A research student used 376 mL of a sample of gas (4.114 g) in a reaction. The reaction was setup in a vacuum at 350.72 kPa and left to react at 82 °C. A colourless
liquid and an unknown orange-coloured gas were the resultant products. What
orange-coloured gas did the research student produce?
BrF
NO,
N204
B2F4
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the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".