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A 32.5-g cube of aluminum initially at 45.8 degree C is submerged in 105.3-g of water at 15.4 degree C. What is the final temperature of both substances at thermal equilibrium? (Assume that the aluminum and the water are thermally isolated from everything else.)
The structure of biphenyl and the numbering scheme used in naming its derivatives are indicated below. What is the major product obtained on dinitration of biphenyl (HNO3, H2SO4)
How many moles of B2O3 can theoretically be obtained from 4 moles of B5H9 and excess O2. How much B5H9 must be reacted with O2 to produce exactly 100 g of B2O3
Given that the density of the gas mixture =0.312 g/L at the pressure of 0.2 atm and temperature 500 Kelvin At equilibrium. Determine the value of Kc also express your answer in units of (mol/L)?
a certain monomer used in the production of polymers has one nitrogen atom and the mass composition 67.90 c 5.70 h and
A solution is prepared by adding 34.5 g of Ca(OH)2 and 15.l3g of KOH to 1500ml volumetric flask and adding water to the mark. What is [OH-],[H30+],[pH]
Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops from the n = 5 state to the n = 3 state
calculate the mass of propylene glycol rmc3 rmh8 rmo2 that must be added to 0.340 kg of water to reduce the vapor
a sunscreen preparation contains 2.50 by mass benzyl salicylate. if a tube contains 4.0 ounces of sunscreen how many
the sum exerts a gravitational force of 4.0 1028 n on the earth and the earth travels 9.4 1011 m in its yearly orbit
A paint company mixes it's paint with water to create more paint per gallon. They currently have ten gallon jugs which contain 10% water.
if 3.670g of nitrogen combines with 0.5275g of hydrogen to yield compound how many grams of nitrogen would combine
A student does an experiment to determine the molar solubility of lead(II) chloride. He constructs a voltaic cell at 298 K consisting of 0.864 M lead nitrate solution and a lead electrode in the cathode compartment,
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