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It is given that the half-life of strontium-90 is twenty eight years. calculate How many grams of this nuclide in a sample of 4.00 g will remain after 112 years?
Write a balanced equation, showing charges for the titration of sodium hypochlorite.Procedure: 3ml of 1.0M KI,25ml distilled water, 10ml of (1:10) bleach solution, 2.0ml of 3M H2SO4. titrated with standardized Na2S2O3 (sodium thiosulfate solution). you just need to calculate concentration of NaClO solution from that equation.
Nitric oxide, oxygen, and nitrogen react by the following equation. 2 NO(g) N2(g) + O2(g)Kc = 2.3 10^30 at 298 K
Use the concentrations given below for the concentrated chemcal molarities and write out your calculations to obtain the volume of each stock solution needed to obtain 30.00 L of a 6.00 M
How can one draw a best fit straight line on a temperature versus time graph to determine the temperature at which two phases (solid plus melting point) appear
The concentrated sulfuric acid is 98.0 percent h2so4 by mass. the density of the solution is 1.83 g/ml. the molar mass of h2so4 is 98.08 g/ml.What is the mass of h2so4 in 100.0g of concentrated sulfuric acid solution?
When 3.00 g KNO3 are dissolved in 50 g glycerol, the freezing point changes from 17.8°C to 13.6°C. What is the freezing point depression constant (Kf ) for glycerol.
Calculate the volume of approximately 37 wt% HCl that should be added to 1 L of distilled water to produce 0.1 M HCl
Consider the following mechanism: NO => N + O O + O3 => 2 O2 O2 + N => NO2 What is the role of O3
what is the molarity of a solution made when you dilute 35 grams of sodium carbonate to a volume of 3400 ml?
Using the van der Waals equation, calculate the pressure of 59.5 g of NH3 in a 5.20 L container at 47°C. The van der Waals constants for NH3 are: a = 4.17 L2xatm/mol2, b = 0.0371 L/mol.
find the formula of a compound using stoichiometry and ideal gas equation.a quantity of 0.225 g of a metal m molar
A sample of 0.836 gm of unknown compound containing barium ions Ba2+ is dissolved in water and treated with an excess of Na2So4. If the mass of BaSo4 precipitat formed 0.7403 gm, what is the percent by mass of Ba in the orginal unknown compund
Adipic acid can be prepared by the oxidation cleaveage of the CC double bond of cyclohexne. If you require 12.5g of adipic acid what volume of cyclohexene
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