Page 1 of 1 Chem 143 Specific Heat Capacity Lab Report. 4.) Calculate the change in temperature of the metal shot, A ATwer- ATtea= Tana-Tatia= (A6, B6, C6)–(A5, B5, C5). A6=272 Blo=24.4 co= 23.5 ATmeal (trial 1)= (A9) ATmea (trial 2)= (B9) A5=98.2 65=100 3 C5ニ100.7 ATsa (trial 3)= (C9) 5.) Now calculate the specific heat of your unknown metal using equation 4. Note the negative sign in Equation 4! Your specific heat capacity must be positive! 9water mmetal ATmetal A8 = 985.46J B8 = 103417j A2=B6.301 (Equation 4) Smetal = Here q.ater = (A8, B8, C8), mmstal = (A2), and ATmtal=(A9, B9, C9). Smuta(trial 1) = (A10) Smetal(trial 2) = (B10) Snta(trial 3) = (C10) 3 of 4

Page 1 of 1 Chem 143 Specific Heat Capacity Lab Report. 4.) Calculate the change in temperature of the metal shot, A ATwer- ATtea= Tana-Tatia= (A6, B6, C6)–(A5, B5, C5). A6=272 Blo=24.4 co= 23.5 ATmeal (trial 1)= (A9) ATmea (trial 2)= (B9) A5=98.2 65=100 3 C5ニ100.7 ATsa (trial 3)= (C9) 5.) Now calculate the specific heat of your unknown metal using equation 4. Note the negative sign in Equation 4! Your specific heat capacity must be positive! 9water mmetal ATmetal A8 = 985.46J B8 = 103417j A2=B6.301 (Equation 4) Smetal = Here q.ater = (A8, B8, C8), mmstal = (A2), and ATmtal=(A9, B9, C9). Smuta(trial 1) = (A10) Smetal(trial 2) = (B10) Snta(trial 3) = (C10) 3 of 4

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

V C Item 14 # Part A 3 Calculate the enthalpy change for the reaction P.Os() +202 (9) P.Om()) given the following enthalpies of reaction P()+30: (9) P.O.(a) AH--1640.1kJ Pa(e)+50₂ (9)→ P400(a) AH-2940.1kJ IVE ΑΣΦΑ AH- Submit Provide Feedback E D Previous Anas Beaut Incorrect; Try Again; 5 attempts remaining $ 4 > R F % 5 T 6 G KJ C Y & 7 H . 00 8
The following figure represents the result of a calorimetry experimentexploratory scanning (DSC) conducted with a polyethylene sampleterephthalate (PET). The experiment consists of heating at a constant rate(first heat) followed by cooling (cool), also at a constant rate.Identify, in each of the curves, the nature of each thermal event (fusion,Tg, ...).
A solution is prepared by dissolving 3.38grams of acetone C3H6O in water to produce 1.27 Liters of solution. What is the molarity of the resulting solution?
_engine.html?ClassID=1087757335# Calculate the standard enthalpy of formation, AHf, of liquid N2H4. AH combNH3 ΔΗ = -71.5 kJ/mol NH3 = -46.0 kJ/mol %3D f NH3 AHiH,o = -285.8 kJ/mol 2NH3(g) + O2(g) %3D → N2H4(1) + H2O(1) AH; = [ ? ] kJ/mol Enter either a + or - sign and the magnitude. Hint: How many moles NH3 are reacting vs the AH units? AHf° (kJ/mol) Enter
5.0 g of brass (Cp = 0.38 J/g-oC, initially at 68oC) and 3.5 g of aluminum (Cp = 0.9 J/g-oC, initially at 83oC) are dropped into 20 g of water (Cp = 4.184 J/g-oC, initially at 23oC). Based on the described system, which of the following statements is/are correct? Check all that apply. Brass will release heat. Aluminum will release heat. Water will absorb heat. Air will absorb heat.
Program is informing me that my answer of-458992.14 is not to the correct amount of significant figures.
4) NaCl (20.0 g) and AgNO3 (20.0 g) are dissolved in water and allowed to react (Reaction 2). I just need help with parts (d-f). PLease help me, question shown in photo Include phase labels where appropriate and balance all equations. I also included the work I've already done for context! (Molar masses (grams/mole): Na = 23.0; Cl = 35.5; Ag = 107.9; N = 14.0; O = 16.0) ????(??) + ????ଷ (??) → ? + ? R
Calculate the value of Ecell for the following reaction: 2Au(s) + 3Ca2 (aq) –- 2AU³"(aq) + 3Ca(s) Multiple Choice 1.37 V -116 V -1.37 V 4.37 V -4.37 V
02:21 4G File Details 4CH003/UM1: Fundamentals of... Place a thermometer into the mixture and cool the flask in a water bath until the temperature is below 200C. Remove the flask from the water bath and carefully add cyclohexanol (10ml, 9.6g) to the acid mixture. Cyclohexanol is only slightly soluble in water so you should observe two immiscible layers at this point. Dissolve sodium dichromate dihydrate (10.5g) in water (5ml) in a 25ml conical flask and, using a dropping pipette, add this solution carefully drop by drop to the cyclohexanol/sulphuric acid mixture over about 30-40minutes. Swirl the flask vigorously during the addition process and maintain the temperature of the mixture in the round bottomed flask between 25-35°C during the addition by immersion of the flask in the cold water bath. If the dichromate solution is not added slowly, a rapid rise in temperature will occur and the reaction will become violent. 3 When all the dichromate solution has been carefully added rinse…
Total Suspended Solids Dried at 105°C Table 2.2: Preparing clean and dry filter paper: Finalized filter paper weight (g) Filtrating the water sample: Empty dish + Clean filter paper weight (g) Sample volume (mL) Empty dish + filter paper with dried residue weight (g) Total suspended Solids (mg Total Suspended Solids /L) (Round to zero decimal point) Set 1 0.2458 Set 1 37.8186 10 38.0628 24420 Average (Round to zero decimal point) Precision check (Round to four decimal point) Use the formula below to find the precision check Set 2 0.2458 Set 2 37.8186 10 38.0628 24420 24420 Precision: Check precision whether agree within 5% of their sum using following equation: [](1st sample result – 2nd sample result) | / sum of 1st and 2nd sample] x 100 < 5
QUESTION 15 What is the best polarity description of the ammonium ion considering only the bonds and atoms, but NOT considering the charge? O The bonds are nonpolar, but the molecule is polar, if the chagre is not considered. O The bonds are polar and the bond polarities add together making the molecule POLAR, if the chagre is not considered. O The bonds are not polar so the molecule is NON POLAR, if the chagre is not considered. O The bonds are polar, but the bond polarities cancel to give a NONPOLAR structure if the chagre is not considered. QUESTION 16 For the carbonate ion, provide the Formula, VE. Count, Geometry Name, and Number of Resonance Structures. CO22- 18, linear, 2 res. strs. co32 24, trigonal, 3 res strs. CO3, 24, trigonal pyramidal, 3 res. strs. O co2 12, linear, 1 res. str. QUESTION 17 For the phosphorus trifluoride, provide the Formula, V. E. Count, Geometry Name, Bond Polarity and Molecule Polarity. O PF3, 26, trigonal, polar bonds and polar molecule O PF3, 24,…
00 P and Hei 3. Considering the techniques and instrumentation used to perform these experiments, identify 2 potential sources of error if you were to repeat this experiment in the "real world". Human error is not an acceptable answer. Discuss at least two possible sources of error that could contribute to your percent error. 4. A student is performing Reaction 2 and does not completely dissolve the NaOH pellets before acquiring the final temperature. How will this affect his value for AH, and his percent error calculations?