A student performing Experiment 2 measures a voltage of -0.235 mV at 0.0 °C and 1.910...
A student performing Experiment 2 measures a voltage of -0.235 mV at 0.0 °C and 1.910 at 99.423 °C. What is the value of the slope (m) in their linear calibration equation Tc = mE + b?
Enter your answer to the tenths place. Do not include units.
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A student performing Experiment 2 measures a voltage of -0.235
mV at 0.0 °C and 1.910...
need help with the calculatiobs the bottom picture is what i got performing the experiment C....
need help with the calculatiobs the bottom picture is what i
got performing the experiment
C. Concentration Cells If both cell compartments contain copper metal and copper sulfate, the standard potential is 0.000 V and the Nernst equation becomes: Ercan = 0.000 volts (com dilute) volts Prepare a new cell, which has the beaker with 40 ml of 0.10 M CuSO. (from Part B) and 40 mL 0.0010 M Cuso. (from Part B) in an adjacent second one. Place copper...
1.) A student enters the lab and performs Experiment 14 as written. In the procedure for...
1.) A student enters the lab and performs Experiment 14 as written. In the procedure for "Experiment 1" on p. 230 of the lab manual, the student records the concentration of the stock solution of H2O2 to be 0.965 M. The student proceeds to prepare the reaction solution as stated in the lab manual: They add 10.0 mL of 0.10 M potassium iodide and 15.0 mL of distilled water to their flask. They then add 5.0 mL of the stock...
The reaction N2O4(g) ⇌ 2NO2(g) has ∆G° = 13.3 kJ/mol at 25 °C. What is the...
The reaction N2O4(g) ⇌ 2NO2(g) has ∆G° = 13.3 kJ/mol at 25 °C. What is the value of ∆G, in kJ/mol, for this reaction at this temperature when [N2O4] = 3.0 M and [NO2] = 0.0010 M? Enter your answer to the tenths place. Do not include units. Include the sign if appropriate! Thank you for your help!
Question 7 2 pts In the lab, a student measures a teaspoon of an unknown liquid....
Question 7 2 pts In the lab, a student measures a teaspoon of an unknown liquid. The teaspoon of liquid has a mass of 7.80 g and a volume of 5.36 mL. How many teaspoons would be in 1.45 kg of this unknown liquid? Round your answer to the nearest whole number and do not include units in your answer.
A student prepares a caffeine standard solution that has a concentration of 1858 ppm. To prepare...
A student prepares a caffeine standard solution that has a concentration of 1858 ppm. To prepare a calibration curve, the student pipets various volumes of the standard solution into 50.0 mL volumetric flasks and dilutes to the fill line with water. The absorbance of each solution is measured in a 1.00 cm cuvette using the spectrophotometer and is shown in the table below. Calculate the concentration of each solution and create a calibration curve using the absorbance data provided. Based...
Below is the result of a student's efforts to determine the solubility product, Ksp, of strontium...
Below is the result of a student's efforts to determine the solubility product, Ksp, of strontium chromate. The concentration of Sr2+ in the reference cell is 0.00100 M. The concentration of chromate in the nonreference cell was calculated to be 0.993 M. The voltage of this nonreference cell relative to the reference was measured as -49.0 mv. The temperature is 25.0 C NOTE The voltage is recorded as negative due to the way the silver electrodes are placed in the...
A student performed an experiment using the same setup as the one used in the lab...
A student performed an experiment using the same setup as the one used in the lab "Newton's Laws." Their sample data is provided in the table below. Mass, kg Acceleration, m/s2 0.015 0.028 0.025 0.073 0.035 0.130 0.045 0.174 0.055 0.221 a. Copy this data into Graphical Analysis and use it to make an acceleration vs. net force graph. Determine the mass (in kg) of the moving system using the slope of the graph. b. Make a print screen of...
constant velocity and constant acceleration experiment pls only correct answers and clear handwriting thanks General Form...
constant velocity and constant acceleration experiment pls
only correct answers and clear handwriting thanks
General Form of Linear equation Y=mx+b m is the slope b is the y-intercept General Form of Quadratic equation y=A+BX+C A is the quadratic coefficient B is the linear coefficient C is the Constant Constant Velocity (Motorized Cart) 10 Pistol 05 Times Y=mx+b X=Vt+Xo m is the slope: m is the Velocity = 0.210 m/s (21 cm/s) b is the y-intercept: b is the initial Position...
