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The electron in the He+ ion is excited to the n = 2 principal state. What is the energy of the electron now?
what mass of carbon dioxide will be produced if 144g of carbon react with 384g of oxygen gas according to the equation C + O2 --> CO2
What is the Kb of C5H5N? The pH is 10.82 and the amount of C5N5N is 1.0X10^-3
How much heat is released when 4.50 g of methane gas is burned CH4 (g) + 2O2(g) -> CO2 (g) + 2H2O(l) H=-890kJ
The pressure on 200 ml of oxygen gas changes from 380 mm hg to 760 mm hg. The temperature does not change. What is the new volume of the oxygen gas?
Climbers sometimes develop Acute Mountain Sickness (AMS) when ascending too rapidly without allowing their bodies time to acclimate to the lower oxygen concentrations in air at high elevations.
If 5.36 103 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?
A 25.0 mL sample of .200 M HF is titrated with .200 M NaOH. What is the pH at the equivalence point?
How many moles of CF4 can be produced when 5.00 mol C react with 12.00 mol F2.
How many grams of aluminum hydroxide are obtained from 18.2g of aluminum sulfide?
Draw the product that is formed when 1-pentyne is treated with an excess of hydrogen gas and a nickel catalyst.
Cyclopropane contains 85.7%C and 14.3% H by mass. At 50C and .984 atm pressure, 1.56g cyclopropane has a volume of 1L. What is the molecular formula?
At 0.0C, if the volume of air is 1.8 mL and the pressure of the atmosphere that day is 665 mmHg, what is the number of moles of air?
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