A reaction has a ΔH value of + 120 kJ and a ΔS value of - 42 J/K. At which of the following temperatures is the reaction spontaneous (meaning ΔG is negative) ?

Science is based on? A. Facts B. Observations C. Both facts and observations D. Neither facts nor observations

Is the reaction first order or second order with respect to the concentration of no2?

Which volume measurement is expressed in four significant figures? A) 5.50 ml B) 550. ml C) 5,500 ml D) 5,500. ml

An increase in temperature can disturb the liquid-vapor equilibrium True False

1 When a chemical reaction occurs A. the substances involved do not mix together and maintain their original properties. B. the properties of the substances that are produced are identical to the properties of the original substances. C.

It is snowing where Jenna lives. It's been snowing all day, but now the snow has changed to sleet and then to freezing rain. What is happening to cause these changes?

Liquid sample a has a higher vapor pressure than liquid sample b (both in closed containers). what can be said about sample a compared with sample b?

A neutral atom has high electronegativity. Describe what happens to this atom during ionic bond formation?

Which daughter element is produced from the beta decay of 89/36 kr

What is "change" when we are talking about natural and physical systems? A. Information that has been proven to be true B. Repeated processes that are used in a variety of ways C. A process for using knowledge and skills to acquire new knowledge D.