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A molecule that contains only C, H, and Cl has peaks in its mass spectrum at masses 84,86, and 88. Only one isotope of carbon and hydrogen need to be considered here, but chlorine has two isotopes 35 Cl (75.5%) and 37 Cl (24.5%). What is the formula of this molecule? What are the relative areas of the three peaks in the mass spectrum of this molecule?
In a separatory funnel, which would be on top and which would be on the bottom; 10% NaOH and hexane
Model symmetry, Construct a model* in which a tetrahedral (sp 3) carbon atom (black) has four different model atoms attached to it. Use the light blue ball, red, blue
A 9-mm Xian short-barrel experimental pistol is fired and the reacting, exploding gases push the bullet down the barrel of the gun. The pressure is recorded as the bullet accelerates to the exit.
Halogens are added to alkenes with anti-stereochemistry through the halonium ion mechanism. However, when 1 phenylcyclohexe reacts with chlorine in CCl4, a mixture of cis and trans isomers of products is obtained. Outline a mechanism to explain th..
What percent of the hydrogen peroxide has been decomposed in mixture of (0.10M KI = 15.0mL, H2O= 35.0 mL and 3% hydrogen peroxide= 10.0 mL) when 20.0 mL of O2 gas has been evolved
For octane and ethanol, how many moles of liquid are there in the same 54L of volume?V= 54L , P=180 atm, T= 298 K
The reaction 2NO(g) + O2(g) 2NO2(g) is second order in NO as well as first order in O2. Explain when [NO] = 1 M and [O2] = 2.6 M, the observed rate of disappearance of NO is 0.00024180 M/s.
there are three compounds are given as i. pentane ii. 2-methylbutane iii. 23-dimethylbutane iv. 22-dimethylpropane
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
Assuming that the container is completely full, that the temperature is 20.7oC, and that the atmospheric pressure is 1.2atm, calculate the percent (by volume) of air that would be displaced if all of the liquid nitrogen evaporated
Find the temperature at which Kp = 4.00 for the reaction N2O4(g) 2NO2(g). [Given: at 25°C, for NO2(g), ?H°f = 33.85 kJ/mol, S° = 240.46 J/mol·K; for N2O4(g), ?H°f = 9.66 kJ/mol, S° = 304.3 J/mol·K; assume that ?H° and ?S° are independent of temp..
acetic acid has a ka of about 210-5. a buffer is to be prepared with a ph of 4.5 from 0.1m solutions of sodium acetate
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