7.15g of Na2Co3.xH2O is dissolved in 250cm^3 of distilled water to form 0.10mol/dm^3.The entire solution was reacted with HCL to produce NaCl, H2O and 8960cm^3 of CO2 gas at stp in a beaker. Calculate 1.the contentration of Na2CO3.xH2O in g/dm^3
2.the molar mass of Na2CO3.xH2O

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?