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Calculate the mass of sodium required to produce 80 grams of sodium hydroxide by direct reaction with water: 2Na(s) + 2H2O(l) = 2NaOH(aq) +H2(g) (s) = solid, (l) = liquid, (aq) = water solution aqueous mixture and (g) = gasa. 33.2 grams Na
b. 46 grams Na
c. 58.4 grams Na
d. 78.94 grams Na
e. 84.8 grams Na
the vapor leaving the top of a distillation column goes to a condenser in which either total or partial condensation takes place.
Consider a solution formed by mixing 30.0 mL of 0.100 M H2SO4, 24.5 mL of 0.100 M HOCl, 25.0 mL of 0.200 M NaOH, 25.0 mL of 0.100 M Ca(OH)2, and 10.0 mL of 0.150 M KOH. Calculate the pH of this solution.
if 4.50 mole of ethane undergo combustion according to the unbalanced equation c2h6o2co2h2o how many moles of oxygen
A balloon has a volume of 1.75L at a temperature of 25°C. What will be the volume of the balloon if you take it out into the winter cold air at -15°C?
A woman had a heart attack caused by thrombus. the cells immediately downstream from the thrombus were deprived of oxygen and , as a result, increased
Hydrogen has two naturally occurring isotopes 1H (mass= 100783), and 2H (mass= 2.0140). If the atomic weight of hydrogen is given as 1.0079, which one is the more abundant isotope
Tartaric Acid is a diprotic acid with ka1=1.0*10^-3 and ka^2=4.6*10^-5. Calculate the concentration of tartarate ion, C4H4O62-, present in 0.015 M aqueous H2C4H4O6 soultion
For an ideal gas the pressure P, the volume V and the temperature T are related by the ideal gas equation of state, PV = nRT, where R is the general gas constant and n is the number of moles. Consider V as a function of T and P and show that dV is..
Calculate the maximum mass of Be(s) (in grams) that can be deposited from BeCl2(l) melt by a current of 5.0 A that flows for 1.0 hour
A solution is prepared by adding 5.00 grams of an unkown compound to 217 g of cyclohexane (C6H12). This solution freezes at 4.5 degree C.
Hydrocarbon mixtures are used as fuels. What mass of CO2 gas is produced by the combustion of 197.1 g of a mixture that is 62.5 % CH4 and 37.5% C3H8 by mass
Calculate kc for the reversible reaction and determine what is the activation energy
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