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How much heat does the air exchange with its surroundings during the process abc? ( in millijoules)
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- The density of bubble gum is about 1g/cm3. You blow an 8g wad of gum into a bubble 9cm in diameter. What is the thickness of the bubble? Use the equation: 4πr2 to help solve the problem.Find the number of significant figures in each of the following. (a) 61.8 ± 0.3 (b) 3.86 ✕ 109 (c) 2.80000 ✕ 10−6 (d) 0.0045One 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)?
- A = (6.00i – 8.00j) units, 37. QC (a) (-8.00i + 3.00j) units, and C= (26.0i + 19.0j) units, determine a and b such that aA + bB + Ć = 0. (b) A stu- dent has learned that a single equation cannot be solved to determine values for more than one unknown in it. How you explain to him that both a and b can be deter- mined from the single equation used in part (a)? Taking wouldThe ideal gas law states that a gas’s pressure ?([kg]/[m][s]^2) depends upon its volume ? ([m]^3), amount of substance ? ([mol]), temperature ? ([K]), and the ideal gas constant ?. If the fundamental dimensions of ? is given by,?: [kg] [m]^2 [K]^−1 [mol]^−1 [s]^−2 obtain the ideal gas law by performing dimensional analysis. Properly define variables usedOne cm3 of gold is 19.32 g. What is the density (ratio of mass to volume) of gold inkg per m3 ? I know the answer is 19.32x10^3 but can someone tell me the steps to get there?
- How many significant figures are in each of these measurements? 0005 m, 71 ✕ 105 g,The density of air under ordinary conditions at 25 °C is 1.19 g/L. How many kilograms of air are in a room that measures 13.0 ft x 12.0 ft and has a 9.0 ft celing?The ideal gas law states that a gas’s pressure P([kg]/[m][s]^2) depends upon its volume V ([m]^3), amount of substance n ([mol]), temperature T ([K]), and the ideal gas constant R. If the fundamental dimensions of ? is given by,R: [kg] [m]^2 [K]^−1 [mol]^−1 [s]^−2 obtain the ideal gas law by performing dimensional analysis. Properly define variables used
- Q 2: a- If you had 0.2 kg of helium, how many helium atoms would you have? b- If you had 10 dozen helium atoms, what would be their mass? c- What is the mass of one helium atom? d- What is the mass of 2.0 moles of helium atoms?The density of platinum is 21.45 x 103 kg/m3. a. Calculate the volume (in m3/atom) occupied per platinum atom b. Estimate the atomic diameter (in m);(The estimate uses the approximation that it is a cubic volume) c. Using this estimation, calculate the thickness of a metal foil (in m) containing 2.0 x 101 atomic layers of platinum.0²T მე2 ƏT B- Ət You know that T is temperature (K) and x is the x-coordinate, which is measured in meters. You also know that t is time (s) and the book uses à as the symbol for thermal conductivity, whose unit is W/m.K. What must be the units of Q and ß?