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a steel sphere has a radius of 1.58in. If this steel sphere has a density of 7.88g/cm3, what is the mass of the sphere in grams?
4 C3H5O9N3(l) → 12 CO2(g) + 6 N2(g) + O2(g) + 10 H2O(g) If a sample containing 2.01 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
What mass of Aluminum is produced when 0.5 mole of Al2S3 is completely reduced with excess H2?
What is the concentration of a solution formed by diluting 25.0 mL of a 3.2 M NaCl solution to 135.0 mL.
A 1L flask is filled with 0.25 mol N2and 0.65 mol H2 at 20 oC. These gases react to make NH3, heating up the flask to a temperature of 45 oC.
Explain Threshold / NOEL Levels of Chemical Toxins, What is the maximum average daily consumption(g) of such fish that would keep exposure level below the ADI or RfD for the compound?
0.75g of hydrogen chloride is dissolved in water to make 2.5L of solution. What is the pH of the resulting hydrochloric acid solution.
Determine the mass of copper(II) sulfate, CuSO4 will remain after removing all the H2O(water) from 74 grams of CuSO4 5H2O (Also called Blue Vitriol and Bluestone)?
Determine the mole fraction of HO2CCH2CHOHCO2H in this solution?
If 18.4 mL of 0.800 M HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia?
Estrone is a female sex hormone that is known to contain 80.0% carbon, 8.2% hydrogen, and the remainder oxygen. If 793mL of estrone is found to have a mass of 4.97g at 0.90atm and 200oC, find the molecular formula for estrone.
If 20.0 dm3 of methane, CH4, react with 200.0 dm3 of air at STP, calculate the dm3 of carbon dioxide gas produced.
Determine how many moles each of Na+ and Cl- are in 0.700 L of the saline solution (A physiological saline solution contains 167 mEq/L each of Na+ and Cl-.)?
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