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Problem- 410/186 x. 410/183 z. 412/ 186 Q. 412/185 R. nuclear compositions 1) how many protons does atom X have? 2) How many neutrons does atom z have 3) How many electrons does atom R have 4) Which two atoms are isotopes
Using textbook reference solve the reactions given in above problem
Suppose that you titrate a 3 g sample of orange juice and it turns out to contain only 95.5mg of vitamin C. Further, it took 32.45mL of DCP solution to reach the end point of the titration.
The rainwater is mainly composed of NaCl 1 mM and its pH is 4.6. Without using a computer, determine the concentration of Ca2+in runoff water.
A sample of solid ammonium carbonate is heated in a closed container at 298 K and allowed to reach equilibrium. The total pressure of the system is 0.114 atm. Find out the value of Kp Recall Dalton's law
the ka for h2po41- is 6.3 x 10-8. the ka for hs1- is 1.3 x 10-13. both are amphoteric substances.a what does amphoteric
Write the balanced formula unit equation for the reaction of magnesium with hydrochloric acid. What is the sum of the coefficients? Don't forget coefficients of one
What region of the electromagentic spectrum does this belong to, the frequency of this energy and the energy in J/photon and kJ/mole?
The mole fraction of oxygen in air is .210. If the atmospheric pressure is .979 atm, what is the solubility of oxygen in air at 25.0 degrees C?
Problem- Write the balanced chemical equation and base-equilibrium expression (Kb) for the dissociation of NaC2H3O2 in water. Perform the necessary calculations to determine the expected pH of a 0.10 M solution of NaC2H3O2. Show your work.
If the boiling point of benzene is 81 degrees Celsius. Explain what is the vapor pressure of benzene at this temperature
Write a procedure that would follow to demonstrate the effect of increasingly higher concentrations of hydrochloric acid on its rate of reaction with antacid tablets. Can only use materials listed:
State chemical equations for the formation of the following Fischer esterification products- ethyl acetate, phenyl propanoate, benzyl acetate, isopentyl butanoate, methyl o-aminobenzoate.
How many moles of oxygen were used in the combustion of solid naphthalene, C 10 H 8 , if 51 kJ of energy were released to the surroundings
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