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卡片总数: 2 张•内容版本: v4•公开卡包•更新时间: 8/1/2026
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#1
正面 (问题)
What is the formula for determining change in thermal energy?
背面 (解答)
Q = mcΔt where: m = mass (g) c = heat capacity (J/g‧˚C) Δt = change in temperature (˚C)
#2
正面 (问题)
What is the formula for calculation enthalpy changes?
背面 (解答)
Molar enthalpy, in kJ/mol, and the number of moles of a substance can be used to calculate the enthalpy change of a chemical change: ΔᵣH = nᵣH ΔᵣH = enthalpy changes in kJ (or J) n = number of moles in mol ᵣH = molar enthalpy in kJ/mol or J/mol the number of moles can either come from the balancing in the chemical reaction of from the formula n=m/M always have a sign on ΔH (or H) positive for endothermic (energy absorbed) negative for exothermic (energy released)