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Chemistry TO GET FULL CREDIT IN CALCULATIONS: Each problem is usually worth 4 points, 1 point for each step Step 1: write the equation On a page of problems, you can write the equation once at the top of the page and get one point for each problem. For example: q = m ΔT Cp Step 2: list the variables For example: q = ? in J and kJ m = 100.0 g ΔT = 85.0-25.0 = 55.0 ˚C Cp = 4.184 J/g˚C Step 3: plug in the numbers For example: q = (100.0) (55.0) (4.184) Step 4: write the answer To get this point, the answer must be rounded to the appropriate sig figs and include the units For example: q = 2.30 x 103 J = 23.0 kJ