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Breathing air that contains 4.0% by volume CO2 over time causes rapid breathing, throbbing headache, and nausea, among other symptoms.
a. What is the concentration of CO2 in such air in terms of mol percentage?
b. What is the concentration of CO2 in such air in terms of molarity, assuming 1 atm pressure, and a body temperature of 37 C?
Express your answers using two significant figures.
a 10.000-g sample of toothpaste containing stannous flouride gives a 0.145-g precipitate of stannous phosphate. What is the percentage of SnF2 in the toothpaste sample?
The following reaction is for solvolysis of t-butyl chloride. Show mechanism for the formation of the major and minor products. (CH3)3CCl + H2O--------(CH3)3COH+(CH3)2=CH2
draw the structures of the six diastereomers of the truxinic acids and the five diasteromers of the truxillic acids, clearly showing the photochemistry
A 184-mg sample of Na2CO3 is dissolved in H2O to give 3.00L of solution. What is the concentration of Na+ in parts per million (ppm)?
Then the potential of the mercury cathode was adjusted to -1.80 V vs. SCE, and the quantity of electricity passed during this second electrolysis was 64.17 cou- lombs. Calculate the weight percentages of CCl4 and CHCl3 in the original sample.
According to VSEPR theory, if there are five electron domains in the valence shell of an atom, what will be the expected electron domain geometry.
Explain why the H-H distances determined for coordinated dihydrogen by X-ray diffraction are always significantly shorter than
Assume that the wet limestone process requires 1 metric ton of calcium carbonate to remove + 85.0 % of the sulfur from 4 metric tons of coal containing + 10.0 % S Assume that the sulfur product is calcium sulfate.
Consider the reaction CaCN2 + 3H2O ->CaCO3 + 2NH3 . How much NH3 is produced if 187 g of CaCO3 are produced?
give full mechanism: show the reaction of ethyl propionate with sodium ethoxide followed by cold aqueous acid work up
Calculating percent purity from a reaction, One of the reactions that occurs in a blast furnace, where iron ore is converted to cast iron is Fe2O3 + CO = Fe + CO2.
In the concentration range of 500 to 2000 ppm of U, there is a linear relationship between absorbance at 351.5 nm and concentration. At lower concentrations the relationship is nonlinear unless about 2000 ppm of an alkali metal salt is introduced ..
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