Use the following experimental data to help you answer the following questions. Experimental results from a high school mass lab
Name Trial 1 (9) Trial 2 (9) Trial 3 (9) Trial 4 (9)
Sophie 3.45 3.44 3.46
3.44
Esteban 2.97
3.00 2.87
3.92
Bobby 3.45 3.87
3.29
3.41
Maria 3.81 3.86 3.82
3.89
Actual Mass of Sample: 3.87 g

WHOSE DATA is the most precise? and WHOSE DATA is the most accurate???

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.