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- One mole of silicon (6x1023 atoms) has a mass of 28 grams, as shown in the periodic table on the inside front cover of the textbook. The density of silicon is 2.4 grams/cm³. What is the approximate diameter of a silicon atom (length of a bond) in a solid block of the material? Make the simplifying assumption that the atoms are arranged in a "cubic" array, as shown in the figure. Remember to convert to SI units. d =One mole of Gold (Au) atom has a mass of 197 g. We know that the density of gold is 19.30 g/cm3 in room temperature. Using those numbers, answer the following questions: a) What is the mass of a single gold atom in kg? b) Assume that gold atoms sit in a perfect cubic crystal structure. Estimate the distance between two gold atoms in meters. c) If we have a gold cube of 6 cm on each side, how many atoms can we fit along the edge of each side of the cube? d) What would be the mass, in kilograms, of the gold cube we discussed in part (c) (measuring 6 cm on each side)?This was wrong. Can you solve this again with these numbers? What is the root mean square velocity, vrms, for Hydrogen molecules (H2) at 20oC? Hint: How many amu does an H2 molecule contain. 1 amu = 1.67 x 10-27 kg Boltzman's Constant, k = 1.38 x 10-23 J/K Give your answer in m/s to 4 significant figures (NO DECIMALS)
- At what temperatures will the air have a volume of 165.0 ml and 75 ml respectively? I have included a picture of the temperatures and volumes from my experiment. We also had to create a graph of volume in ml (y-axis) versus the temperature in K (x-axis). We are to include the slope and intercept and upload the graph. Could you help me? I'm not sure if my graph is correct or not. Thank you!Calculate the average density of the following astronomical body: Jupiter. Where does the value fit among those listed in the table below? Look up the density of a typical rock, such as granite in another source and compare the density of Jupiter to it. Table: Densities of Some Common Substances at Standard Temperature (0°C) and Pressure (Atmospheric) Substance ρ (kg/m3) Substance ρ (kg/m3) Air 1.29 Ice 0.917 ✕ 103 Aluminum 2.70 ✕ 103 Iron 7.86 ✕ 103 Benzene 0.879 ✕ 103 Lead 11.3 ✕ 103 Copper 8.92 ✕ 103 Mercury 13.6 ✕ 103 Ethyl Alcohol 0.806 ✕ 103 Oak 0.710 ✕ 103 Fresh Water 1.00 ✕ 103 Oxygen gas 1.43 Glycerin 1.26 ✕ 103 Pine 0.373 ✕ 103 Gold 19.3 ✕ 103 Platinum 21.4 ✕ 103 Helium gas 1.79 ✕ 10−1 Sea Water 1.03 ✕ 103 Hydrogen gas 8.99 ✕ 10−2 Silver 10.5 ✕ 103A student collects a series of six groundwater samples from a well. She measures the dissolved oxygen concentration in six of these. Her observations in mg/L are: 8.8, 7.1, 7.2, 8.2, 7.6, 8.6. Plot a graph based on the given values above. Find the mean of the different samples collected and Find the variance. Kindly encode your answers and complete solutions. Thank you!
- Eleven molecules have speeds 16, 17, 18, 19,20,21,22,23,24,25, 26 m/s. Calculate the root-mean-square of this group of molecules. in meters per second. Please give your answer with one decimal place.A cylinder containing 246 cubic centimeter of gas at a pressure of 101 kPa when its temperature is 526 K. Given that its temperature is unchanged when the pressure was increased by a factor of 3.9, Determine the new volume of the gas (In cubic centimeter). Note: Your answer must be in cubic centimeter, however, do not include the unit, just enter the magnitude that corresponds to the final volume in cubic centimeter. Round your answer to 2 decimal points Round your answer to 2 decimal points Answer:A cylinder containing 100.9 cubic centimeter of gas at a pressure of 376 kPa when its temperature is 534 K. Given that its temperature is unchanged when the pressure was increased by a factor of 5.9, Determine the new volume of the gas (In cubic centimeter). Note: Your answer must be in cubic centimeter, however, do not include the unit, just enter the magnitude that corresponds to the final volume in cubic centimeter. Round your answer to 2 decimal points Round your answer to 2 decimal points
- You are modeling the concentration of a drug in a person's blood after they take one pill. We assume that after they take the pill the drug enters their blood effectively instantaneously. The drug has first order elimination kinetics. Complete parts (a) and (b). (a) Explain why the concentration of drug in their blood satisfies a differential equation = - k, c with c(0) = cn. Choose the correct answer below. O A. The differential equation for a drug with first order elimination kinetics is = A(t) - ko. As the drug enters the blood effectively instantaneously. There is no further absorption dc dc = - ko. dt after time t= 0, so A(t) = 0. Thus, О в. The differential equation for a drug with first order elimination kinetics is = A(t) - k, c. As the drug enters the blood effectively instantaneously. There is no further absorption dc after time t=0, so A(t) = 0. Thus = -k,c. dt Oc. The differential equation for a drug with first order elimination kinetics is = A(t) - ko. As the drug enters…Scientists are studying the temperature on a distant planet. They find that the surface temperature at one location is 25° Celsius. They also find that the temperature decreases by 3° Celsius for each kilometer you go up from the surface. Let T represent the temperature (in Celsius), and let H be the height above the surface (in kilometers). Write an equation relating T to H, and then graph your equation using the axes below. * T axis (y) goes up to 30 (counting by 5's) * H axis(x) goes up to 8 (counting by 1's) **Be sure to write out the points tooPROBLEMS 1.1. In the table below, a number in the top row represents the pressure of a gas in the bulb of a constant-volume gas thermometer (corrected for dead space, thermal expansion of bulb, etc.) when the bulb is immersed in a water triple-point cell. The bottom row represents the corresponding readings of pressure when the bulb is surrounded by a material at a constant unknown temperature. Calculate the ideal- gas temperature T of this material. (Use five significant figures.) PTP, kPa P, kPa 133.32 99.992 33.331 66.661 102.37 204.69 153.54 51.190
