What is the concentration expressed as %v/v
A urine sample contains 46.5mgL-1 of ethanol. The density of ethanol is 0.79gcm-3. What is the concentration expressed as %v/v.
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If we have a solution that contains 0.022 M Calcium and 0.014 Magnesium and we have to use potassium hydroxide to selectively precipitate one of the ions, while leaving the other ion in the solution.
If the usable energy in an 8.5 oz can were used to light a 100-watt (W) light bulb (1 W = 1 J⋅s), how many hours would the light bulb run from one can of these snacks?
Aqueous solutions of iron(III) chloride and sodium hydroxide are mixed together to form a combined solution that is 0.015 M FeCl3 and 0.010 M NaOH.
A compound contains 14.5 g of magnesium and 3.5 g of oxygen. What is the mass percent of oxygen in the compound?
How many ions will this compound create in aqueous solution ? What is the coordination number of chromium ?"
If 35.46 mL of 0.05961 M Cr2O72- is required to titrate 28.00 g of plasma, what is the mass percent of alcohol in the blood?
What is the final pressure in the container if 625 mL of helium gas at 105 mm Hg is compressed to 245 mL? Assume the temperature and the amount of gas are held constant.
Calculate the molality (m) of a 7.25 kg sample of a solution of the solute ethanol dissolved in the solvent water if the sample contains 53.2 mol of C2H5OH.
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