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A hydrochloric acid solution is standardized using 0.500g of sodium carbonate, Na2CO3. Find the molarity of the acid if 29.50mL are required to reach a phenolphthalein endpoint.2 HCI(aq) + NaCO3(s) -right arrow 2 NaCl(aq) + H2O(I) + CO2 (g)
A 10.0 mL sample of household ammonia solution required 18.15 mL of 0.320 M HCI to reach neutralization. Calculate(a) the molar concentration of the ammonia and (b) the mass/mass % concentration of ammonia (17.04g/mol). given a solution density of 0.990 g/mLHCI (aq) + NH3(aq) -right arrow NH4Cl(aq
How will each of these changes affect the cell potential and why? a) Solid sodium hydroxide is added to the copper cell. b) 0.15 M iron (II) sulfate is added to the iron cell. c) Water is added to each cell so that the volume of each solution is d..
Fortunately, you can narrow the search because the PVC piping comes from unique vendors each with their unique degrees of polymerization. By detailed measurement, you determine that the PVC molecular non-extended (i.e., coiled) length is 7 nm. Wha..
Why the temperature of the DSC experiment settings need to be determined via TGA
How many grams of HCl are in a quart of muriatic acid? The muriatic acid density is 1.18 g/mL and is typically 36.5% HCl by mass.
draw,clearly showing the bonding between atoms, the simplest alkane molecule consisting of hydrogen and carbon, describe the molecule shape and bond angles.
When solid iodine is introduced into an evacuated vessel at 25 degrees Celcius, some of the iodine sublimes. Predict how the enthalpy, entropy, and free energy change in the system
At a pressure of 1 atmosphere and a temperature of 25 °C, 500 cm3 of the gas HX has a mass of 0.400 g. Calculate the value of the relative atomic mass of X and hence identify element X.
A mixture of CO(g) and O2 (g) in a 1 L container at 1000 K has a total pressure of 2.2 atm. After some time the total pressure falls to 1.9 atm as the result of the formation of the CO2(g). Find the mass in grams of the CO2 gas.
Calculate the values of E for the cell when the following volumes of the ce4+ titrant hav been added:(Activity coefficients may be ignored as they tend to cancel when calculating concentration ratios). 1.50 ml 20.0 ml 39.0 ml 40.0 ml 44.0 ml 80.0 ..
Determine the volume of the methane at STP if bacterial culture isolated from sewage produced 35.5 mL of methane, CH 4 , at the temperature of 31 degree Celsius and at pressure of 753 mmHg.
A sample of gas is made entirely of carbon dioxide and water, and there are 259 moles of carbon dioxide and 513 moles of water. If the total pressure of the sample is 21 atm, what is the partial pressure of each gas?
A 158-mg sample of Na2CO3 is dissolved in H2O to give 3.00L of solution. What is the concentration of Na+ in parts per million (ppm)?
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