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A gas sample has a volume of 5.0 L, a pressure of 2.0 atm, and a temperature of 25°C. How many moles of gas are present? R = 0.0821 L atm/mol K?

How much heat is required to raise the temperature of 200 g of water from 25°C to 50°C? The specific heat capacity of water is 4.184 J/g°C?

Given the following reaction and enthalpy values, calculate the enthalpy change for the reaction CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l) ΔH°f [CH₄(g)] = -74.8 kJ/mol ΔH°f [O₂(g)] = 0 kJ/mol ΔH°f [CO₂(g)] = -393.5 kJ/mol ΔH°f [H₂O(l)] = -285.8 kJ/mol?

Given the following reaction and enthalpy values, calculate the enthalpy change for the reaction N₂(g) + 3H₂(g) → 2NH₃(g) ΔH°f [N₂(g)] = 0 kJ/mol ΔH°f [H₂(g)] = 0 kJ/mol ΔH°f [NH₃(g)] = -46.1 kJ/mol?

A gas has a volume of 3.0 L at a pressure of 1.5 atm. What will the pressure be if the volume is decreased to 2.0 L at constant temperature?

The figure below is the power curve during a squat. The size of the area indicated by the arrow indicates:

A high jumper completing a jump. Between the take off and the time she reaches the peak height, what happens to the total mechanical energy of the jumper’s body?

Which of the following types of mechanical energy is affected by the object’s velocity?

Find a point that is equidistant to the points (8, 1), (2, 1), and (5, 4).   Click ‘True’ when finished.

What are some advantages of an organism producing coagulase?