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In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the mass of our sun that occupy less space than our moon. Suppose that one of these black holes has a mass of 1 × 103 suns and a radius equal to one-half the radius of our moon. What is the density of the black hole in g/cm3? The radius of our sun is 7.0 × 105 km, and it has an average density of 1.4 ×103 kg/m3. The diameter of the moon is 2.16 × 103 miles.
Temperature rises. Suppose a mercury thermometer contains 3.380 g of mercury and has a capillary that is 0.200 mm in diameter. How far does the mercury rise in the capillary when the temperature changes from 0.0 0C to 25.0 0C? The density of mercury at these temperatures is 13.596 g/cm3 and 13.534 g/cm3, respectively.
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Chapter 2 Solutions
EBK CHEMISTRY
- Q1: Curved Arrows, Bronsted Acids & Bases, Lewis Acids & Bases Considering the following reactions: a) Predict the products to complete the reactions. b) Use curved electron-pushing arrows to show the mechanism for the reaction in the forward direction. Redraw some of the compounds to explicitly illustrate all bonds that are broken and all bonds that are formed. c) Label Bronsted acids and bases in the left side of the reactions. Label conjugate acids and bases in the right side of the reactions. d) Label Lewis acids and bases, nucleophiles and electrophiles in the left side of the reactions. A. + OH CH30: OH B. + HBr C. H₂SO4 D. CF 3. CH 3 + HCI N H fluoxetine antidepressant 1↓ JDownloadarrow_forwardDon't used Ai solutionarrow_forwardPart 3: AHm,system Mass of 1.00 M HCI Vol. of 1.00 M HCI Mass of NaOH(s) Total Mass in Calorimeter Mole product if HCI limiting reactant Trial 1 62.4009 1.511g Mole product if NaOH limiting reactant Limiting reactant Initial Temperature Final Temperature 23.8°C 37.6°C Change in Temperature AHm,system (calculated) Average AHm,system (calculated) (calculated) (calculated) Trial 2 64.006g 1.9599 (calculated) (calculated) (calculated) (calculated) (calculated) (calculated) 24.7°C 41.9°C (calculated) (calculated) (2 pts. each)arrow_forward
- 1.) Using the graph below (including the line equation of y = -1.823x - 0.0162) What is the numerical value for the slope shown? 2.) What are the Unit(s) associated with the slope of the line shown? for we all remember that numerical data always has units. 3.) What would be a good title for this graph and explain your choice. 0.00 0.0 02 0.4 10.6 08 10 12 -0.20 -0.40 -0.60 -0.80 Temp, freezing, in degrees Celcius 5-1.00 -1.20 -1.40 -1:60 y=-1.823x-0.0162 -180 -2.00 Concentration of Sucrose (m)arrow_forwardDon't used Ai solutionarrow_forwardIdentify the Functional Groups (FG) in the following molecules. Classify C atoms as tertiary, 30, or quaternary 40. Identify secondary 20 and tertiary, 30 hydrogen atoms. Please provide steps to undertand each labeling. Please label in the image, so it fits explanation. I am still very unsure I undertand this.arrow_forward
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