Computing the molarity of the ethanol
A solution of ethanol (C2H5OH) in water is prepared by dissolving 65.7 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?
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calculate the number of moles of gaseous N2 contained in a sample of 300 ml of gas saturated with water vapour at 25 degree celcius and 95 kPa.
Once released into the atmosphere, the SO2 is likely to react with oxygen to form SO3. What can happen next if the SO3 encounters water droplets?
If you used the 8900 kilojoules you expend in energy in one day to heat 51000 of water at 20, what would be the rise in temperature?
The stomach to give carbon dioxide, water and a soluble ionic salt. write a balanced equation for the reaction involving hydrotalcite and the hydrochloric acid.
Calculate the temperature of the gas in the tank when the pressure has reached 10.34 bar and if the valve does not fucntion properly and the pressure in the tank reaches 69 bar. for simplicity, consider the air to be an ideal gas with Cp=(7/2)R .
Density measurements can be used to analyze mixtures. For example, the density of solid sand (without air spaces) is about 2.84g/mL. The density of gold is 19.3 g/mL. If a 1.00kg sample of sand containing some gold has a density of 3.10g/mL(withou
If 0.176 moles of Mg have combined with 0.220 moles of O, what is the empirical formula of the product?
Use Microsoft Excel to compare costs from at least three different vendors and reasons to accept specific bids. Present your diagram of the mapping of the Local Area Network throughout the building using any medium that best enhances the prese
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