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An atomic emission spectrum of hydrogen shows the following three wavelengths: 1875nm, 1282nm, and 1093nm. Assign these wavelengths to transitions in the hydrogen atom.
For all three wavelengths there is four answers possible:
n = 4 -----> n = 3n = 5 -----> n = 3n = 6 -----> n = 3n = 7 -----> n = 3
caffeine is about 10 times as soluble in hot water as in cold water, a chemist puts hot water extract of caffeine in to an ice bath and some crystallizes. is the remaining solution saturated unsaturated or supersaturated and why?
Sodium nitrate decomposes upon heating to form sodium nitrite and oxygen gas. This reaction is sometimes used to produce small quantities of oxygen in the lab. How many grams of sodium nitrate must be heated to produce 128g of oxygen?
What is the probability that the particle is in the left quarter of the box for n=1?, n=2?, n=3?
undergoes a thermal decomposition reaction to form gold metal and oxygen gas. Write a balanced molecular equation that describes this reaction.
Calculate the pH of a buffer solution obtained by mixing 400.0 mL of 0.200 M acetic acid solution and 100.0 mL of a 0.300 M sodium hydroxide solution.(The pKa of Acitic Acid, CH3OOH is 4.74)
KMnO4-(aq) +HCl(aq)=Mn2+ (aq)+ Cl2(g) + K+ (aq) balance equation with half life method and what is the reducing agents?
During the preparation of a solution, a solute is dissolved in a volume of solvent smaller than the desired volume of solution. Subsequently, solvent is added until the final volume of solution is reached
How many moles of nitroglycerin and how many moles of gas(air, assume no nitroglycerin vapors present)were in the container originally?
Li is in row 2 of the periodic table, Na is in row 3, and K is in row 4. How do their row numbers affect how their electron configurations end.
KCN is dissolved in water in a calorimeter that has a total heat capacity of 3.850 kJ·K-1, the temperature decreases by 0.280 K. Calculate the molar heat of solution of KCN.
A particular brand of gasoline has a density of 0.737 g/mL. How many grams of this gasoline would fill a 14.4 gal tank?
Analysis of the products revealed two methylated sugars: 2,3,6-tri-O-methyl-D-glucose, 2,4-di-O-methyl-D-glucose and 2,3,4,6-tetra-O-methyl-D-glucose. The ratio of these sugars was 20:1:1. determine the structure of the polysaccharide?
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