February 27, 2017

Search: chimistry

Number of results: 12

in chimistry what is aq
January 6, 2008 by katie

what distinguishes one element from another?
September 26, 2010 by ducky

what is the volume of .020 mol ne at .505kpa and 27.0'C
January 27, 2012 by edjucation

how many grams of CaCl2 are produced from 3.24 mol Cl2
February 18, 2010 by josue

lab chimistry
Why we must mix the compound with MnO4?
October 14, 2016 by Malek

hvorfor løsligheten av natriumsaltet til salsyre vann
September 10, 2016 by maria

The molar heat of fusion of lead (Pb) is 1.140 kcal/mol. How much heat must be added to 97.0 g of solid lead at its melting point in order for it to completely melt? A 1.44 kJ B 10.18 kJ C 12.48 kJ D 25.04 kJ
June 24, 2015 by joey

What is the solubility of calcium sulfate (CaSO4) in 0.30 M aqueous sodium sulfate (Na2SO4)? (Ksp of calcium sulfate = 2.0 10–5 M) 1.7 10–5 M 6.7 10–5 M 1.4 10–3 M 1.5 10–3 M
January 28, 2017 by ormond

A piece of metal (75 g at 98.0°C) was dropped in water (95 g at 22.0°C) and the final temperature was measured to be 31.2°C. If the specific heat of water is 4.18 J/g°C. What is the heat capacity of the metal?
May 18, 2015 by Mathew

A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.82 kg m-3. Under these conditions the total surface area of the balloon is 0.39 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012 by School girl

Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=3.591 A˚. What is the maximum wavelength (in meters) of radiation capable of...
November 18, 2012 by School girl

You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 100.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
December 14, 2012 by School girl

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