Math Problem Statement

show me the calculations to the earlier problem

Solution

Certainly! Let's go through the step-by-step calculations for the sum of squared errors (SSE) for both students' data.

Constants

  • R=8.3J/(K\cdotpmol)R = 8.3 \, \text{J/(K·mol)}
  • V=16.6m3/molV = 16.6 \, \text{m}^3/\text{mol}
  • n=1moln = 1 \, \text{mol}

Ideal Gas Law

P=nRTVP = \frac{nRT}{V}

Data Collected by Student A

T(K)T(K)274276278282290
P(Pa)P(Pa)137139142141142

Data Collected by Student B

T(K)T(K)276280284288290
P(Pa)P(Pa)137141142148145

Predicted Pressures Using Ideal Gas Law

For each temperature TT:

P=(1 mol)(8.3 J/(K\cdotpmol))T16.6 m3/mol=8.3T16.6=0.5TP = \frac{(1 \text{ mol}) \cdot (8.3 \text{ J/(K·mol)}) \cdot T}{16.6 \text{ m}^3/\text{mol}} = \frac{8.3T}{16.6} = 0.5T

Predicted Pressures for Student A

  • PA1=0.5×274=137P_{A1} = 0.5 \times 274 = 137
  • PA2=0.5×276=138P_{A2} = 0.5 \times 276 = 138
  • PA3=0.5×278=139P_{A3} = 0.5 \times 278 = 139
  • PA4=0.5×282=141P_{A4} = 0.5 \times 282 = 141
  • PA5=0.5×290=145P_{A5} = 0.5 \times 290 = 145

Predicted Pressures for Student B

  • PB1=0.5×276=138P_{B1} = 0.5 \times 276 = 138
  • PB2=0.5×280=140P_{B2} = 0.5 \times 280 = 140
  • PB3=0.5×284=142P_{B3} = 0.5 \times 284 = 142
  • PB4=0.5×288=144P_{B4} = 0.5 \times 288 = 144
  • PB5=0.5×290=145P_{B5} = 0.5 \times 290 = 145

Calculate SSE for Student A

\text{SSE}_A &= (137 - 137)^2 + (139 - 138)^2 + (142 - 139)^2 + (141 - 141)^2 + (142 - 145)^2 \\ &= 0 + 1 + 9 + 0 + 9 \\ &= 19 \end{aligned}$$ ### Calculate SSE for Student B $$\begin{aligned} \text{SSE}_B &= (137 - 138)^2 + (141 - 140)^2 + (142 - 142)^2 + (148 - 144)^2 + (145 - 145)^2 \\ &= 1 + 1 + 0 + 16 + 0 \\ &= 18 \end{aligned}$$ So, the SSE for Student A is 19, and for Student B, it is 18. Would you like more details or have any other questions? Here are 5 questions you can ask next: 1. Can you explain more about how to interpret SSE? 2. What if the gas constant $$R$$ was different; how would that affect the calculations? 3. Are there any other methods to measure the goodness of fit besides SSE? 4. How does temperature affect the pressure in the ideal gas law? 5. Can you provide examples of when the ideal gas law might not be accurate? Tip: Always check the units and constants used in your calculations to ensure accuracy and consistency.

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Math Problem Analysis

Mathematical Concepts

Ideal Gas Law
Linear Regression
Sum of Squared Errors (SSE)

Formulas

Ideal Gas Law: P = nRT/V
SSE: Sum of squared differences

Theorems

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Suitable Grade Level

High School