Which is a pure substance?

air

nitrogen

apple juice

tap water

What is the volume, in mL, of 0.500M sugar (C6H12O6) solution that has 2.5 mols of dissolved sugar? 5mL 200mL 1250mL 5000mL

What makes salt an ionic compound?

What is the arrangement of water molecules in the gaseous, liquid and solid states?

What does the 'u' mean in CuO?

What is the difference between a heterogeneous and homogeneous mixture? A. A heterogeneous can only be solid, and a homogeneous can only be liquid B. You can't see the parts in a heterogeneous mixture, but you can in a homogeneous mixture C.

F the solution described in the introduction is cooled to 0 ∘c, what mass of kno3 should crystallize?

11. You run 100 m in 25 s. If you then run the same distance in less time, does your aver - age speed increase or decrease? Explain.

In a zero order reaction, it takes 342 seconds for 75% of a hypothetical reactant to decompose. Determine the half-life t_{1/2} in units of seconds. Do not enter units with your numerical answer. Numeric Answer:

Choose one of the statements below that would best complete the following sentence. Carbenium ions are made by ... 1. adding protons to olefins. 2. abstracting protons from olefins. 3. adding hydride ions to naphthenes. 4.

Describe one main use for each fuel:coal, oil, and natural gas