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If a person of mass m=65.1 kg stands on a bicycle pedal at rest with a length L= 21.1 cm, what is the torque that the weight W of the person exerts on the pedal when it is an θ=74.0° above the horizontal? Express your answer in N m
A sample of the weak base hydroxylamine is titrated with 0.0900 M HCl. 30.0 mL is required to reach the endpoint. After the addition of 10.0 mL of titrant, the pH is 6.26. Calculate the pKb of hydroxylamine
A flask containins a mixture of He(g) and Ne(g). The total pressure of gas in the flask is 950 torr. The mixture is 65.0% Ne(g) by mass. What is the partial pressure of He(g) in the flask
When a rod of metallic lead was added to a 0.0100M solution of Co^+3, it was found that 68% of the cobalt in solution was reduced to Co^+2 by the lead. Find the value of K for Pb + 2Co^+3 = Pb^+2 + 2Co^+2
calculate the final concentration of a sodium hydroxide solution prepared by adding 10.00ml of 5.325m sodium hydroxide
What is the pH of a sodium hydroxide solution at 25oC in which the hydroxide ion concentration is 0.0026 mol/L? Is the solution acidic or basic?
In a lab you need 1.0M, 0.1M, and 0.05M Cu2+. How could you make 50.0mL of each of these three solutions with only 10.0g of Cu(NO3)2 available
When 25 mL of a 90 mL stock solution containing 2.15 M Pb(ClO3)2 is diluted to 33 mL, what is the concentration of ClO3- in the new solution
Calculate the actual flow rate of air (70% excess) including O2 and N2 flow rates - Propaen is completely burned and its conversion is 95 %. Determine the complement molar flow rates of the flue gases.
Calculate K for 2NO(g)+O2(g)=2NO2(g) from the observation that when equilibrium is established at 500K, there are 0.190 moles NO2, 2.65x10^-4 moles NO, and 0.606 moles O2 in a volume of 0.759 liters.
Question- Is it possible to prepare (S)-2-bromo-3-methylbutane in high yield by halogenations of an alkane? How many monohalo isomers are possible upon radical halogenations of the parent alkane. Consider stereoisomers as well.
A flask containing 5.00ml of 3M HCI solution requires 14.45 mL of 1.00M NaOH for titration. How many moles of HCI are present in the solution. The density of 3M HCI is1.05 g/mL
Balance the equations and indicate the type of reaction. CaO+ HCl -> CaCl2 +H2O. and also, Fe + O2 -> FE2O3
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