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A 95.0 gram piece of ice at 0.0 degrees celcius is added to a sample of water at 8.0 degrees celcius. All of the ice melts and the temperature of the water decreases to 0.0 degrees celcius. HOw many Kg of water were in the sample?
Phosphorylation of a serine residue on the dual function enzyme PFK2/FBP2 switches it from a kinase active, phosphatase inactive form to a kinase inactive, phosphatase active form
the combining of the fragments which remain after the loss of an oxygen from the carboxylic acid and two hydrogens from ammonia or an amine.
a solution of aqueous sodium hydroxide (NaOH) was prepared as follows: 15.0g NaOH was dissolved in sufficient deionized H2O to yield 250ml of aqueous NaOH solution. what volume of the resulting NaOH solution contains 0.100 mol NaOH
Chemical reaction calculations, 1. Unbalanced equation SOCL2(1) + H2O(1) --- SO2(g) + HCl(g). How many molecules of H2O can 35.0 grams of thionyl chloride remove?
How many MOLECULES of phosphorus triiodide are present in 3.72 moles of this compound
How many copper atoms and how many zinc atoms are in the penny provided. You will have to do some research to help with this one
The concentrations of lead in blood samples are often reported in units of micromoles of lead per liter of blood. Calculate the value of the concentration in these units of a blood sample containing 45 ppb lead.
by solving this problemnbsp student understand about isotopic abundance and how to calculate atomic weight average
Calculate mass of the dye per liter Kool Aid solution C in units of grams/L, i got a molecular weight of the dye as 496.42g/mol a concentration of the dye as 1.26x10^-14 mol/L and a mass of Kool Aid of 0.566g
chlorine gas can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid. how much
in a sodium borohydride reduction experiment is the reaction exothermic or endothermic and why?
Name the complex ion present when the followng compounds are dissolved in water and determine the number of moles of each species present if one mole of the compound is dissolved
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