while Earth’s carbon dioxide density is lower. Venus’s surface temperature is as high as 470°C and Earth’s temperature is much lower. 2) Why might you expect that Venus’s surface conditions should resemble Earth’s more than they do? One would expect more resemblance, because both
The design used four of the Schmitt triggers. 3.3.2 Resistors R1, R2 and R3 – 10kΩ 10kΩ value was used for all three resistors to maintain consistency. R3 – 1kΩ The R3 resistor was used as part of the amplifier component. Initially, a 10kΩ resistor was used instead of 1kΩ. However the sound produced from the speaker was too soft.
It's mainly because each substance has a different stability. The stability is based on the unbalance between the protons and neutrons. Protons that are positively charged and the electrons that are no surprise negatively charged. The number of protons and electrons the atom has, and the number of electrons it has gained or lost, results in different levels of stability. A substance which is less stable, will have a shorter half-life than a substance which is more stable.
This most likely affected the angle between the board and string. Therefore we then could have used inaccurate quantities when determining our answer. Another source of error that could have happened would be failure to account for a factor. An example of this would be station number four. To determine the weight of the board we used a leaning tower which had a “hidden” weight.
Unlike white noise, it is not continuous and hence becomes difficult to interpret because it occurs at random moments. This also makes it more disruptive. Answer 3: Crosstalks can occur when one signal during transmission mixes with some other signal and pick that up thereby disrupting the original message. Answer 4: When a signal moves through any medium, at the end of the medium it has a tendency
In this experiment, 293 mg of aldehyde was weighted for method 1 instead of 250 mg and. Although .7906 mg of phosphonium salt was added, this probably was not enough to complete the reaction. The only significant change throughout method was 1 was that the yellowish mixture became slightly lighter. However, it was found that after vacuum filtration, there was some white and yellow
Mineral oil contains many different hydrocarbons (10 to about 50 carbon atoms). Paraffins are one out of the three major classes of mineral oil hydrocarbons. Hydrocarbons and polar water molecules do not mix and because the hydrocarbons are not as dense as water, they just float on top of it. The light at the bottom of the lava lamp warms the hydrocarbon causing it to expand and
The 1:1 hexane to ethyl acetate solvent resulted in the best separation because it not only showed extra spots that the other solvent mixtures did not have, but also the 4 spots were relatively dispersed with Rf values at 0.77, 0.56, 0.27, and 0.10 (Figure 2). Missing spots were also noted on the hexane only TLC plate. The orange eluent was ultimately chosen as our major product because it had significantly different TLC results than the 3 yellow eluents with the same Rf of 0.23 (Figure 3). The percent yield for this purification method was 248% and the extrapolated percent purified yield was around 135 %, which are both erroneously high. These high percent yield may be due to extra water weight or not fully evaporated