Worksheet 2 Answers Chemsheets — Calorimetry

Since Chemsheets worksheets vary slightly by edition (e.g., GCSE, A-Level), this write-up assumes standard A-Level / Advanced Higher calorimetry problems involving:

If you’ve just finished Chemsheets Calorimetry Worksheet 2 and want to check your work—or you’re completely stuck and need a nudge in the right direction—you’re in the right place. calorimetry worksheet 2 answers chemsheets

Heat change of solution/reaction: [ q = m \cdot c \cdot \Delta T ] ( q ) = heat energy (J) ( m ) = mass of solution (g) – assume 1 g/cm³ for dilute aq. solutions ( c ) = specific heat capacity (usually 4.18 J g⁻¹ K⁻¹ for water) ( \Delta T ) = temperature change (K or °C – same magnitude) Since Chemsheets worksheets vary slightly by edition (e

• (n) is the number of moles of the substance.

Step 1 – Heat absorbed by water
[ q = 200 \times 4.18 \times (37.8 - 19.2) ] [ q = 200 \times 4.18 \times 18.6 ] [ q = 15549.6 \ \textJ \approx 15.55 \ \textkJ ] (n) is the number of moles of the substance

For metal: ( m = 50.0 , g ), ( \Delta T = 23.5 - 100.0 = -76.5°C )

): The unique "thermal personality" of the substance (usually water's reliable ). Change in Temperature ( ΔTcap delta cap T ): The physical evidence of the energy's movement. When we multiply these together, we get