Environment is all that surrounds us, which includes both living and non-living things.

Explain how two identified hazards can affect the health of the Alex residents. (2 Marks)

Place the following substances in order of increasing boiling point.He​Br2F2

Calculate the amount of heat required to vaporize 80.5 g of acetone (MW = 58.08 g/mol) at its boiling point (△ Hvap = 26.1 kJ/mol at 56.0°C).

Which molecule would be most soluble in water?

A 0.82 m aqueous solution of an unknown ionic compound has a freezing point of -3.1 oC. Based on the calculated experimental van’t Hoff factor, i, what could be the identity of the unknown compound? The Kf of water is 1.86 oC/m.

Consider the phase diagram below. If the substanced is initially at 25 degrees and 0.006 atm, would a phase change occur if the pressure was increased to 1 atm at constant temperature? If so, what phase change?

Choose the correct in-text citation for-? A quotation from page 105 of the book “Student Achievement through Staff Development” by Bruce Joyce and Beverly Showers, published in 1998 by Longman Publishers. 

Living organisms that capture sunlight using photosynthesis can also serve as energy sources.

The overall process of photosynthesis can be divided into 5 stages connected by energy-carrying and electron-carrying molecules.