Mailings Review View Help Equation X OK << 2 + V ! Ø F et NX...
Mailings Review View Help Equation X OK << 2 + V ! Ø F et NX IX {0} sin U % OF °C д v е 3 1 Bracket Function Ac Fraction Script Radical Integral Large Operator Symbols Structures 1 Some researchers used isotopes to determine the history of some sediments in lakes and estuaries, and to verify this method, the reference or standard PO208 substance known to have activity and capacity of 77.50 decomposed / minute was analysed, and their results were as they are in the following table: 77.09 75.37 72.42 76.84 77.84 78.03 74.96 77.54 76.09 81.12 A- Do the results of the researchers agree with the true value within the limits of confidence 90%? Explain your answer using the t-test with explanation. B- The value 81.12 appears odd compared to the rest of the other values. Explain whether it is approved or excluded in the calculations at 95% confidence limits? And why 2 A farmer wanted to check the quality of the fertilizer used on his farm, so he decided to examine a sample of fertilizer (the fertilizer mainly contains ammonium sulfate) to check the amount of sulfate present in it where he took a sample of fertilizer whose mass was 0.5179 for the purpose of testing, if he asked you to examine the sample, explain with explanation what is the mechanism and steps that can be followed in vitro to determine the amount of sulfate ion present in the EMP sample. 3 If you have the following solutions containing ions: Cro, 02-(Ksp=1.2x 10-12), Br" (ksp=5.0x 10-13),C" ksp=1.810-10), if a silver ion is added Ag+, Arrange the negative ions in ascending order according to the precipitation of the silver jon Focus hp or SC