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What is the percent yield if 0.856 g of NO is actually obtained in the lab during the following reaction: 4NH3 + 5O2 --> 4NO + 6H2O . 6.3 g of Ammonia was reacted with 1.8 g of Oxygen.
Which element emits photons of highest energy? Of lowest energy? When burned, a sample of an unknown substance is found to emit light of frequency . 6.59 X 1014 s-1 Which of these elements is probably in the sample?
Is there enough info to calculate the pressure of gas if the barometric pressure is 755 torr and if so what is the answer
You can purchase hydrochloric acid (HCl) in a concentrated form that is 37.0% by mass and has a density of 1.20 g/mL. What is the molarity of hydrochloric acid in this concentrated solution
Hypothesize as to the type of electrolyte the following solutions would be. Justify you answer from a chemical standpoint.
With the cobalt ion equilibrium- CoCl4^2- +6 H2O -> CO(H2O)6^2+ +4Cl-, what is the effect on the [CO(H2O)6^]2+ molarity when chloride is added. which species is of the cobalt complex will increase in concentration? what else increases
The atomic mass of chlorine is listened as 35.454 amu on the periodic table. It has two naturally occuring isotopes CL 35 and Cl 37. What are the approximate percentages.
A compound is constituted by mass of 52.1% carbon and 13.1% hydrogen, the rest being oxygen. Given that a volume of 5.33 L of this gas has a mass of 11.5 g at 13 °C and 110 kPa, find the molecular formula for this compound.
At a certain temperature the equilibrium pressure is .718 atm. Calculate Kp for the reaction
A graduated cylinder contains 148 of water. A 17.0 piece of iron (density = 7.86 ) and a 19.0 piece of lead are added. What is the new water level in the cylinder?
If you were to conduct an Orsat analysis of the flue gas, what would be the results? Assume diesel fuel to be dodecane C12H26
Calculate the solubility (in M units) of ammonia gas in water at 298 K and a partial pressure of 7.50bar . The Henry's law constant for ammonia gas at 298 K is 58.0 M atm and 1 bar = 0.9869 atm.
Without doing a calculation, which of the bonds below would you expect to have the higher stretching frequency. C-O or C=O
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