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What is the coordination number of each sphere in a three-dimensional, close-packed array of equal-sized spheres?
What is the minimum amount of 5.2 M H2SO4 necessary to produce 23.0 g of H2? according to the following reaction. 2Al(s)+3H2SO4(aq)-->Al2(SO4)3 (aq)+3H2(g)
Determine the initial quality and temperature of the fluid mixture prior to heating. [quality x1 = 0.182, T1 = 113.3°C] b) Determine the final volume of the steam after heating. [0.546 m3 (546 liters)] Note: 1000 liters - 1 m3
a 50.0 g sample of water is cooled from 30 degrees Celsius to 15 degrees Celsius losing 3140 J of heat What is the change in enthalpy.
what is the molar mass of gas if 0.250 g of the gas occupies 215 mL at 61 8mmHg and 30. 0C
When HSCN is added, you expect that the equilibrium will shift to the right and the reaction mixture will become darker (more orange).
Calculate the molar mass of a nonelectrolyte that lowers the freezing point of 25.00 g of water to -3.9 degrees Celsius when 4.27 g of the substance is dissolved in the water.
A steel cylinder with nitrogen, hydrogen, and ammonia gases is at 500°C and 4.91 atm. If the partial pressure of nitrogen is 1850 mmHg and hydrogen is 1150 mmHg
Calculate the mass (in mg) of KCN needed to make 500. mL of aqueous KCN solution with a pH of 10.00.
how many constitutionally isomeric monochlorides can be formed on free-radical chlorination
compare the number of valence electrons in an atom of oxygen, O , with the number of valence electrons in an atom of selenium in the same period or group.
Considering given equation as P4(s) + 5 O2(g) P4O10(s) where ΔH = -3013 kJ/mol you just need to compute the heat evolved when 436 grams of white Phosphorous (P4)burns in air according to the given equation as above.
Explain why the wild horse analogy can be used to help explain a certain type of chemical bonding
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