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Question- Suppose that a student performed the experiment and calculations perfectly except the following. Unknown to the student, Cu(NO3)2 times 3H2O instead of CuSO4 times 5H2O was used to make up the known Cu+2 solution. Using his data the student found a percentage of copper in the brass samples of 50%. Would this percentage be correct? If so why? If not what is the correct percentage?
I require skilled aid to respond the specified problem
the solubility of kcl in h2o 34.0 g kcl100 g h20 at the temperature of twenty degree celsius. a solution warm having
Compound 8 has the formula C4H6Cl2O and is reacted with CH3OH to give compound 9. Compound 9 has the 1H NMR signals 2.1(quintet, .8), 2.5(triplet,.8), 3.6(triplet, .8), 3.7(singlet, 1.2). What is compound 9. What is compound 8. Draw structures and..
The flask is then rinsed with 64.6 mL of distilled water and is then used to prepare a standard solution of KNO3. Compute the molar concentration of Cl- in the standard KNO3 solution if the flask is rinsed only one time with distilled water.
Suppose you measured the product of PV of 1 mol of a dilute gas and found that PV= 27.54 L atm at 0.00 C and 37.32 L atm at 100 C.
Explain how you known. Use Lewis dot drawings as part of your explanation. Ag+ + 2NH3 --> [Ag(NH3)2]+
What mass of ethanol, CH3CH2OH, should be dissolved in 450. g of water to obtain a freezing point of 4.5°C?
The mixture had an observed specific rotation of +15.3 degrees. If it is known that the specific rotation of the R enantiomer is -30.8 degree, determine the percentage of each isomer in the mixture.
Sodium azide, a compound containing only sodium and nitrogen is used as a propellent for inflating airbags in some automobiles. A sample of sodium azide was weighed into a crucible
what conclusions can be reached about the relative strengths of Ni2+(aq) and/vs Cu2+(aq) as oxidizers? Also write the correct reaction.
What is the total number of joules absorbed by 65.0 g of water when the temperature of the water is raised from 25.0 degrees celsius to 40 degrees celsius?
What is the ratio of the rate of effusion of the most abundant gas, nitrogen, to the lightest gas, hydrogen
All particles in the mixture have a uniform spherical radius of 0.072 mm. a) Calculate the mass of a single particle of Na2SO4 and the number of Na2SO4 particles in the mixture.
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