CHM1011 - Chemistry I - S1 2025
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Heat and Energy
Heat is given off when hydrogen gas burns in air according to the equation:
2 H2 (g) + O2 (g) → 2 H2O (g)
Which of the following is responsible for the heat?
Heat can be best described as:
State functions are inter-related and knowing any two fixes the others. In contrast, path functions are observed only as consequences of a particular process of change. From the list of options below, select the list which ONLY lists variables which are considered to be 'state functions'.
If the enthalpy of a chemical reaction has the value of ΔH = -100 kJ/mol,
When a chemical reaction is measured to give off heat, it is said to be:
From the options below, select the statement which best describes the concept of heat:
If a system does 45 J of work and receives 28 J of heat, what is the value of ΔU for this change?
Energy is measured in the units of:
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