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List all the ionic species present (before any reaction occurs) when the following solutions are mixed together:
Ksub2COsub3(aq) and MgIsub2(aq)
Draw the product that is formed when 1-pentyne is treated with an excess of hydrogen gas and a nickel catalyst.
one hundred grams of water is saturated with NH4Cl at 50 degrees celcius. According to table G if the temperature is lowered to 10 degrees celcuis what is the total amount of NH4Cl that will precipitate.
The pH in the stomach of a certain animal is 3.8. This means that the hydrogen ion concentration in the stomach
calculate the mass of hydrogen gas that could have been produced. What would the gas volume be at room temperature and one atmosphere of pressure.
What is the change in the freezing point of a solution made by dissolving 14.7 g of C6H1206 into 150.0 ml of water? The density of water is 1.00 g/mL and Kf=1.86C/m.
Based upon 3 SnF2 (ag) + 2 K3PO4 (aq)> Sn3(PO4)s (s) + 6 KF (aq), a 10.000 gram sample of toothpaste containing stannous fluoride gives a 0.145 gram precipitate of stannous phosphate. What is the percentage of SnF2 in the toothpaste sample?
The electron in the He+ ion is excited to the n = 2 principal state. What is the energy of the electron now?
electrons and the quantity of electrons it has is the maximum. Calculate its mass number and a number that matches with the 34 neutrons it has.
a gas cylinder contains 40.0 L of gas at 45.0C and has a pressure of 650. torr. What will the pressure be if the temperature is changed to 100C?
Write the balanced molecular equation, the total ionic equation, and the net ionic equation
The enthalpy change for the reaction of hydrogen gas with flourine gas to produce hydrogen flouride is -542kJ fo the equation as written H2+F2=2HF deltaH=-542kJ
a reaction that contributes to the depletion of ozone in the stratosphere is the direct reaction O(g)+O3(g)-->2O2(g) at 298K the rate constant is 4.8*10^5M-1s-1 use delta H values from appendix C to estimate
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