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Problem- An iron ore contains 38% Fe2O3 by mass. What is the maximum mass of iron that can be recovered from 13.6kg of this ore?
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The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would the molecular mass of the polypeptide equal
Calculate Ka and Original Concentration of Weak Base, You have a solution of a weak base, the pH of which is 10.7532. If 10.000 mL of this solution will neutralize 6.655 mL of 0.07667
D=(KBT)/6 xpie xr x n The HIV-1 virus has a radius of about 50 nm. The viscosity coefficient of water at 20 °C is 1.00 mPa·s. How far will a particle of HIV-1 typically travel in 1 minute
Oxygen is a common oxidizing agent in nature. What changes in the oxidation number of oxygen must occur if it is to be an oxidizing agent
Find the pH during the titration of 20.00 mL of 0.1000 M butanoic acid, CH3CH2CH2COOH (Ka = 1.54 x 10^-5), with 0.10 M NaOH solution after the following additions of titrant. a.) 15.00 mL b.) 20.90 mL c.) 27.00 mL
Calculate Delta mixG, Delta mixS, and Delta mixH for mixing 150.0 g of benzene with 200.0 g of toluene at 20 degree C and 1 atm.
The Party Guy, Mr. Balloon, is making animal figures out of long thin balloons that he twists into different shapes. Assume that the balloons are of uniform thickness.
A rectangular block of plastic, measuring 1.34 cm by 2.27 cm by 1.39 cm, floats in the middle of the Pacific Ocean. The volume of sea water displaced by the plastic block is 3.35 cm3. Assuming the density of the sea water is 1.025 g/mL, what is th..
State whether the following reactions are spontaneous or non spontaneous at low temperature, high temperature or all temperatures
If the pressure of a gas is 61.49 atm in a piston, what is the pressure, in atm, if the volume of the piston is increased by a factor of 4 at constant temperature
What is the structure of the alkane? The reaction of lithium di-sec-butylcuprate with isopenyl bromide yields?
a graduate cylinder contains water of 155 ml . a piece of iron of 15.0 g and density 7.86 cm3 and a piece of lead of
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