3. A student repeated the experiment with a different compound, Biomarker X. The equation for the...
3. A student repeated the experiment with a different compound, Biomarker X. The equation for the line of best fit from their calibration curve was y = 3.612x104 X+0.0060. If the original concentration of the student's unknown sample of Biomarker X was 8.25x104 M, what is the expected percent transmittance of the diluted unknown sample? Percent Transmittance: Show Your Calculations Below: A. Concentration of Biomarker by Spectrophotometry: Concentration of Stock Biomarker Solution (M): 1.1754 10M **Note: Measure the Percent Transmittance...
5. A student carries out a calorimetry experiment using HCl and NaOH. What effect will each of th...
5. A student carries out a calorimetry experiment using HCl and NaOH. What effect will each of the following have on the calculated enthalpy of the reaction relative to the actual enthalpy of reaction? (larger, smaller or no change). Explain your reasoning a. The thermometer always registered a temperature 0.30 °C higher than the actual temperature b. The calorimeter constant used in the calculations by the student is larger than the actual value. (Hint: The best way to answer this...
need help with the calculatiobs the bottom picture is what i
got performing the experiment
C. Concentration Cells If both cell compartments contain copper metal and copper sulfate, the standard potential is 0.000 V and the Nernst equation becomes: Ercan = 0.000 volts (com dilute) volts Prepare a new cell, which has the beaker with 40 ml of 0.10 M CuSO. (from Part B) and 40 mL 0.0010 M Cuso. (from Part B) in an adjacent second one. Place copper...
Question 7 2 pts In the lab, a student measures a teaspoon of an unknown liquid. The teaspoon of liquid has a mass of 7.80 g and a volume of 5.36 mL. How many teaspoons would be in 1.45 kg of this unknown liquid? Round your answer to the nearest whole number and do not include units in your answer.
Below is the result of a student's efforts to determine the solubility product, Ksp, of strontium chromate. The concentration of Sr2+ in the reference cell is 0.00100 M. The concentration of chromate in the nonreference cell was calculated to be 0.993 M. The voltage of this nonreference cell relative to the reference was measured as -49.0 mv. The temperature is 25.0 C NOTE The voltage is recorded as negative due to the way the silver electrodes are placed in the...
constant velocity and constant acceleration experiment pls
only correct answers and clear handwriting thanks
General Form of Linear equation Y=mx+b m is the slope b is the y-intercept General Form of Quadratic equation y=A+BX+C A is the quadratic coefficient B is the linear coefficient C is the Constant Constant Velocity (Motorized Cart) 10 Pistol 05 Times Y=mx+b X=Vt+Xo m is the slope: m is the Velocity = 0.210 m/s (21 cm/s) b is the y-intercept: b is the initial Position...
3. A student repeated the experiment with a different compound, Biomarker X. The equation for the line of best fit from their calibration curve was y = 3.612x104 X+0.0060. If the original concentration of the student's unknown sample of Biomarker X was 8.25x104 M, what is the expected percent transmittance of the diluted unknown sample? Percent Transmittance: Show Your Calculations Below: A. Concentration of Biomarker by Spectrophotometry: Concentration of Stock Biomarker Solution (M): 1.1754 10M **Note: Measure the Percent Transmittance...
5. A student carries out a calorimetry experiment using HCl and NaOH. What effect will each of the following have on the calculated enthalpy of the reaction relative to the actual enthalpy of reaction? (larger, smaller or no change). Explain your reasoning a. The thermometer always registered a temperature 0.30 °C higher than the actual temperature b. The calorimeter constant used in the calculations by the student is larger than the actual value. (Hint: The best way to answer this...
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