Calculate the mass of ethylene glycol
Calculate the mass of C2H6O2 that must be added to 1.00 kg of ethanol, C2H5OH,to reduce its vapor pressure by 13.2 torr at 35 degree celsius. The vapor pressure of pure ethanol at 35 degree celsius is 100 torr.
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A person ate 0.941 pound of cheese (an energy intake of 7530 kJ). Suppose that none of the energy was stored in his body. What mass (in grams) of water would he need to perspire in order to maintain his original temperature? (It takes 44.0 kJ to v
Calculate ?H° for each of the following reactions using the data in Appendix 4: 4Na(s)+O2(g) ? 2Na2O(s) 2Na(s)+H20(l) ? 2NaOH(aq)+H2(g) 2Na(s)+CO2(g) ? Na2O(s)+CO(g) Explain why a water or carbon dioxide fire extinguisher may not be effective
If an excess of 2.45 M HCL is used with 12.75 g of sodium bicarbonate at 732 torr and 38 C, what volume of carbon dioxide is obtained?
Combustion of a .225g sample of a compound containing only carbon, hydgrogen and oxygen produces .306g water and .561g carbon dioxide. what is the empirical formula of the compound?
Given data:moles of H2=0.001mole , given weight of the unknown metal(M)=0.0757 g given equation:M(s)+nH30^+1........>M^(+n)+ (n/2) H2 + nH2O from the stoichiometry of the reaction and the number of moles of H2 given, Calculate the number of mol
What is the volume in mL of 0.664 M HCl(aq) needed to neutralize the hydroxide ions present in 32.2 mL of 0.851 M NaOH(aq).
A first-order reaction had a rate constant , k , of 0.0123 1/s. If the initial concentration of reactant is 1.25M , what will be the concentration of reactant after 10 minutes? show your work.
What is the pH of a solution made by adding 11.0 grams of NH4Cl to 550 mL of 0.205 M NaOH. (Assume no change in volume takes place.)
Florine is so reactive that it forms compound with material insert to other treatment when 0.448gm of plantinum is heated in florine, 0.71gm of dark red, volatile solid forms. What is emperical formula
At 20 degrees Celcius the equilibrium pressure of NH3 (g) is 62 Torr. Calculate the value of Kp for this equation and include the corresponding units.
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