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A 50.00-mL sample of groundwater is titrated with 0.0500 M EDTA. Assume that Ca2 accounts for all of the hardness in the groundwater. If 10.10 mL of EDTA is required to titrate the 50.00-mL sample, what is the hardness of the groundwater in molarity and in parts per million of CaCO3 by mass?
what is the total number of grams of patassium chloride needed to saturate exactlye 300 grams of water at 10 degrees celcius?
A sugar water mixture contains 45.8g of sugar and 108.5 g of water. What is the percent by mass of sugar and the percent by mass of water in the solution?
If the balloon rises to an altitude at which the temperature is -2.8°C and the pressure is 0.068 atm, what will the volume of the balloon be?
If 2.50L of 1.25M BaCl2 added to 3.50L of 2.45 M NaCl, what is molarity of Chloride ions in final solution
Find the average value of the electron-nucleus seperationin a hydrogen like atom in the 2pz (ml=0) state.
for the reaction P4+S8=P4S10 what is the maximum amount of P4S10 which could be formed from 17.02 g of P4 and .128 mol of S8?
What is the balanced reaction that occurs when copper metal dissolves in nitric acid
europium crystallizers in a body-centered cubic lattice (the Eu atom occupy only the lattice points).The densisty of Eu is 5.26 g/cm^3.calculate the unit cell edge length in pm
where b and R are constants. If the pressure and temperature are such that Vm = 10b, what is the numerical value of the compression factor?
What is the purpose of running both Dalton Vll mixed markers and lanes with individual markers on SDS-PAGE?
Consider the fusion of boron 10 with an alpha particle. The products of the fusion are carbon and a proton. a) Write a nuclear reaction for this process.
A common way to determine CEC of a soil is to saturate the CEC with NH4+ ions. If a soil holds 286mg
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