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Sodium borohydride reacts very slowly with ethanol to evolve a gas. Write a balanaced equation for this reaction.
Determine how would you compare the escape velocity of asteroid Y as compare to the escape velocity of asteroid X?
The concentration of potassium ions inside a nerve cell is around 20 to 30 times that outside the cell. Calculate the potential difference between inside and outside a nerve cell, if it depends only on this ionic imbalance.
A gas occupies a volume of 410 mL at 27oC and 740 mm Hg pressure. Calculate the volume the gas would occupy at STP.
Calculate the molar mass of an unknown solid (assume a non nonelectrolyte) if 1.35 grams of the solid was dissolved in 15.0 grams of dodecanol and caused a freezing point depression of 2.34 degrees Celsius.
despite its name, is at least mildly toxic. The properly balanced mixture reacts to form K2CO3, N2, H2O and CO2. Write the balanced reaction and determine the mass of kno3 that should be mixed with 1.4 g of sugar to produce optimally balanced rock..
What is the percent yield of a reaction in which 260. g phosphorus trichloride reacts with excess water to form aqueous phosphorus acid (H3PO3) and 127 g HCl?
For the diprotic weak acid H2A, Ka1 = 3.2 × 10-5 and Ka2 = 7.9 × 10-7. What is the pH of a 0.0400 M solution of H2A? What are the equilibrium concentrations of H2A and A2- in this solution
Calculate the percent yield of the reaction of 205 grams aluminum hydroxide with 751 grams hydrogen sulfate (sulfuric acid), given that 252 grams aluminum sulfate are produced
lead (II) sulfide (PbS) has a Ksp of 3.0 x 10^-28 . what is the concentration of lead (II) ions in a saturated solution of PbS
If 25 g of methanol (CH4O) are dissolved in 147mL of solution, what is the molarity of the solution
Calculate the percent yield of this organic reaction- C7H6O2------->C12H16O2. Molecular weight of C7H6O2 is 122.12 amount used 100g, Molecular weight of C12H16O2 192.25 amount recovered 125.9 g
When 34.1 g of lead reacts with 6.81 L of oxygen gas, measured at 1 atm and 25.0 degree C, 36.1 kJ of heat is released at consstant pressure. What is DeltaH for this reaction
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