The most stable conformation of
trans-1-tert-butyl-2-methylcyclohexane is the one in which both the
tert-butyl group and the methyl group are located near the equatorial position.
Trans conformation are usually stable at the equatorial position to avoid the
bulkyl group ( the tert-butyl group and methyl group) be together to reduce the
so called Steric hindrance.
Answer:
D. 91.0%
Explanation:
Hello,
In this case, for the given chemical reaction:
![Na_2S+2AgNO_3 \rightarrow Ag_2S + 2NaNO_3](https://tex.z-dn.net/?f=Na_2S%2B2AgNO_3%20%5Crightarrow%20Ag_2S%20%2B%202NaNO_3)
Next, since silver nitrate (molar mass 169.87 g/mol) is in a 2:1 molar ratio with silver sulfide (molar mass 247.8 g/mol), we compute its theoretical yield as shown below:
![m_{Ag_2S}^{theoretical}=4.27gAgNO_3*\frac{1molAgNO_3}{169.87gAgNO_3} *\frac{1molAg_2S}{2molAgNO_3}*\frac{247.8gAg_2S}{1molAg_2S}\\\\m_{Ag_2S}^{theoretical}=3.11gAg_2S](https://tex.z-dn.net/?f=m_%7BAg_2S%7D%5E%7Btheoretical%7D%3D4.27gAgNO_3%2A%5Cfrac%7B1molAgNO_3%7D%7B169.87gAgNO_3%7D%20%2A%5Cfrac%7B1molAg_2S%7D%7B2molAgNO_3%7D%2A%5Cfrac%7B247.8gAg_2S%7D%7B1molAg_2S%7D%5C%5C%5C%5Cm_%7BAg_2S%7D%5E%7Btheoretical%7D%3D3.11gAg_2S)
Next, we compute the percent yield as:
![Y=\frac{m_{Ag_2S}^{actual}}{m_{Ag_2S}^{theoretical}}*100\% =\frac{2.86g}{3.11g} *100\%\\\\Y=91.0%](https://tex.z-dn.net/?f=Y%3D%5Cfrac%7Bm_%7BAg_2S%7D%5E%7Bactual%7D%7D%7Bm_%7BAg_2S%7D%5E%7Btheoretical%7D%7D%2A100%5C%25%20%3D%5Cfrac%7B2.86g%7D%7B3.11g%7D%20%2A100%5C%25%5C%5C%5C%5CY%3D91.0%25)
Hence, answer is D. 91.0%.
Best regards.
Answer:
9.55 grams of SiO2
Explanation:
If the mass you mean by grams:
0.159 mole x 60.08 g (Periodic table by adding both elements)
Cancel moles with moles (Original moles with the 1 mol at the bottom of the grams) and gives you:
9.55 grams of SiO2
Answer:
Light receptors within the eye transmit messages to the brain, which produces the familiar sensations of color. The surface of an object reflects some colors and absorbs all the others. We perceive only the reflected colors.
Explanation:
go.ogle :)
Answer and explanation;
Coal has aromatic hydrocarbons with high molar mass and has a high ratio of carbon to hydrogen. Burning coal produces more soot than burning other fossil fuels does because of it.
Fossil fuel mixtures of hydrocarbons that formed from the remains of plants or animals. Burning fossil fuels increases the amount of carbon dioxide in the atmosphere. This increase may affect temperatures, amounts of rain and sea levels worldwide. Some sulfur and nitrogen are in fossil fuels, and air contains nitrogen.