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What is chemical eqillibrium and state the factors that affect the chemical equllibriunm
How much energy would be required to melt 48 g of HCl at its melting point of -110.8C? Hfus for HCl is 14.2 cal/g and Hvap for HCl is 98.7 cal/g.
Consider the following balanced equation: 2 N2O5 → 4 NO2 + O2. If a 5.00 g sample of N2O5 undergoes this reaction, how many grams of O2 will also be formed?
Cyclopropane has significantly less angle strain than cyclopropane, yet is only slightly lower in energy. How can this be true? How does this information relate to the fact that cyclobutane is not a planar molecule
What is the energy released when 0.711 g are converted to energy? Express your answer in joules. For self-consistent units you must use kg because 1 J = 1 kg m2/s2.
A sealed vessel contains air at STP. It is heated to bring the air to a temperature of 80 °C. What will be the ratio of the mean free path of the air molecules at 80 °C to their mean free path at STP?
an alpha particle mass 6.6 x 10-24 g emitted by radium travels at 5.0 x 107 - 0.5 x 107 mihr.a. what is the de broglie
using henrys law calculate the molar concentration of rm o2 in the surface water of a mountain lake saturated with air
If the vapor pressure of ethyl ether and ethyl alcohol at 20°C are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20°C
which of the following atoms with the specified electronic configuration would have the lowest first ionization energy? (a) (He)2s^2 2p^3 (b) (ne) 3s^2 3p^4 (c) [Xe]6s^1 (d) [Xe]6s^2 4f^14 5d^10 6p^1
Combustion of 15.85 mg terephthalic acid produces 33.58 mg CO2and 5.16 mg H2O. If 0.250mol of terephthalic acid has a mass of 41.5 g, determine the molecular formula of terephthalic acid.
Measurements also show that a certain sample of the unknown compound contains 6.9 mol of oxygen and 2.32 of chromium
If a bottle of nail polish remover contains 176 of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788 .
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