(4) The normal melting point of gold is 1064.5 °C and its boiling point is 2660 °C. (a) Convert these two values to the Fahrenheit and Kelvin scales. (b) Find the difference between those two values in Celsius. (c) Repeat (b) using the Kelvin scale.
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- Below is a Beer's Law Plot for the concentration of a specific colored compound x. A solution of compound X is measured with the spectrophotometer to have an optical density of 0.60. a) What is the concentration of compound X in this solution. Answers must contain proper units for full credit. b) The absorbance of this compound was measured at 540 nm. Why was this absorbance chosen? 0.9 0.8 0.7 0.6 805 4 0.4 0.3 0.2 Absorbance at 540 mA slice of pizza has 500 kcal. If we could burn the pizza and useall the heat to warm a 50-L container of cold water, what wouldbe the approximate increase in the temperature of the water?(Note: A liter of cold water weighs about 1 kg.)(A) 50°C (B) 5°C(C) 100°C (D) 10°Cserature rennelt and Ke (3) A Celsius thermometer indicates a temperature of -40°C. (a) What Fahrenheit and Kelvin temperatures correspond to this Celsius temperature? (b) If the temperature changes from -40 °C to +10°C, find the change in temperature on the Fahrenheit scale.
- (I) Why the physicochemical changes in liquid water caused by radiation is the key to understanding the biological effects of radiation? Please give a short, one-sentence explanation. (II) Name the three key stages of the physicochemical changes produced in liquid water due to radiation. (III) Briefly describe the three key stages. A one- or two-sentence explanation for each of the three key stages would be sufficient.Notice that the difference between the freezing and boiling point of water is 180 degrees in the TEMPERATURE (°C) symbol (*), followed immediately by either C or F (no spaces). On the Fahrenheit scale: O°F 32°F freezing point of water (equivalent to 0°C) 212°F boiling point of water (equivalent to 100°C) Fahrenheit scale (32°F....212°F) but is 100 degrees in the Celsius scale (0°C..T00 C). As with using the metric system, it is important in the sciences to learn to use and report temperature readings using the Celsius scale since it is more universally used than the Fanrenniore scale. The formulas used to convert between these two temperature scales are listed below. When converting from°F to°C °C= ('F - 32) 1.8 °C=5/9('F - 32) -OR- When converting from°C to°F °F = (°C x 1.8) + 32 °F = (°C x 9/5) + 32 -OR- Use the above equations (either the decimal or fraction form) to complete the following conversions. Space is provided should you wish to write out your work. Place your answer (and…Assume that the mixture of substances in drawing (a) undergoes a reaction. Which of the drawings (b)–(d) represent a product mixture consistent with the law of conservation of mass?
- (a) A blackish brown solid ‘A’ when forced with alkali metal hydroxide in presence of air, produces a dark green coloured compound ‘B’, which on electrolytic oxidation in alkaline medium gives a dark purple coloured compound ‘C’. Identify A, B, C and write the reactions involved. What happens when an acid solution of green coloured compound (B) is allowed to stand for some time. (b) (i) Calculate the spin magnetic moment of M2+(aq) ion. Atomic number (Z) = 27. (ii) Chromium is typical hard metal while mercury in liquid, explain.5. a) How many vibrational normal modes does HCN have? b) How many peaks (not counting the fine structure of each peak) would you expect to see in the IR spectrum of gas phase HCN?Calculate these masses.(a) What is the mass of 8.00 cm 3 of mercury, density = 13.5939 g/cm 3 ?(b) What is the mass of 45.0 mL octane, density = 0.702 g/cm 3 ?
- For ferrocene (C10H10Fe) the enthalpy of sublimation is 73.2 kJ/mol and the entropy of sublimation is 243 J/mol.K. What is the sublimation temperature of ferrocene in degrees Celsius?After her latest dialysis treatment, Michelle experienced vertigo and nausea. Michelle's doctor orders 0.044 g of chlorpromazine, which is used to treat nausea. If the stock solution is 3.4 % (m/v), how many milliliters are administered?The atomic emission spectrum for a particular element includes blue-violet light with wavelength 440. nm. Calculate the energy in joules of this light given that E = h c/A, and h = 6.63 x 10-34Js, and c = 3.00 x 10°m/s. (h andc are constants, A is wavelength, convert nm into m) h c E =