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2 P(s) + 3 Cl2(g) ---> 2 PCl3(g) deltaH = -600 kJ
How much heat is released when 45.2 g of PCl3 are produced?
above the threshold frequency, what must be increased to increase the number of electrons ejected? What must be increased to increase the energy of the electrons ejected
The density of aluminum is 2.702 g/cm3. What is the final liquid level of water if 1.130 ounces (oz) of aluminum is dropped into a graduated cylinder containing
There are three possible arrangements of atoms and nonbonding pairs of electrons for the AB3N2 geometry. assuming that the effects of the relative strengths of different type of electron repulsions given in the background information
On hot days, you may have noticed that potato chip bags seem to inflate even thougt they have not been opened. if i have a 250 mL bag at a temperature of 19 C and i leave it in my car that has a temperature of 60 C, what will the new volume of the..
Starting from the left side of the periodic table, the melting and boiling points of the elements first increase, and then decrease
Which two electron configurations represent elements that would have similar chemical properties. (1) 1s22s22p4 (2) 1s22s22p5 (3) [Ar]4s23d104p3 (4) [Ar]4s23d104p4
What is the freezing point of a solution prepared from 50.0 g ethylene glycol (C2H6O2) and 85.0 g H2O? Kf of water is 1.86°C/m.
Assume you take a sample of 13.6 g Al and oxidize it (in an excess of O2) to produce 12.07 g of Al2O3. Calculate the percent yield of Al2O3. Reaction: 4 Al + 3 O2 → 2 Al2O3.
Explain why the extrapolated temperature is used to determine the maximum temperature of the mixture rather than the highest recorded temperature in the experiment.
A 2.60-L vessel contained 0.0160 mol of phosphorus trichloride, 0.0115 mol of phosphorus pentachloride, and 0.0903 mol of chlorine at 180°C in an equilibrium mixture. Calculate the value of Kc for the following reaction. PCl3(g) + Cl2(g) PCl5(g)
For a 6.70kg of magnesium-lead alloy, is it possible to have the masses of primary (alpha symbol) and total (alpha symbol) of 4.23kg and 6kg respectively at 460°C(860°F)
Explain the presence of carbon-carbon double bond in eugenol can be tested using bromine water test. State a balanced equation for the reaction involved in this test
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