height; age; sex Results Table 2: Average Breathing Rates and Lung Volumes Breathing Rate 12.2 10.8 10.4 11.1 TV(L) 0.5 0.5 0.5 0.5 Resting Values ERV(L) IRV(L) 1.4 1.3 1.4 1.4 2.3 2.2 2.3 2.3 RV(L) 26.6 29.5 26.1 27.4 Breathing Rate 1.7 1.7 1.8 1.7 TV(L) 0.6 0.7 0.7 0.7 Exercising Values ERV(L) IRV(L) 1.9 1.7 2 1.9 1.6 1.6 1.6 1.6 RV(L) 1.6 1.6 1.6 1.6 Subject1 Subject2 Subject3 Averages Comparison of Resting and Exercising Lung Volumes and Breathing Rate 1. Does exercise increase, decrease, or does not change breathing rate? Exercise increases the breathing rate. 2. Does exercise increase, decrease, or does not change TV?
A) How many mosm solute will 1 gram of NaCl yield? Show your calculations. (1gNaCl/1)*(1000mg/1gNaCl)(2/58mg)=34.5mOsm. 3. Mixed Solutions: If 1 mmole of glucose (180mg=1mOsm) and 1 mmole of NaCl (58mg=2mmOsm) are put into a beaker and distilled water added to make 1 liter, the osmolarity is 3 mOSm/L.
0.05mol/6M=8.3*10-3 L=8.3mL stock solution c. 100mL-8.3mL=91.7mLwater Add 91.7 water to 6M stock solution to prepare 0.5M acetic acid. Exercise 8: a. 42.35 - 0.55 = 41.8 mL b. The moles of EDTA4- : 0.0189M*(41.8*10-3)L=7.9*10-4mol c. Zn2+(aq)+EDTA4-(aq)—Zn(EDTA)2-(aq) The ratio Zn2+ and EDTA4- is 1:1 The moles of Zn2+= the moles of EDTA4-=7.9*10-4mol d. 7.9*10-4mol*65.39g/mol=0.0517g Zn e.
Initial Concentration Chemical Mass of Graduated Cylinder (g) Mass of Sugar (g) Molar Mass (g) Moles in Graduated Cylinder Total Volume (L) Molarity (mol/L) Sugar (C12H22O11) 16.6 10 342.29 .29 .1 .29 Data Table 9. Dilution Series Dilution Volume (mL) Mass (g) Density (g/mL) Initial Concentration (M) Volume Transferred (mL) Final Concentration (M) 0 25.0 mL 25 25 0 mL 0ml 1 25.0 mL 10 10 .29 2.5 mL 5.4M 2 25.0 mL 15 40 .435 4.5 mL 6.8M 3 25.0 mL 20 45 .58 3.0 mL 9.4M 4 25.0 mL 25 50 7.25 6.0 mL 11.2M Data Table 10. Molarity vs. Density Molarity vs. Density molarity is the concentration of a solution given in gram moles of solute per liter of solution. Density is the degree of compactness of a substance. Questions: How would you prepare 10 mL of a 0.25M HCl solution if 1M HCl was available?
Substance|Kool-Aid®: Grape|Kool-Aid®: Strawberry|Solvent| Distance (mm)| 19mm(red)|28mm(red)|48mm| Distance (mm)| 47mm(blue)||48mm| Rf|0.39 & 0.98|0.58|1| Table 3. Substance|Store Red|Store Yellow|Store Green|Store Blue|Solvent| Distance (mm)|33mm|30mm|34mm(yellow)|50mm|50mm| Distance (mm)|||50mm(blue)||50mm| Rf|0.66|0.60|0.68 & 1|1|1| Table 4. Substance|M&MBrown|M&M Yellow|M&MBlue|M&MRed|Solvent| Distance (mm)|20mm|25mm|5mm|13mm|50mm| Rf|0.40|0.50|0.10|0.26|1| A. The FD&C color(s) making up the unknown = Red and Blue. B.
29.4 atm B. 4.89 atm C. 25.1 atm D. 36.0 atm _____ 5. The vapor pressure of pure ethanol at 60 °C is 349 mm Hg. Calculate the vapor pressure at 60 °C of a solution prepared by dissolving 10.0 mol of naphthalene (nonvolatile) in 90.0 mol of ethanol. A.
b) Calculate the enthalpy of combustion per gram of each sugar. C6H12O6 + 6O2 --> 6CO2 + 6H2O (-383.5 x 6 + -285.8 x 6) - (-1273) = -2742.8kJ C12H22O11 + 12O2 --> 12CO2 + 11H2O (-383.5x12 + -285.8x11) - (-2221) = -5524.8kJ -2742.8kJ / 180g/mole = -15.24kJ/g -5524.8kJ / 342g/mole = -16.14kJ/g 107. Three common hydrocarbons that contain four carbons are listed here, along wiht their standard enthalpies of formation: Formula Delta H in kJ per mol 1,3-Butadiene C4H6(g) 111.9 1-Butene C4H8(g) 1.2 n-Butane C4H10(g) -124.7 a. For each of these substances, calculate the molar enthalpy of combustion to CO2(g) and H2O(l). b.
AS substrates are initially added, the activity is higher and then it reaches a plateau with increase. NO. Sucrase activity reached a plateau. Correct Predictions: Optimal temperature: 40 °C (104 °F), Sucrase activity increases with increasing sucrose concentration until a plateau is reached. Incorrect predictions: Sucrase will have highest activity at ph 6 not ph 7 Warm up exercise increases body temperature making it ideal for enzyme activity Increasing myosin activity makes muscles tougher and stiff and limits free movement for performance.
High-fructose corn syrup metabolizes to fat in the human body much faster than other sugars, resulting in increased fat gain. Since the fructose is consumed in liquid form, the negative effects on human metabolism are even greater (Barrett). High fructose corn syrup is not digested by the body as easily as natural sugar is. It takes the human body one day to digest natural sugar, while it takes up to four days to digest a serving of high fructose corn syrup. This means that your body is continuously working to digest high fructose corn syrup if the body consumes processed foods or drink soda on a regular basis.
We waited 5 minutes for the respirometers to equilibrate after we measured the yeast solution in the graduated cylinder. I found that giving the conclusive data by recording the amount of milliliters in the pipette left after the 5 minutes were up. We had three trials all with 2.5% , 5% , 7.5% , and 10% solution. Limitations of Experimental Design Some possible reasons for error is the percentage of sucrose we contained in each trial of the experiment. This would affect the volume of gas captured in the pipette.