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A 6.90-g sample of solid Ni(CN)2·4H2O was heated such that the water turned to steam and was driven off. Assuming ideal behavior, what volume would that steam occupy at 1.00 atm and 100.0 °C
What ions have a larger radius than their parent atom. What is the effect on atomic properties of increasing nuclear charge
What is the molecular geometry around a central atom that is sp3 hybridized and has one lone electron-pair? a.bent, b. linear, c.trigonal-planar
Why will the extraction of benzoic acid by NaHCO3 generate a greater pressure of gas in the separatory funnel than the extraction of t-butylphenol by NaOH
One a cold day a person takes a breath of 450 ml of air at a pressure of 745 mm Hg and room temperature of 21oC. What is the volume of this air in the lungs at 37oC and 758 mm Hg?
What is the speed of an electron ejected from a metallic surface, where the metal work function is 2.06 eV and the radiation is at the following wavelengths
What is the relative spread (in ppt) of the two values? (Note: ppt is part per thousand. Keep one decimal place in your answer.)
The molar heat capacities of iron and gold are 25.19 J/(mol c) and 25.41 j(mol c). what is the final temp of the water and the pieces of metal
Which compound has the smallest molar mass?
Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion.
2 n2g 3 o2g -gt 2 n2o3gat a certain temperature and pressure 4.2 l of n2 reacts with 6.3 l of o2. if all the n2 and o2
How many grams of sodium ion Na+ are in 2.50 g toothpaste. A toothpaste contains 0.24 by mass sodium fluoride used to prevent dental caries and 0.30 by mass triclosan , a preservative and antigingivitis agent
How many grams of Sodium Preoxide are needed to produce 3.20 grams of oxygen. How many grams of phosphoric acid are needed to produce 3.75 grams of calcium phosphate
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