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- (a) Palladium (Pd) is an element with properties similar to those of platinum. It is useful in eliminating harmful emission produce by internal combustion engines. Two students were given identical cylindrical “palladium” bars with the following data: Mass = 96.03 g; Length = 10.7 cm; Diameter = 9.82 mm; Density = 12.02 gcm-3 Show the calculations that Student K and S would do if: Student K was asked to determine whether his bar was made of pure palladium. Student S was asked to calculate the grams of ethyl alcohol (d = 0.789 gcm-3) his bar would displace.a Assume that mitochondria are cylinders 8.00 um in length and 0.800 pm in diameter. What is the volume of a single mitochondrion? The volume of a cylinder is given by the expression: V = n x y2 x h Volume= mChrome File Edit View History Bookmarks People Tab Window Help * 30% (4) Sat 2:00 PM Q OE o Chem101 O General Chemistry I (LAB SCI) X + i app.101edu.co EApps MM Gmail YouTube 9 Maps A Translate https://www.carth. 9 Google Chrome isn't your default browser Set as default Question 7 of 7 Submit Using the equations 2 Sr(s) + O2 (g) → 2 Sro (s) AH° = -1184 kJ/mol CO2 (g) → C (s) + O2 (g) AH° = 394 kJ/mol kJ/mol Determine the enthalpy for the reaction C(s) + 2 SrO(s) → CO2 (g) + 2 Sr(s). 1 2 6 C 03.0 Se VHFORMA The MO -Standa 8 AH ma +/- x 100 8T國山電@ O etv Oct 24 MacBook Air 80 888 SC FS F6 F3 F2 %23 2$ & delete 3 5 8. W E R Y U H J к K ret F V M 4-
- 1. Given the data below: CH, (g)+2O, (g) à CO, (g)+2H,O (I) CH, (g) + H₂(g) à CH, (g) 2 H, (g) + O₂(g) à 2 H₂O (1) 2C_H_ (g)+7O, (g)à4 CO,(g)+6H_O(I) Calculate the DHⓇ for the reaction 2 CH₂ (g) à CH (g) + H₂ (g) DH = -890.3 kJ DH = -136.3 kJ DH = -571.6 kJ DH = -3120.8 kJComplete the following nuclear equations. Write the mass number, atomic number, and symbol for the remaining nuclide. (Enter your answer in the form X. Enter He for an alpha particle, 18 for a beta particle, y for a gamma particle, 8 for a positron, n for a neutron, and p for a proton.)45. | You find that if you hang a 1.25 kg weight from a vertical spring, it stretches 3.75 cm. (a) What is the force constant of this spring in N/m? (b) How much mass should you hang from the spring so it will stretch by 8.13 cm from its original, unstretched length?
- Q. 1) Complete and balanced the following chemical equations. ASsume complete reaction and indicate physical states. (а) NH2OH (aq) + H2SeO4 (aq) → (b) 2 N2 (g) + 5_ 02 (g) → 2 (g) + 2 H2O (1)|→ (c) (CH3):ССH(CO-H)2 (s) + O2 (g) → (d) НЗASO4 (aq) + Sr(OH)2 (aq) →a.) Image 1 b.) Image 2BaCl2(aq)+H3PO4(aq) --> Ba3(PO4)2(s) + HCl(aq) Express you answers as inetergers seperated by commas