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In a periodic table the element hydrogen is occasionally grouped with the alkali metals and sometimes with the halogens. Define why hydrogen can resemble group 1A and group 7A elements
Consider a reservoir with a diameter of 450 m and a depth of 10 m. (a) how many liters of 0.10 M NaF should be added to produce 1.6 ppm F? (b) how many grams of solid NaF could be used instead of the solution used in part (a)
a 0.0125-g sample of a gas with an empirical formula of chf2 is placed in a 165-ml flask. it has a pressure of 13.7 mm
You are given an impure solid that contains 70% of the desired product. After extracting 15g of the material, you recover 6g of the pure compound. What is the percent recovery
How many grams of sodium lactate should be added to 1.00 L of 0.150 lactic acid ( or ) to form a buffer solution with = 4.10? Assume that no volume change occurs when the sodium lactate is added.
Calculate the mass of ferrous ammonium sulfate you would need to add to a 100.00 mL volumetric flask to make a solution that is 59 ppm in Fe. Then, stock solution A is prepared by dissolving 183.5 mg of ferrous ammonium sulfate in water and diluti..
Explain what are the concentrations of H3Cit, H2Cit-, and HCit2- in a sample of lemon juice that has a pH of 2.30 and a total concentration of the four citrate-containing species of .350 M? Presume that [Cit3-] is 0. Explain what is the concentrat..
Let x1 and x2 represent the mole fractions of 1-propanol and 2-propanol in a liquid mixture, respectively and y1 and y2 represent the mole fractions of each in the vapor phase. For a solution of these liquids with x1=.680, calculate the composition..
An element has two naturally occurring isotopes. Isotope 1 has a mass of 120.9038 amu and a relative abundance of 57.4%, and isotope 2 has a mass of 122.9042 amu.
What experimental difficulty would you encounter if you had neglected to include a drying step before evaporation
Pure liquid water can be supercooled to temperatures below its freezing point. Consider 10 kg of water cooled as a liquid to -10 Celsius. Let's now add a small crystal of ice (whose mass is negligible) as a "seed"
which of the following refers to the ground-state electron configuration of an atom? q options 1s12s1 kr5p1 ne3s13p2
When butane (C4H10) reacts with oxygen, ... carbon dioxide and water are produced. The balanced equation for this reaction is
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