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now that you have determine the concentration of the base used to titrate the HCL in the pipette and you have recorded the volume of the HCL sample (5.oo mL) and the number of mL of base used you can calculate the concentraion of hcl solution.first calculate the number of moles of based used ( be careful about volume in units: moles based)=(Vbase)(Mbase) answer in mol base. 2. This is equal to the number of moles of HCL present in the 5.00mL of HCL delivered to the flask. CAlculate the molarity of the HCL.
How many moles of the nonelectrolyte, propylene glycol(C3H8O2) should be dissolved in 800.0g of water to prepare a solution whose freezing point is -3.73C? For water, Kfis 1.86C m-1 and Kb is 0.51C m-1.
An element has three naturally occurring isotopes with the following masses and abundances (in parenthesis): 27.977 amu (0.9222); 28.974 amu (0.0469); 29.974 amu (0.0310). Calculate the atomic weight of the element.
CaCN2 + 3H2O -> CaCO3 + 2NH3 . How much NH3 is produced if 187 g of CaCO3 are produced?
Given the following reaction: 2 O2 + CH4 CO2 + 2 H2O What mass of CH4 is required to completely react with 100 grams of oxygen.
A sample of nitrogen gas in a 4.4-L container at a temperature of 35°C exerts a pressure of 3.7 atm. Calculate the number of moles of gas in the sample.
A 2.89 g sample of solid calcium carbide (CaC2) reacted with water to produce acetylene gas (C2H2) and aqueous calcium hydroxide.
vinegar is a 5.0% solution by weight of acetic acid (CH3CO2H)in water. given that the ph for acetic acid is 2.41, the ka=1.8X10-5 and assuming the density of vinegar to be 1.00g/cm3, what is the percent dissociation for acetic acid in vinegar?
ammonia is completely decomposed to nitrogen and hydrogen, as in question B). At the end of the experiment the pressure of gas mixture is 866mmHg. calculate the partial pressures of N2 and H2.
Determine which species is present in the lowest concentration in 0.10 M H3A solution?
Calculate the wavelength of light that would be required to excite an electron from the HOMO to the LUMO. Hint: Recall that (triangle)E=hv=hc/lambda, and that 1 eV=1.602 x 10^-19 Joules.
Estimate the vapor pressure of water a solution containing 30 g of glucose per 500 g of water at 25C, given that the vapor pressure of pure water is 2.338 KPa at the same temperature.
A backpacker wants to carry enough fuel to heat 2.2 kg of water from 30 C degree to 100.0 C degree. If the fuel he carries produces 36 kJ of heat per gram when it burns
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