A patient suffered myocardial infarction after being resuscitated, a ward nurse dissolved four 75mg aspirin (C9H8O4) tablet in 40cm3 drinking water and administered to the patient with the intention of reducing pain. Assuming complete dissolution of the aspirin in the water, express the concentration of the aspirin in: mg/ml , millimole / L , %w/v

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4

Which of the following units is not an official si unit

Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.