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A heavy flywheel, rotating initially at 1500 rpm is allowed to slow down to 1120 rpm in 10.2 minutes due to air and bearing friction. It is then brought to rest by the application of a brake which caused an angular deceleration of 1.15 rad/s2. Calculate
i) the total time in minutes and
ii) the total number of revolutions to come to rest from 1500 rpm
Imagine you preformed Sn2 reaction to form N-methyl benzyl ammonium bromide. The only impurity present in N-methyl benzyl ammonium bromide after the reaction is the benzyl bromide starting material
Determine which of the following reactions are oxidation-reduction reactions and which are not. what type of reaction do you have if it is not an oxidation-reduction reaction?
a) The name acetic anhydride implies that the compound will react with water to form acetic acid. Write the equation for the reaction. b) Write the equation for the reaction by which aspirin decomposes in an aqueous ethanol solution.
a proposed mechanism for the oxidation of nitrogen monoxide is given below along with relative rates of the elementary
Question- A voltaic cell is constructed that uses the following reaction and operates at 298 K. (Ered Ni+2 is -0.277) Zn(s) + Ni2+(aq) Zn2+(aq) + Ni(s) (a) What is the emf of this cell under standard conditions
Draw Lewis structures for the following molecules and label each with the appropriate geometry. CO, NH3, HNO3, H2O2, O3, C2H2, and C2H4
What mass of carbon dioxide was produced? Express your answer to three significant figures and include the appropriate units.
Estimate the value of the equilibrium constant at 610K for each of the following reactions. Delta Hf and S for BrCl is 14.6 kj/mol and 240.0 J/mol*K , respectively. Br2(g)+ Cl2(g) --> 2BrCl(g)
Question- For UV light of wavelength 254 nm, calculate the frequency and the amount of energy absorbed by a single molecule when it absorbs a quantum of this light. (Remember λυ=c, where c = 3.00 x 108m/s and E = hυ, where h = 6.63 x 10-34 J•s) 1n..
Explain the meanings of Vmax and Km. How do you get them from a graph of v vs. [S]. Draw a generic example and label appropriately. What are the differences between a competitive and non-competitive inhibition
A buffer is made by dissolving 0.037 mol of potassium fluoride in 135 mL of 0.0237M hydrofluoric acid. Assume no volume change when the salt is dissolved. Calculate the pH of the buffer.
Catalysts are substances that increase the rate of reaction but can be recovered unchanged at the end of the reaction. Catalysts can be classified as either homogeneous or heterogeneous
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