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How many moles of NH4NO2 would be required to form 25 grams of N2 in the following reaction?
NH4NO2 ? N2 + 2 H2O
A compound contains 40.00% carbon, 6.67% hydrogen, and 53.33% oxygen. Determine the empirical formula of the compound. Give the chemical formula for calcium phosphate.
Explain briefly why CuSO4 is more soluble in water than in organic (nonpolar) solvent.
You have a sample that consists of 8.2 (+ or -)o.1mL of aqueous 239Pu solution. You measure two 10mL aliquots by liquid scintillation counting and get 3211.4 cpm and 3315.2 cpm, respectively.
Calculate the density of propanol C3H8O if you know that there are 1.069×10 25 molecules of propanol in 1.35 L.
Solid thorium(IV) fluoride has a boiling point of 1680°C.What is the density of a sample of gaseous thorium(IV) fluoride at its boiling point under a pressure of 2.5 atm in a 1.7 L container?
A 1.17 g sample of an alkane hydrocarbon gas occupies a volume of 674 mL at 28°C and 741 mmHg. Alkanes are known to have the general formula CnH2n+2.
A solution of potassium cyanide, KCN, instead of conc NH3 is added to copper(II) sulfate pentahydrate ([Cu(H2O4)]SO4.H20). Wrtie the formula of the expected complex ion.
Calculate the mass (g) of SrSO4 that will dissolve in 900 mL of 0.00253 M SrCl2 solution. The equation represents the solubility process.
Suppose a 5.00mL sample of vinegar required 27.58mL of 0.123 M sodium hydroxide to reach the endpoint. What is the molarity of acetic acid in the vinegar?
A balloon has a volume of 1.20 at 24.0 degrees Celsius. the balloon is heated to 48.0 degrees Celsius. calculate the new volume of the balloon.
How many calories of heat are necessary to raise the temperature of 350 ml of water from 1.00oC to 5.00oC.
Calcium carbonate and sand mixture with weight of 4 grams is reacted with excees of HCl results in the production of carbon dioxide then find out the percent of calcium carbonate in the original mixture?
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