Could you please answer the 'pre-laboratory questions' and show your work for any question you answer? here is the prelab question you have to answer:

Exp. H3: Specific Heat Introductory Material The specific heat C of a material is defined as the amount of heat energy required raise the temperature of a specified amount of that material by 10 C. We are going to determine the specific heat of a sample (not necessarily chemically pure) by observing the rise in the temperature of a container when the hot sample is added to it. Our method is simple. We will use a measurement instrument Temperature called a "calorimeter," which is really nothing more than an aluminum can in an insulating jacket. The aluminum can in the T's calorimeter has an initial temperature To. We will then take a metal sample, heat it to a temperature Ts, and drop it into the aluminum can. The aluminum can will then heat up while the sample cools down. If To Eventually they will both reach a final temperature If. If will be between To and T's, as sketched in Figure 3.1. You will measure these temperatures and use them to calculate the specific heat Cs of the Figure 3.1 metal sample. We will use the following notation: Mass Specific heat Temperature Temperature initial final sample MS Cs I's If calorimeter M Cc To If The calorimeter is made of aluminum, which has a specific heat Cc = 900 J/kgoC. Conservation of energy requires that any heat energy lost by the metal sample must go somewhere. We will assume that all of this energy is absorbed by the calorimeter. Making this assumption, we have: heat lost by sample = heat gained by calorimetered ways from the nylon rope which we can write as: Ms Cs (Ts - Tf) = Mc Cc (If- To). that the (3.1) By measuring Is, If , and To, and knowing Ms, Mc, and Cc, it is possible to calculate the unknown specific heat of the sample, Cs. Hholes isoda maz avis a fi "wodlo" odi bait of evil offorqmyze sau of misoda 60108 A ntol bris swal to vinavint anT sous england H3 -2Exp. H3: Specific Heat By assuming that all of the energy released by the hot sample is absorbed by the calorimeter, we have neglected any other loss of heat. In fact, some heat is lost by three mechanisms: radiation, conduction, and convection. These can potentially be significant sources of error. To reduce these losses, the calorimeter has the following features: the aluminum can is suspended in styrofoam, which has a low thermal conductivity the cover of the container inhibits transfer of heat to the outside air. eor soz Calorimeter, shown disassembled. Styrofoam Styrofoam Calorimeter's Calorimeter's Styrofoam cover base with jacket aluminum can aluminum lid with black plastic black plastic uon esgole orly rot esplev novin uns DOY Calorimeter, shown ar enolwe intog orly 109 .4 bas x to eouley ocuse ord svod thewy eout partly assembled WOY .x stanimils of avoce nwona anourups noiegerqxe ns ed bluode lion Inni? Figure 3.2 wor gnixviens now del ord ni fi sau Ww wod enoiledup dal-ang woy ni gained snoted H3- 3Exp. H3: Specific Heat A table of the specific heats of several materials is listed below: Specific Heat Material C (J / kg .C) Water 4184 Beryllium 1825 Wood 1400 Aluminum 900 Glass 753 Silicon 705 Stainless Steel 502 Copper 386 Brass 381 Germanium 320 Silver 235 Gold 129 Lead 129 Pre-Laboratory Questions 1. Suppose that after you measure the specific heat Cs of the brass sample, you repeated your measurements with another brass sample, of twice the mass. What result would you expect, and why? 2. Rewrite Eq. (3.1) so that it is in the form Cs = ... (Record this expression before turning in your pre-lab questions. You will use it in the lab when analyzing your data.) 3. Suppose you want to find the intersection (x, y ) of two straight lines, y = mix + b1 y = max + b2. You are given values for the slopes mi and m2, as well as for the intercepts by and b2. At the point where the lines intersect, both lines will have the same values of x and y. For this point of intersection, solve the pair of equations shown above to eliminate x. Your final result should be an expression ... where the right hand side depends only on my, m2, b1, and b2 . (Record this expression before turning in your pre-lab questions. You will use it in the lab when analyzing your data.) H3 -4Exp. H3: Specific Heat 4. Order of Magnitude Estimation: Suppose that you drank 16 oz. of an ice- cold soft drink. If your body were unable to adjust its own temperature, how much would your body temperature decrease? State which physical quantities are applicable. . . . State your assumptions clearly (Hint: what is your body mostly made of?) Write down an appropriate formula. Show your calculations and a result. Equipment List Calorimeter Temperature probe * (2) Brass Sample Computer* Hot plate Logger Pro software Insulated Glove Forceps soivab milf : 1000 mL Beaker (for ice) Unknown Metal Sample * An asterisk indicates that an item is described in the Instrument Glossary. oft no vit Safety Warnings You will use a hot plate with an exposed heater. Do not burn yourself. Do not allow combustible material to touch the hot plate. 601-08 JUG Do not allow the probe wires to touch the hot plate. mmmat the Do not heat the sample hotter than 80 C. You will use ice from a machine that has not been cleaned. bil al Do not eat the ice. bosa Bymove die ant bra see the brass sar ing Order of Magnitude Estimations are explained in the Introductory Material of Experiment M2. H3 -5