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Interpret peaks on this c13 NMR of Ethanoic Acid with cooresponding structure
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- Directions Through the given situations below, answer the following questions 1 A mixture of monosodium glutamate, white sugar, salt and benzoic acid is to be melted by a group of Grade 7 students to determine the behavior of the mother during melting Predict how the mixture will look like as it is being heated. Explain your answer SUBSTANCE Sali White sugar Monosodium glutamate Benzoic acid MELTING POINT 801 C 186 C 232 C 122 C 2. Theo wants to observe what will happen to substance X (melting point is at 78 C) after heating it on an evaporating dish. After heating for a few minutes, substance X startsWhat if the second was parts per million instead of parts per billion? Will the 10 to the exponent 6 will be the one that you will always divided by in situations like this?Is glutinous rice a pure substance or a mixture?
- A student prepared a compound. the melting point of the crude the product was 42 to 48 degree C. after purifying the solid for the first time, the melting point was 47 to 51 degree C. after another purification, the melting point was 50 to 53 degree C. at this stage, can the student confidently say the product has been completely purified? justify your answerHow in the world do I solve this equation 1/k = (7.3x10^8)x(2.0x10^-5)+(1/1.00x10^-4) solve for kA solution is made by mixing 212.0 mL of ethanol initially at 10.0 C with 212.0 mL of water initially at 22.8 C what is the final temperature of the solution assuming that no heat is lost? The density of ethanol is 0.789 G/mL snd the density of water is 1.00 g/mL the specific heat of ethanol is 2.46 J/g and the specific heat of water is 4.184 J/g C.
- 2. Soap can be made using a variety of different fats, oils and bases. Suppose a student wanted to make a soft, liquid soap that lathers easily. What type(s) of fat/oil and base would you recommend? How would this differ from making a solid bar of soap? 3. Vegetable oils are typically liquid at room temperature, yet Crisco (which is made of vegetable oil) is solid at room temperature. Explain why/how this is the case. 4. Explain, with the use of a diagram how soap molecules work to clean “dirt” particles. 5. Amylase is a natural enzyme found in saliva. Describe this enzyme’s function. 6. Lactose is a sugar found in milk and other dairy products. Explain how it is broken down in most individuals. Explain lactose “intolerance”.Classify the following mixtures homogemeous or hetermgeneous? white wine?Food contains three main categories of compounds: carbohydrate, protein, and fat. Arctic explorers often eat a high-fat diet because fats have a high food value. The average food values for carbohydrate, protein, and fat are 4 Cal/g, 4 Cal/g, and 9 Cal/g, respectively. Consider a typical fat to have the chemical formula C18H36O2, glucose (C6H12O6) to be a representative carbohydrate, and the amino acid alanine (C3H6NO2) a building block of proteins. Express the food values given above in kJ/mol.
- Petroleum itself as a mixture is very useful but the components extracted from it are not beneficial. A. True B. False4. Gasoline can be reasonably approximated as C9H20 with a density of 0.718 g/mL. Diesel can be reasonable approximated as C14H30 with a density of 0.763 g/mL. (Both gasoline and diesel are complicated mixtures. These formulas are something like weighted averages of the formulas of the different components, where the weighting is based on various quantifiable behaviors. That is, using these artificial formulas for gasoline and diesel allows one to calculate average properties that match what petroleum engineers might measure.) The enthalpy change from burning one mole of gasoline is -6160 kJ. The enthalpy change from burning one mole of diesel is -7940 kJ. Determine which fuel generates the biggest enthalpy change per gram burned, and which generates the biggest enthalpy change per mL burned.The solubility of PbCO3 in water at 25°C is measured to be 7.3x10−5g/L. Use this information to calculate Ksp for PbCO3. Round your answer to 2 significant digits.
